CVE-2010-4020 (GCVE-0-2010-4020)

Vulnerability from cvelistv5 – Published: 2010-12-02 16:00 – Updated: 2024-08-07 03:26
VLAI
Summary
MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.
Severity
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 29/100 over 2175 records in the last 180 days details
References
URL Tags
http://www.vupen.com/english/advisories/2010/3094 vdb-entryx_refsource_VUPEN
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://kb.vmware.com/kb/1035108 x_refsource_CONFIRM
http://www.vupen.com/english/advisories/2010/3118 vdb-entryx_refsource_VUPEN
http://www.securityfocus.com/archive/1/514953/100… mailing-listx_refsource_BUGTRAQ
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.vmware.com/security/advisories/VMSA-20… x_refsource_CONFIRM
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://web.mit.edu/kerberos/advisories/MITKRB5-SA… x_refsource_CONFIRM
http://www.vupen.com/english/advisories/2010/3095 vdb-entryx_refsource_VUPEN
http://secunia.com/advisories/42399 third-party-advisoryx_refsource_SECUNIA
http://lists.vmware.com/pipermail/security-announ… mailing-listx_refsource_MLIST
http://www.securitytracker.com/id?1024803 vdb-entryx_refsource_SECTRACK
http://www.securityfocus.com/archive/1/517739/100… mailing-listx_refsource_BUGTRAQ
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://www.redhat.com/support/errata/RHSA-2010-09… vendor-advisoryx_refsource_REDHAT
http://www.ubuntu.com/usn/USN-1030-1 vendor-advisoryx_refsource_UBUNTU
http://osvdb.org/69608 vdb-entryx_refsource_OSVDB
http://www.securityfocus.com/bid/45117 vdb-entryx_refsource_BID
http://support.apple.com/kb/HT4581 x_refsource_CONFIRM
Date Public
2010-11-30 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-07T03:26:12.249Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "ADV-2010-3094",
            "tags": [
              "vdb-entry",
              "x_refsource_VUPEN",
              "x_transferred"
            ],
            "url": "http://www.vupen.com/english/advisories/2010/3094"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"
          },
          {
            "name": "MDVSA-2010:246",
            "tags": [
              "vendor-advisory",
              "x_refsource_MANDRIVA",
              "x_transferred"
            ],
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
          },
          {
            "name": "FEDORA-2010-18425",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://kb.vmware.com/kb/1035108"
          },
          {
            "name": "ADV-2010-3118",
            "tags": [
              "vdb-entry",
              "x_refsource_VUPEN",
              "x_transferred"
            ],
            "url": "http://www.vupen.com/english/advisories/2010/3118"
          },
          {
            "name": "20101130 MITKRB5-SA-2010-007 Multiple checksum handling vulnerabilities [CVE-2010-1324 CVE-2010-1323 CVE-2010-4020 CVE-2010-4021]",
            "tags": [
              "mailing-list",
              "x_refsource_BUGTRAQ",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded"
          },
          {
            "name": "SUSE-SR:2010:023",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
          },
          {
            "name": "APPLE-SA-2011-03-21-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_APPLE",
              "x_transferred"
            ],
            "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
          },
          {
            "name": "ADV-2010-3095",
            "tags": [
              "vdb-entry",
              "x_refsource_VUPEN",
              "x_transferred"
            ],
            "url": "http://www.vupen.com/english/advisories/2010/3095"
          },
          {
            "name": "42399",
            "tags": [
              "third-party-advisory",
              "x_refsource_SECUNIA",
              "x_transferred"
            ],
            "url": "http://secunia.com/advisories/42399"
          },
          {
            "name": "[security-announce] 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
          },
          {
            "name": "1024803",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id?1024803"
          },
          {
            "name": "20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console",
            "tags": [
              "mailing-list",
              "x_refsource_BUGTRAQ",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded"
          },
          {
            "name": "FEDORA-2010-18409",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html"
          },
          {
            "name": "SUSE-SR:2010:024",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
          },
          {
            "name": "RHSA-2010:0925",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html"
          },
          {
            "name": "USN-1030-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "http://www.ubuntu.com/usn/USN-1030-1"
          },
          {
            "name": "69608",
            "tags": [
              "vdb-entry",
              "x_refsource_OSVDB",
              "x_transferred"
            ],
            "url": "http://osvdb.org/69608"
          },
          {
            "name": "45117",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/45117"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://support.apple.com/kb/HT4581"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2010-11-30T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-10-10T18:57:01.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "ADV-2010-3094",
          "tags": [
            "vdb-entry",
            "x_refsource_VUPEN"
          ],
          "url": "http://www.vupen.com/english/advisories/2010/3094"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"
        },
        {
          "name": "MDVSA-2010:246",
          "tags": [
            "vendor-advisory",
            "x_refsource_MANDRIVA"
          ],
          "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
        },
        {
          "name": "FEDORA-2010-18425",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://kb.vmware.com/kb/1035108"
        },
        {
          "name": "ADV-2010-3118",
          "tags": [
            "vdb-entry",
            "x_refsource_VUPEN"
          ],
          "url": "http://www.vupen.com/english/advisories/2010/3118"
        },
        {
          "name": "20101130 MITKRB5-SA-2010-007 Multiple checksum handling vulnerabilities [CVE-2010-1324 CVE-2010-1323 CVE-2010-4020 CVE-2010-4021]",
          "tags": [
            "mailing-list",
            "x_refsource_BUGTRAQ"
          ],
          "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded"
        },
        {
          "name": "SUSE-SR:2010:023",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
        },
        {
          "name": "APPLE-SA-2011-03-21-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_APPLE"
          ],
          "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
        },
        {
          "name": "ADV-2010-3095",
          "tags": [
            "vdb-entry",
            "x_refsource_VUPEN"
          ],
          "url": "http://www.vupen.com/english/advisories/2010/3095"
        },
        {
          "name": "42399",
          "tags": [
            "third-party-advisory",
            "x_refsource_SECUNIA"
          ],
          "url": "http://secunia.com/advisories/42399"
        },
        {
          "name": "[security-announce] 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
        },
        {
          "name": "1024803",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id?1024803"
        },
        {
          "name": "20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console",
          "tags": [
            "mailing-list",
            "x_refsource_BUGTRAQ"
          ],
          "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded"
        },
        {
          "name": "FEDORA-2010-18409",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html"
        },
        {
          "name": "SUSE-SR:2010:024",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
        },
        {
          "name": "RHSA-2010:0925",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html"
        },
        {
          "name": "USN-1030-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "http://www.ubuntu.com/usn/USN-1030-1"
        },
        {
          "name": "69608",
          "tags": [
            "vdb-entry",
            "x_refsource_OSVDB"
          ],
          "url": "http://osvdb.org/69608"
        },
        {
          "name": "45117",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/45117"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://support.apple.com/kb/HT4581"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2010-4020",
          "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": "MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "ADV-2010-3094",
              "refsource": "VUPEN",
              "url": "http://www.vupen.com/english/advisories/2010/3094"
            },
            {
              "name": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html",
              "refsource": "CONFIRM",
              "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"
            },
            {
              "name": "MDVSA-2010:246",
              "refsource": "MANDRIVA",
              "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
            },
            {
              "name": "FEDORA-2010-18425",
              "refsource": "FEDORA",
              "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html"
            },
            {
              "name": "http://kb.vmware.com/kb/1035108",
              "refsource": "CONFIRM",
              "url": "http://kb.vmware.com/kb/1035108"
            },
            {
              "name": "ADV-2010-3118",
              "refsource": "VUPEN",
              "url": "http://www.vupen.com/english/advisories/2010/3118"
            },
            {
              "name": "20101130 MITKRB5-SA-2010-007 Multiple checksum handling vulnerabilities [CVE-2010-1324 CVE-2010-1323 CVE-2010-4020 CVE-2010-4021]",
              "refsource": "BUGTRAQ",
              "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded"
            },
            {
              "name": "SUSE-SR:2010:023",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
            },
            {
              "name": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html",
              "refsource": "CONFIRM",
              "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
            },
            {
              "name": "APPLE-SA-2011-03-21-1",
              "refsource": "APPLE",
              "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html"
            },
            {
              "name": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt",
              "refsource": "CONFIRM",
              "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
            },
            {
              "name": "ADV-2010-3095",
              "refsource": "VUPEN",
              "url": "http://www.vupen.com/english/advisories/2010/3095"
            },
            {
              "name": "42399",
              "refsource": "SECUNIA",
              "url": "http://secunia.com/advisories/42399"
            },
            {
              "name": "[security-announce] 20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console",
              "refsource": "MLIST",
              "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
            },
            {
              "name": "1024803",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id?1024803"
            },
            {
              "name": "20110428 VMSA-2011-0007 VMware ESXi and ESX Denial of Service and third party updates for Likewise components and ESX Service Console",
              "refsource": "BUGTRAQ",
              "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded"
            },
            {
              "name": "FEDORA-2010-18409",
              "refsource": "FEDORA",
              "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html"
            },
            {
              "name": "SUSE-SR:2010:024",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
            },
            {
              "name": "RHSA-2010:0925",
              "refsource": "REDHAT",
              "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html"
            },
            {
              "name": "USN-1030-1",
              "refsource": "UBUNTU",
              "url": "http://www.ubuntu.com/usn/USN-1030-1"
            },
            {
              "name": "69608",
              "refsource": "OSVDB",
              "url": "http://osvdb.org/69608"
            },
            {
              "name": "45117",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/45117"
            },
            {
              "name": "http://support.apple.com/kb/HT4581",
              "refsource": "CONFIRM",
              "url": "http://support.apple.com/kb/HT4581"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2010-4020",
    "datePublished": "2010-12-02T16:00:00.000Z",
    "dateReserved": "2010-10-20T00:00:00.000Z",
    "dateUpdated": "2024-08-07T03:26:12.249Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2010-4020",
      "date": "2026-11-08",
      "epss": "0.01916",
      "percentile": "0.79994"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*",
                  "matchCriteriaId": "36823B2B-5C72-4FF3-9301-FB263EB8CE09",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*",
                  "matchCriteriaId": "59AFA33E-FEBC-45F5-9EC6-8AA363163FB5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*",
                  "matchCriteriaId": "04D83332-B2FD-4E86-A76C-C3F1CD3B3A31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*",
                  "matchCriteriaId": "758A0011-20ED-414A-9DF3-50A161DF8BC2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations."
        },
        {
          "lang": "es",
          "value": "MIT Kerberos 5 (tambi\u00e9n conocido como krb5) v1.8.x hasta v1.8.3 no rechaza las sumas de comprobaci\u00f3n RC4 (clave de derivaci\u00f3n), lo que podr\u00eda permitir a usuarios remotos autenticados falsificar un (1) AD-SIGNEDPATH o (2) la firma AD-KDC-ISSUED, y posiblemente obtener privilegios, aprovechando el espacio de claves peque\u00f1as que resultan de ciertas operaciones de cifrado de flujo de un byte (one-byte)."
        }
      ],
      "id": "CVE-2010-4020",
      "lastModified": "2024-11-21T01:20:04.537",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": false,
            "baseSeverity": "LOW",
            "cvssData": {
              "accessComplexity": "MEDIUM",
              "accessVector": "NETWORK",
              "authentication": "SINGLE",
              "availabilityImpact": "NONE",
              "baseScore": 3.5,
              "confidentialityImpact": "NONE",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
              "version": "2.0"
            },
            "exploitabilityScore": 6.8,
            "impactScore": 2.9,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV30": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 6.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
              "version": "3.0"
            },
            "exploitabilityScore": 2.8,
            "impactScore": 3.4,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2010-12-02T16:22:21.207",
      "references": [
        {
          "source": "cve@mitre.org",
          "url": "http://kb.vmware.com/kb/1035108"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://osvdb.org/69608"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://secunia.com/advisories/42399"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://support.apple.com/kb/HT4581"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.securityfocus.com/bid/45117"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.securitytracker.com/id?1024803"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.ubuntu.com/usn/USN-1030-1"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.vupen.com/english/advisories/2010/3094"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.vupen.com/english/advisories/2010/3095"
        },
        {
          "source": "cve@mitre.org",
          "url": "http://www.vupen.com/english/advisories/2010/3118"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://kb.vmware.com/kb/1035108"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://osvdb.org/69608"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://secunia.com/advisories/42399"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://support.apple.com/kb/HT4581"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Vendor Advisory"
          ],
          "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Vendor Advisory"
          ],
          "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securityfocus.com/bid/45117"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securitytracker.com/id?1024803"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.ubuntu.com/usn/USN-1030-1"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.vupen.com/english/advisories/2010/3094"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.vupen.com/english/advisories/2010/3095"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.vupen.com/english/advisories/2010/3118"
        }
      ],
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-310"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*",
                    "matchCriteriaId": "36823B2B-5C72-4FF3-9301-FB263EB8CE09",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "59AFA33E-FEBC-45F5-9EC6-8AA363163FB5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "04D83332-B2FD-4E86-A76C-C3F1CD3B3A31",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "758A0011-20ED-414A-9DF3-50A161DF8BC2",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations."
          },
          {
            "lang": "es",
            "value": "MIT Kerberos 5 (tambi\u00e9n conocido como krb5) v1.8.x hasta v1.8.3 no rechaza las sumas de comprobaci\u00f3n RC4 (clave de derivaci\u00f3n), lo que podr\u00eda permitir a usuarios remotos autenticados falsificar un (1) AD-SIGNEDPATH o (2) la firma AD-KDC-ISSUED, y posiblemente obtener privilegios, aprovechando el espacio de claves peque\u00f1as que resultan de ciertas operaciones de cifrado de flujo de un byte (one-byte)."
          }
        ],
        "id": "CVE-2010-4020",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "SINGLE",
                "availabilityImpact": "NONE",
                "baseScore": 3.5,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 6.8,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
                "version": "3.0"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 3.4,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2010-12-02T16:22:21.207",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://kb.vmware.com/kb/1035108"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://osvdb.org/69608"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://secunia.com/advisories/42399"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://support.apple.com/kb/HT4581"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/bid/45117"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securitytracker.com/id?1024803"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.ubuntu.com/usn/USN-1030-1"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.vupen.com/english/advisories/2010/3094"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.vupen.com/english/advisories/2010/3095"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.vupen.com/english/advisories/2010/3118"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://kb.vmware.com/kb/1035108"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051976.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2010-December/051999.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.vmware.com/pipermail/security-announce/2011/000133.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://osvdb.org/69608"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://secunia.com/advisories/42399"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://support.apple.com/kb/HT4581"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-007.txt"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2010:246"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.redhat.com/support/errata/RHSA-2010-0925.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/archive/1/514953/100/0/threaded"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/archive/1/517739/100/0/threaded"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/45117"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securitytracker.com/id?1024803"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.ubuntu.com/usn/USN-1030-1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vmware.com/security/advisories/VMSA-2011-0007.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2010/3094"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2010/3095"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2010/3118"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-310"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-05T02:56:29+00:00",
      "cve": "CVE-2010-4020",
      "id": "CVE-2010-4020",
      "initial_release_date": "2010-11-30T00:00:00+00:00",
      "product_status:fixed": "85",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "krb5: krb5 may accept authdata checksums with low-entropy derived keys (MITKRB5-SA-2010-007)",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2010/cve-2010-4020.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-23T00:23:58Z",
      "cve": "CVE-2010-4020",
      "id": "CVE-2010-4020",
      "initial_release_date": "2023-02-15T05:56:18Z",
      "product_status:recommended": "256",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2010-4020",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2010-4020.json",
      "version": "21"
    }
  }
}



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.