Vulnerability-Lookup

FKIE_CVE-2020-15049

Vulnerability from fkie_nvd - Published: 2020-06-30 18:15 - Updated: 2026-06-17 02:55

Severity

9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.

References

URL	Tags
cve@mitre.org	http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
cve@mitre.org	http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
cve@mitre.org	http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch	Patch, Vendor Advisory
cve@mitre.org	http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch	Patch, Vendor Advisory
cve@mitre.org	https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5	Third Party Advisory
cve@mitre.org	https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
cve@mitre.org	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
cve@mitre.org	https://security.netapp.com/advisory/ntap-20210312-0001/
cve@mitre.org	https://usn.ubuntu.com/4551-1/
cve@mitre.org	https://www.debian.org/security/2020/dsa-4732
af854a3a-2127-422b-91ae-364da2661108	http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
af854a3a-2127-422b-91ae-364da2661108	http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
af854a3a-2127-422b-91ae-364da2661108	http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch	Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch	Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
af854a3a-2127-422b-91ae-364da2661108	https://security.netapp.com/advisory/ntap-20210312-0001/
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/4551-1/
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2020/dsa-4732

Impacted products

Vendor	Product	Version
squid-cache	squid	*
squid-cache	squid	*
squid-cache	squid	*
squid-cache	squid	*
squid-cache	squid	2.7
squid-cache	squid	2.7
squid-cache	squid	2.7
squid-cache	squid	2.7
squid-cache	squid	2.7
squid-cache	squid	2.7
squid-cache	squid	2.7
squid-cache	squid	2.7
squid-cache	squid	2.7
fedoraproject	fedora	31

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "357FB8EB-55D7-40D8-918A-F8F2C1B6182A",
              "versionEndIncluding": "2.6",
              "versionStartIncluding": "2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E3828B8E-1FF7-4707-BB24-6C7CABC37362",
              "versionEndIncluding": "3.5.28",
              "versionStartIncluding": "3.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C3430B4A-4E1E-438D-9C84-4CFED6A3F023",
              "versionEndExcluding": "4.12",
              "versionStartIncluding": "4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "137B599B-80D1-4903-8791-40F11BC3FCD9",
              "versionEndExcluding": "5.0.3",
              "versionStartIncluding": "5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:squid-cache:squid:2.7:*:*:*:*:*:*:*",
              "matchCriteriaId": "35C30CB9-FA3A-408D-A8B0-8805E75657BE",
              "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:fedoraproject:fedora:31:*:*:*:*:*:*:*",
              "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing \"+\\ \"-\" or an uncommon shell whitespace character prefix to the length field-value."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 un problema en el archivo http/ContentLengthInterpreter.cc en Squid versiones anteriores a 4.12 y versiones 5.x anteriores a 5.0.3. Un ataque de Trafico No Autorizado de Peticiones y Envenenamiento puede tener \u00e9xito contra la memoria cach\u00e9 HTTP. El cliente env\u00eda una petici\u00f3n HTTP con un encabezado Content-Length que contiene \"+\\\"-\" o un prefijo del car\u00e1cter espacio en blanco de shell poco com\u00fan en el valor de campo de longitud"
    }
  ],
  "id": "CVE-2020-15049",
  "lastModified": "2026-06-17T02:55:57.853",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "cve@mitre.org",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-06-30T18:15:12.367",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://security.netapp.com/advisory/ntap-20210312-0001/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://usn.ubuntu.com/4551-1/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.debian.org/security/2020/dsa-4732"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.netapp.com/advisory/ntap-20210312-0001/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://usn.ubuntu.com/4551-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.debian.org/security/2020/dsa-4732"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2020-15049 (GCVE-0-2020-15049)

Vulnerability from cvelistv5 – Published: 2020-06-30 17:55 – Updated: 2024-08-04 13:08

Summary

Severity

9.9 (Critical)


                        
                          CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:N

CWE

Assigner

mitre mitre root

References

10 references

URL	Tags
http://www.squid-cache.org/Versions/v4/changesets…	x_refsource_MISC
http://www.squid-cache.org/Versions/v5/changesets…	x_refsource_MISC
https://github.com/squid-cache/squid/security/adv…	x_refsource_CONFIRM
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2020/dsa-4732	vendor-advisoryx_refsource_DEBIAN
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/4551-1/	vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://security.netapp.com/advisory/ntap-2021031…	x_refsource_CONFIRM

Date Public

2020-06-26 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:08:21.396Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://www.squid-cache.org/Versions/v4/changesets/squid-4-ea12a34d338b962707d5078d6d1fc7c6eb119a22.patch"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://www.squid-cache.org/Versions/v5/changesets/squid-5-485c9a7bb1bba88754e07ad0094647ea57a6eb8d.patch"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-qf3v-rc95-96j5"
          },
          {
            "name": "FEDORA-2020-cbebc5617e",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/"
          },
          {
            "name": "DSA-4732",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2020/dsa-4732"
          },
          {
            "name": "openSUSE-SU-2020:1346",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html"
          },
          {
            "name": "openSUSE-SU-2020:1369",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html"
          },
          {
            "name": "USN-4551-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4551-1/"
          },
          {
            "name": "[debian-lts-announce] 20201002 [SECURITY] [DLA 2394-1] squid3 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210312-0001/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2020-06-26T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing \"+\\ \"-\" or an uncommon shell whitespace character prefix to the length field-value."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.9,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-03-12T12:06:30.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

FKIE_CVE-2020-15049

CVE-2020-15049 (GCVE-0-2020-15049)

Tags

Sightings

Nomenclature

Related by attack behaviour