CVE-2012-5642 (GCVE-0-2012-5642)

Vulnerability from cvelistv5 – Published: 2012-12-31 11:00 – Updated: 2024-08-06 21:14
VLAI
Summary
server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1088 records in the last 180 days details
References
Date Public
2012-12-06 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T21:14:16.279Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "[oss-security] 20121217 Re: CVE request: fail2ban 0.8.8 fixes an input variable quoting flaw on \u003cmatches\u003e content",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2012/12/17/2"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/fail2ban/fail2ban/commit/83109bc"
          },
          {
            "name": "[fail2ban-users] 20121206 0.8.8 release",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://sourceforge.net/mailarchive/message.php?msg_id=30193056"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://raw.github.com/fail2ban/fail2ban/master/ChangeLog"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugs.gentoo.org/show_bug.cgi?id=447572"
          },
          {
            "name": "openSUSE-SU-2013:0567",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00002.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=887914"
          },
          {
            "name": "MDVSA-2013:078",
            "tags": [
              "vendor-advisory",
              "x_refsource_MANDRIVA",
              "x_transferred"
            ],
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:078"
          },
          {
            "name": "openSUSE-SU-2013:0566",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2012-12-06T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2013-12-02T13:57:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "[oss-security] 20121217 Re: CVE request: fail2ban 0.8.8 fixes an input variable quoting flaw on \u003cmatches\u003e content",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2012/12/17/2"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/fail2ban/fail2ban/commit/83109bc"
        },
        {
          "name": "[fail2ban-users] 20121206 0.8.8 release",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://sourceforge.net/mailarchive/message.php?msg_id=30193056"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://raw.github.com/fail2ban/fail2ban/master/ChangeLog"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugs.gentoo.org/show_bug.cgi?id=447572"
        },
        {
          "name": "openSUSE-SU-2013:0567",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00002.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=887914"
        },
        {
          "name": "MDVSA-2013:078",
          "tags": [
            "vendor-advisory",
            "x_refsource_MANDRIVA"
          ],
          "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:078"
        },
        {
          "name": "openSUSE-SU-2013:0566",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00001.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2012-5642",
    "datePublished": "2012-12-31T11:00:00.000Z",
    "dateReserved": "2012-10-24T00:00:00.000Z",
    "dateUpdated": "2024-08-06T21:14:16.279Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2012-5642",
      "date": "2026-11-04",
      "epss": "0.03123",
      "percentile": "0.87886"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "43813F24-CB93-46D7-8F91-6D436FB04564",
                    "versionEndIncluding": "0.8.7.1",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.1.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7750E527-5A05-4716-BF4A-B40EA9E34394",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.1.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FA9C7EF4-DA9B-4ADF-A044-2AC8A2FC270F",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.1.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0FCFD263-E347-43DD-80A6-D222FCEF23D4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.3.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "64A0FEBA-647F-41F4-8590-7E8C7A49A36D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.3.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "40BBF7B9-57DB-4479-B2C3-8EB466185E94",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.4.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "D7847766-CF03-4BF1-BE69-09C50AEC3DFC",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.4.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E004A754-3CCB-409D-B13A-DF735ED63971",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.5.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "ADF9F5C0-7E85-40AC-A7AA-7442749E48D6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.5.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2331299E-1834-4853-B38B-9E24A364EC62",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.5.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "AA9B27B6-418F-4101-A4A1-6E887BF0BB39",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.5.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2B6C2141-12A6-428A-9223-A0CA743BC020",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.5.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A0468228-10A0-4F72-BE85-D50ED3AA10B4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.5.5:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B73E5BBF-3755-4DC8-840F-2466BB2B280D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.6.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "880958EA-3BE3-4F16-B323-3CA878BEB3A6",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.6.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DB79FF61-80D6-4AB8-BC6F-6924AF9A0969",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "66BAD83B-AACD-4BCE-8900-8558C6F82D7C",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "719BA249-7B47-488E-86BA-C08286FF8772",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A88DA08A-A1C6-4BC1-9BC1-BE823207BFA5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CD346590-84C5-473E-9672-2E920C71B7FD",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F288E708-A212-4007-A32A-3608C56C5F7B",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.5:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CF7EEF2A-DC72-4F51-B168-237EFA637988",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.6:*:*:*:*:*:*:*",
                    "matchCriteriaId": "0D366BB8-A4FB-44CC-94BE-3C3BA3861C91",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.7:*:*:*:*:*:*:*",
                    "matchCriteriaId": "114BC59D-4035-4BC6-B697-9D10415CBDD9",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.8:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CB94274B-C1AF-4F87-B244-7BA4526F5D1E",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.7.9:*:*:*:*:*:*:*",
                    "matchCriteriaId": "98844A94-ABB6-41B4-A5B0-3101F54A3652",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3F522ECF-7F87-4A25-9CF3-0BCD99B4CAEB",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "AFEB99EB-DA51-48BB-96BD-4D47D8839C75",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.2:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E29B3199-71BB-4EED-9D91-B6F941AD7BAC",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BE8CF239-5E91-4708-B594-FA825C69DFE9",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.4:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2DB5D2A5-78E3-49C0-9A8D-397B21E03E26",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.5:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FFFCA848-72E8-4E33-A636-3D9009AAF870",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.6:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A97A9988-C973-4ACF-BD37-570004F1AD38",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:fail2ban:fail2ban:0.8.7:*:*:*:*:*:*:*",
                    "matchCriteriaId": "BF73708F-4237-47BA-83B8-5999EED0EC28",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content."
          },
          {
            "lang": "es",
            "value": "server/action.py en Fail2ban antes de v0.8.8 no controla correctamente el contenido de las etiquetas \u0027matches\u0027, lo que podr\u00eda permitir a atacantes remotos provocar conductas inseguras en un archivo de acci\u00f3n personalizado a trav\u00e9s de s\u00edmbolos no especificados en este contenido.\r\n"
          }
        ],
        "id": "CVE-2012-5642",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 7.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2012-12-31T11:50:27.890",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00001.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00002.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://sourceforge.net/mailarchive/message.php?msg_id=30193056"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:078"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.openwall.com/lists/oss-security/2012/12/17/2"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://bugs.gentoo.org/show_bug.cgi?id=447572"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=887914"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://github.com/fail2ban/fail2ban/commit/83109bc"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://raw.github.com/fail2ban/fail2ban/master/ChangeLog"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00001.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-04/msg00002.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://sourceforge.net/mailarchive/message.php?msg_id=30193056"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2013:078"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2012/12/17/2"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://bugs.gentoo.org/show_bug.cgi?id=447572"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=887914"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Vendor Advisory"
            ],
            "url": "https://github.com/fail2ban/fail2ban/commit/83109bc"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://raw.github.com/fail2ban/fail2ban/master/ChangeLog"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T12:48:05+00:00",
      "cve": "CVE-2012-5642",
      "id": "CVE-2012-5642",
      "initial_release_date": "2012-10-08T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "fail2ban: does not escape the content of \u003cmatches\u003e",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-5642.json",
      "version": "3"
    }
  }
}



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

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.