CVE-2019-12529 (GCVE-0-2019-12529)

Vulnerability from cvelistv5 – Published: 2019-07-11 18:33 – Updated: 2024-08-04 23:24
VLAI
Summary
An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2132 records in the last 180 days details
References
URL Tags
http://www.squid-cache.org/Versions/v4/changesets/ x_refsource_CONFIRM
https://github.com/squid-cache/squid/commits/v4 x_refsource_CONFIRM
http://www.squid-cache.org/Versions/v4/changesets… x_refsource_CONFIRM
https://usn.ubuntu.com/4065-1/ vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4065-2/ vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2019/dsa-4507 vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/Aug/42 mailing-listx_refsource_BUGTRAQ
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
Date Public
2019-06-19 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T23:24:38.470Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.squid-cache.org/Versions/v4/changesets/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/squid-cache/squid/commits/v4"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch"
          },
          {
            "name": "USN-4065-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4065-1/"
          },
          {
            "name": "[debian-lts-announce] 20190720 [SECURITY] [DLA 1858-1] squid3 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html"
          },
          {
            "name": "USN-4065-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4065-2/"
          },
          {
            "name": "FEDORA-2019-cb50bcc189",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/"
          },
          {
            "name": "DSA-4507",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2019/dsa-4507"
          },
          {
            "name": "20190825 [SECURITY] [DSA 4507-1] squid security update",
            "tags": [
              "mailing-list",
              "x_refsource_BUGTRAQ",
              "x_transferred"
            ],
            "url": "https://seclists.org/bugtraq/2019/Aug/42"
          },
          {
            "name": "openSUSE-SU-2019:2540",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html"
          },
          {
            "name": "openSUSE-SU-2019:2541",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html"
          },
          {
            "name": "[debian-lts-announce] 20200710 [SECURITY] [DLA 2278-1] squid3 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2019-06-19T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn\u0027t greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-07-10T23:06:10.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://www.squid-cache.org/Versions/v4/changesets/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/squid-cache/squid/commits/v4"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch"
        },
        {
          "name": "USN-4065-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4065-1/"
        },
        {
          "name": "[debian-lts-announce] 20190720 [SECURITY] [DLA 1858-1] squid3 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html"
        },
        {
          "name": "USN-4065-2",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4065-2/"
        },
        {
          "name": "FEDORA-2019-cb50bcc189",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/"
        },
        {
          "name": "DSA-4507",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2019/dsa-4507"
        },
        {
          "name": "20190825 [SECURITY] [DSA 4507-1] squid security update",
          "tags": [
            "mailing-list",
            "x_refsource_BUGTRAQ"
          ],
          "url": "https://seclists.org/bugtraq/2019/Aug/42"
        },
        {
          "name": "openSUSE-SU-2019:2540",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html"
        },
        {
          "name": "openSUSE-SU-2019:2541",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html"
        },
        {
          "name": "[debian-lts-announce] 20200710 [SECURITY] [DLA 2278-1] squid3 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-12529",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn\u0027t greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "http://www.squid-cache.org/Versions/v4/changesets/",
              "refsource": "CONFIRM",
              "url": "http://www.squid-cache.org/Versions/v4/changesets/"
            },
            {
              "name": "https://github.com/squid-cache/squid/commits/v4",
              "refsource": "CONFIRM",
              "url": "https://github.com/squid-cache/squid/commits/v4"
            },
            {
              "name": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch",
              "refsource": "CONFIRM",
              "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch"
            },
            {
              "name": "USN-4065-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4065-1/"
            },
            {
              "name": "[debian-lts-announce] 20190720 [SECURITY] [DLA 1858-1] squid3 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html"
            },
            {
              "name": "USN-4065-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4065-2/"
            },
            {
              "name": "FEDORA-2019-cb50bcc189",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/"
            },
            {
              "name": "DSA-4507",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2019/dsa-4507"
            },
            {
              "name": "20190825 [SECURITY] [DSA 4507-1] squid security update",
              "refsource": "BUGTRAQ",
              "url": "https://seclists.org/bugtraq/2019/Aug/42"
            },
            {
              "name": "openSUSE-SU-2019:2540",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html"
            },
            {
              "name": "openSUSE-SU-2019:2541",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html"
            },
            {
              "name": "[debian-lts-announce] 20200710 [SECURITY] [DLA 2278-1] squid3 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-12529",
    "datePublished": "2019-07-11T18:33:55.000Z",
    "dateReserved": "2019-06-02T00:00:00.000Z",
    "dateUpdated": "2024-08-04T23:24:38.470Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2019-12529",
      "date": "2026-11-15",
      "epss": "0.0778",
      "percentile": "0.94743"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "2E2C5F7C-FADE-4A8C-8A7D-7597874B6C9A",
                  "versionEndExcluding": "2.7",
                  "versionStartIncluding": "2.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "FC9F2659-B37B-4E7B-AE40-B91BF3CE4E88",
                  "versionEndIncluding": "3.5.28",
                  "versionStartIncluding": "3.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "61861774-A71F-48CB-B6B2-0489C57E4E66",
                  "versionEndIncluding": "4.7",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable1:*:*:*:*:*:*",
                  "matchCriteriaId": "01930746-6E15-445F-BD30-C4E83FA9AE25",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable2:*:*:*:*:*:*",
                  "matchCriteriaId": "EFBB466C-C679-4B4B-87C2-E7853E5B3F04",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*",
                  "matchCriteriaId": "A03692DD-779F-4E3C-861C-29943870A816",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*",
                  "matchCriteriaId": "79FF6B3C-A3CE-4AA2-80F9-44D05A6B2F08",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable5:*:*:*:*:*:*",
                  "matchCriteriaId": "3CF6E367-D33B-4B60-8C40-4618C47D53E8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable6:*:*:*:*:*:*",
                  "matchCriteriaId": "0FA1F4FE-629C-4489-A13C-017A824C840F",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable7:*:*:*:*:*:*",
                  "matchCriteriaId": "2479C5BF-94E1-4153-9FA3-333BC00F01D6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable8:*:*:*:*:*:*",
                  "matchCriteriaId": "8ABFCCCC-7584-466E-97CC-6EBD3934A70E",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable9:*:*:*:*:*:*",
                  "matchCriteriaId": "F17E49BF-FB11-4EE6-B6AC-30914F381B2F",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*",
                  "matchCriteriaId": "D100F7CE-FC64-4CC6-852A-6136D72DA419",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*",
                  "matchCriteriaId": "F1E78106-58E6-4D59-990F-75DA575BFAD9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
                  "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*",
                  "matchCriteriaId": "CB66DB75-2B16-4EBF-9B93-CE49D8086E41",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
                  "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                  "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*",
                  "matchCriteriaId": "CD783B0C-9246-47D9-A937-6144FE8BFF0F",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn\u0027t greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages."
        },
        {
          "lang": "es",
          "value": "Se detect\u00f3 un problema en Squid versiones 2.x hasta 2.7.STABLE9, versiones 3.x hasta 3.5.28 y versiones 4.x hasta 4.7. Cuando Squid se configura para utilizar la autenticaci\u00f3n b\u00e1sica, el encabezado Proxy-Authorization se analiza por medio de uudecode. uudecode determina cu\u00e1ntos bytes se descodificar\u00e1n mediante la iteraci\u00f3n sobre la entrada y comprobando su tabla. A continuaci\u00f3n, la longitud se utiliza para empezar a decodificar la cadena. No hay comprobaciones para asegurarse de que la longitud que calcula no es mayor que el b\u00fafer de entrada. Esto conlleva a que la memoria adyacente esta siendo decodificada tambi\u00e9n. Un atacante no podr\u00eda recuperar los datos descodificados a menos que el mantenedor de Squid haya configurado la visualizaci\u00f3n de nombres de usuario en las p\u00e1ginas de error."
        }
      ],
      "id": "CVE-2019-12529",
      "lastModified": "2024-11-21T04:23:02.987",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "MEDIUM",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "NONE",
              "baseScore": 4.3,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "NONE",
              "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
              "version": "2.0"
            },
            "exploitabilityScore": 8.6,
            "impactScore": 2.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV31": [
          {
            "cvssData": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.9,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            },
            "exploitabilityScore": 2.2,
            "impactScore": 3.6,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2019-07-11T19:15:13.157",
      "references": [
        {
          "source": "cve@mitre.org",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://www.squid-cache.org/Versions/v4/changesets/"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://github.com/squid-cache/squid/commits/v4"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "https://seclists.org/bugtraq/2019/Aug/42"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://usn.ubuntu.com/4065-1/"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://usn.ubuntu.com/4065-2/"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://www.debian.org/security/2019/dsa-4507"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://www.squid-cache.org/Versions/v4/changesets/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://github.com/squid-cache/squid/commits/v4"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Mailing List",
            "Third Party Advisory"
          ],
          "url": "https://seclists.org/bugtraq/2019/Aug/42"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://usn.ubuntu.com/4065-1/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://usn.ubuntu.com/4065-2/"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Third Party Advisory"
          ],
          "url": "https://www.debian.org/security/2019/dsa-4507"
        }
      ],
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-125"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2E2C5F7C-FADE-4A8C-8A7D-7597874B6C9A",
                    "versionEndExcluding": "2.7",
                    "versionStartIncluding": "2.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FC9F2659-B37B-4E7B-AE40-B91BF3CE4E88",
                    "versionEndIncluding": "3.5.28",
                    "versionStartIncluding": "3.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "61861774-A71F-48CB-B6B2-0489C57E4E66",
                    "versionEndIncluding": "4.7",
                    "versionStartIncluding": "4.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable1:*:*:*:*:*:*",
                    "matchCriteriaId": "01930746-6E15-445F-BD30-C4E83FA9AE25",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable2:*:*:*:*:*:*",
                    "matchCriteriaId": "EFBB466C-C679-4B4B-87C2-E7853E5B3F04",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*",
                    "matchCriteriaId": "A03692DD-779F-4E3C-861C-29943870A816",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*",
                    "matchCriteriaId": "79FF6B3C-A3CE-4AA2-80F9-44D05A6B2F08",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable5:*:*:*:*:*:*",
                    "matchCriteriaId": "3CF6E367-D33B-4B60-8C40-4618C47D53E8",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable6:*:*:*:*:*:*",
                    "matchCriteriaId": "0FA1F4FE-629C-4489-A13C-017A824C840F",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable7:*:*:*:*:*:*",
                    "matchCriteriaId": "2479C5BF-94E1-4153-9FA3-333BC00F01D6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable8:*:*:*:*:*:*",
                    "matchCriteriaId": "8ABFCCCC-7584-466E-97CC-6EBD3934A70E",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:squid-cache:squid:2.7:stable9:*:*:*:*:*:*",
                    "matchCriteriaId": "F17E49BF-FB11-4EE6-B6AC-30914F381B2F",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D100F7CE-FC64-4CC6-852A-6136D72DA419",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F1E78106-58E6-4D59-990F-75DA575BFAD9",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*",
                    "matchCriteriaId": "CB66DB75-2B16-4EBF-9B93-CE49D8086E41",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
                    "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                    "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CD783B0C-9246-47D9-A937-6144FE8BFF0F",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn\u0027t greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages."
          },
          {
            "lang": "es",
            "value": "Se detect\u00f3 un problema en Squid versiones 2.x hasta 2.7.STABLE9, versiones 3.x hasta 3.5.28 y versiones 4.x hasta 4.7. Cuando Squid se configura para utilizar la autenticaci\u00f3n b\u00e1sica, el encabezado Proxy-Authorization se analiza por medio de uudecode. uudecode determina cu\u00e1ntos bytes se descodificar\u00e1n mediante la iteraci\u00f3n sobre la entrada y comprobando su tabla. A continuaci\u00f3n, la longitud se utiliza para empezar a decodificar la cadena. No hay comprobaciones para asegurarse de que la longitud que calcula no es mayor que el b\u00fafer de entrada. Esto conlleva a que la memoria adyacente esta siendo decodificada tambi\u00e9n. Un atacante no podr\u00eda recuperar los datos descodificados a menos que el mantenedor de Squid haya configurado la visualizaci\u00f3n de nombres de usuario en las p\u00e1ginas de error."
          }
        ],
        "id": "CVE-2019-12529",
        "lastModified": "2024-11-21T04:23:02.987",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2019-07-11T19:15:13.157",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://www.squid-cache.org/Versions/v4/changesets/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/squid-cache/squid/commits/v4"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://seclists.org/bugtraq/2019/Aug/42"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://usn.ubuntu.com/4065-1/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://usn.ubuntu.com/4065-2/"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2019/dsa-4507"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://www.squid-cache.org/Versions/v4/changesets/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-dd46b5417809647f561d8a5e0e74c3aacd235258.patch"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/squid-cache/squid/commits/v4"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2019/07/msg00018.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Mailing List",
              "Third Party Advisory"
            ],
            "url": "https://seclists.org/bugtraq/2019/Aug/42"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://usn.ubuntu.com/4065-1/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://usn.ubuntu.com/4065-2/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2019/dsa-4507"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-07T04:51:52+00:00",
      "cve": "CVE-2019-12529",
      "id": "CVE-2019-12529",
      "initial_release_date": "2019-07-11T00:00:00+00:00",
      "product_status:fixed": "30",
      "product_status:known_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "squid: Out of bounds read in Proxy-Authorization header causes DoS",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-12529.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-22T17:01:34Z",
      "cve": "CVE-2019-12529",
      "id": "CVE-2019-12529",
      "initial_release_date": "2023-02-15T04:11:28Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "91",
      "product_status:recommended": "76",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-12529",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2019-12529.json",
      "version": "42"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.