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CVE-2011-3149 (GCVE-0-2011-3149)

Vulnerability from cvelistv5 – Published: 2012-07-22 17:00 – Updated: 2024-08-06 23:22
VLAI
Summary
The _expand_arg function in the pam_env module (modules/pam_env/pam_env.c) in Linux-PAM (aka pam) before 1.1.5 does not properly handle when environment variable expansion can overflow, which allows local users to cause a denial of service (CPU consumption).
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://security.gentoo.org/glsa/glsa-201206-31.xml vendor-advisoryx_refsource_GENTOO
http://www.ubuntu.com/usn/USN-1237-1 vendor-advisoryx_refsource_UBUNTU
http://secunia.com/advisories/46583 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/49711 third-party-advisoryx_refsource_SECUNIA
https://bugs.launchpad.net/ubuntu/+source/pam/+bu… x_refsource_CONFIRM
http://git.fedorahosted.org/git/?p=linux-pam.git%… x_refsource_CONFIRM
Date Public
2011-10-24 00:00
Show details on NVD website
To clipboard 

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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2011-3149\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2012-07-22T17:55:01.103\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The _expand_arg function in the pam_env module (modules/pam_env/pam_env.c) in Linux-PAM (aka pam) before 1.1.5 does not properly handle when environment variable expansion can overflow, which allows local users to cause a denial of service (CPU consumption).\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n _expand_arg en el m\u00f3dulo pam_env (modules / pam_env / pam_env.c) en Linux-PAM (tambi\u00e9n conocido como pam) antes de v1.1.5 no controla correctamente cuando la expansi\u00f3n de la variable de entorno puede desbordarse, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (el consumo de CPU).\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":2.1,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.1.4\",\"matchCriteriaId\":\"92B08B4D-8A9C-4BF4-94AD-9ED9E86C7138\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.1.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B59C70C7-FABE-4A45-A45D-2C7276D698DF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.2.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DBA50D8F-D5A8-4123-93CF-E7714571F411\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.2.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB8820C0-1ECB-45AD-A573-5667F0D09776\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.3.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5D416053-0010-4B25-9F7C-6054C51C1685\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.4.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B97AB578-0E9E-4370-8379-0CD455F2D740\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.5.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"22A6147C-CC0A-4C9F-B9A9-E144F2133592\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.6.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6DEF8EC8-0E0A-4C0A-95BE-FB7C23732083\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.6.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C9A9AB1C-FDF8-4E98-8773-387E03CD93E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.6.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8F94AA92-5854-46B9-8B3C-08FCC5B071CF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.6.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FD5C0039-827C-45CD-99BE-95459006CA59\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4256C34-DBCA-4FE0-96A5-874D7F00869A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.7.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1B2613D2-33C1-4132-AD9A-68190A59C0F4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"08FDE78F-119B-4FC8-BBFA-8048F2CF1227\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.8.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C4A75789-F7EC-4D9C-942A-243DF92E5CA5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3753027E-D3A4-45D4-A3A3-2320C48AF6C6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:0.99.10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6533A629-6351-4831-BBF7-44718262FAF3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.0.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"516F23F9-25B3-40DB-A3CA-2F1DE0678934\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.0.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5F3ACA7F-D247-439C-8B5E-287EC5D236AF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.0.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6A30E5C3-501D-4DAA-B7F7-E42F98DEDBF9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.0.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"AEC8C86C-9FC7-4838-BFD8-90431DEC4946\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.0.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"EBE3BF43-7402-4CC0-A329-C8597A0758C7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.1.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7A39C8AD-FA7C-4C64-AAB7-93CC461E73F2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.1.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1F7BA7CC-F284-40C8-998D-FC70CCAB58D9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.1.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"56F68CBA-E64A-4085-8902-5EBF9A5349D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:linux-pam:linux-pam:1.1.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4B696CDD-C93E-4E88-B2DC-BB9978D879E2\"}]}]}],\"references\":[{\"url\":\"http://git.fedorahosted.org/git/?p=linux-pam.git%3Ba=commitdiff%3Bh=109823cb621c900c07c4b6cdc99070d354d19444\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://secunia.com/advisories/46583\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://secunia.com/advisories/49711\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://security.gentoo.org/glsa/glsa-201206-31.xml\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.ubuntu.com/usn/USN-1237-1\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://bugs.launchpad.net/ubuntu/+source/pam/+bug/874565\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://git.fedorahosted.org/git/?p=linux-pam.git%3Ba=commitdiff%3Bh=109823cb621c900c07c4b6cdc99070d354d19444\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://secunia.com/advisories/46583\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://secunia.com/advisories/49711\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://security.gentoo.org/glsa/glsa-201206-31.xml\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.ubuntu.com/usn/USN-1237-1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://bugs.launchpad.net/ubuntu/+source/pam/+bug/874565\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T12:51:48+00:00",
      "cve": "CVE-2011-3149",
      "id": "CVE-2011-3149",
      "initial_release_date": "2011-10-24T00:00:00+00:00",
      "product_status:fixed": "114",
      "product_status:known_not_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "(pam_env): Infinite loop by expanding certain arguments",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-3149.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-02T12:59:44Z",
      "cve": "CVE-2011-3149",
      "id": "CVE-2011-3149",
      "initial_release_date": "2023-02-15T05:51:15Z",
      "product_status:recommended": "196",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2011-3149",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-3149.json",
      "version": "19"
    }
  }
}



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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.


Detection rules are retrieved from Rulezet.


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.