CVE-2011-2895 (GCVE-0-2011-2895)

Vulnerability from cvelistv5 – Published: 2011-08-19 17:00 – Updated: 2024-08-06 23:15
VLAI
Summary
The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
https://support.apple.com/HT205635 x_refsource_CONFIRM
http://www.redhat.com/support/errata/RHSA-2011-11… vendor-advisoryx_refsource_REDHAT
http://www.ubuntu.com/usn/USN-1191-1 vendor-advisoryx_refsource_UBUNTU
http://www.openwall.com/lists/oss-security/2011/0… mailing-listx_refsource_MLIST
https://bugzilla.redhat.com/show_bug.cgi?id=725760 x_refsource_CONFIRM
http://secunia.com/advisories/45544 third-party-advisoryx_refsource_SECUNIA
https://support.apple.com/HT205637 x_refsource_CONFIRM
http://support.apple.com/kb/HT5130 x_refsource_CONFIRM
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://www.securityfocus.com/bid/49124 vdb-entryx_refsource_BID
http://secunia.com/advisories/45599 third-party-advisoryx_refsource_SECUNIA
http://www.redhat.com/support/errata/RHSA-2011-11… vendor-advisoryx_refsource_REDHAT
http://securitytracker.com/id?1025920 vdb-entryx_refsource_SECTRACK
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://lists.freedesktop.org/archives/xorg-announ… mailing-listx_refsource_MLIST
http://secunia.com/advisories/46127 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/45986 third-party-advisoryx_refsource_SECUNIA
http://www.redhat.com/support/errata/RHSA-2011-11… vendor-advisoryx_refsource_REDHAT
http://www.redhat.com/support/errata/RHSA-2011-18… vendor-advisoryx_refsource_REDHAT
http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin… x_refsource_CONFIRM
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://secunia.com/advisories/45568 third-party-advisoryx_refsource_SECUNIA
http://lists.freedesktop.org/archives/xorg-announ… mailing-listx_refsource_MLIST
https://support.apple.com/HT205641 x_refsource_CONFIRM
http://ftp.netbsd.org/pub/NetBSD/security/advisor… vendor-advisoryx_refsource_NETBSD
https://support.apple.com/HT205640 x_refsource_CONFIRM
http://cgit.freedesktop.org/xorg/lib/libXfont/com… x_refsource_CONFIRM
http://secunia.com/advisories/48951 third-party-advisoryx_refsource_SECUNIA
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://support.apple.com/kb/HT5281 x_refsource_CONFIRM
http://lists.apple.com/archives/security-announce… vendor-advisoryx_refsource_APPLE
http://www.debian.org/security/2011/dsa-2293 vendor-advisoryx_refsource_DEBIAN
https://bugzilla.redhat.com/show_bug.cgi?id=727624 x_refsource_CONFIRM
Date Public
2011-08-10 00:00
Show details on NVD website
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          "url": "http://support.apple.com/kb/HT5281"
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        {
          "name": "APPLE-SA-2012-05-09-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_APPLE"
          ],
          "url": "http://lists.apple.com/archives/security-announce/2012/May/msg00001.html"
        },
        {
          "name": "DSA-2293",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "http://www.debian.org/security/2011/dsa-2293"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=727624"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2011-2895",
    "datePublished": "2011-08-19T17:00:00.000Z",
    "dateReserved": "2011-07-27T00:00:00.000Z",
    "dateUpdated": "2024-08-06T23:15:31.486Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2011-2895",
      "date": "2026-05-29",
      "epss": "0.07018",
      "percentile": "0.91605"
    },
    "fkie_nvd": {
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.\"}, {\"lang\": \"es\", \"value\": \"El descompresor en LZW en (1) la funci\\u00f3n BufCompressedFill en fontfile/decompress.c en X.Org libXfont antes de la versi\\u00f3n v1.4.4 y (2) compress/compress.c en 4.3BSD, tal y como se utiliza en zopen.c en OpenBSD antes de la versi\\u00f3n v3.8, FreeBSD, NetBSD, FreeType v2.1.9, y otros productos, no controla correctamente las palabras de c\\u00f3digo ausentes de la tabla de descompresi\\u00f3n, lo que permite provocar un bucle infinito o un desbordamiento de b\\u00fafer basado en memoria din\\u00e1mica (heap) a atacantes (dependiendo del contexto) y posiblemente ejecutar c\\u00f3digo de su elecci\\u00f3n a trav\\u00e9s de un flujo comprimido debidamente modificado. Se trata de un problema relacionado con los CVE-2006-1168 y CVE-2011 2896.\"}]",
      "id": "CVE-2011-2895",
      "lastModified": "2024-11-21T01:29:13.317",
      "metrics": "{\"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:C/I:C/A:C\", \"baseScore\": 9.3, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 8.6, \"impactScore\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
      "published": "2011-08-19T17:55:03.037",
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      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-119\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2011-2895\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2011-08-19T17:55:03.037\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.\"},{\"lang\":\"es\",\"value\":\"El descompresor en LZW en (1) la funci\u00f3n BufCompressedFill en fontfile/decompress.c en X.Org libXfont antes de la versi\u00f3n v1.4.4 y (2) compress/compress.c en 4.3BSD, tal y como se utiliza en zopen.c en OpenBSD antes de la versi\u00f3n v3.8, FreeBSD, NetBSD, FreeType v2.1.9, y otros productos, no controla correctamente las palabras de c\u00f3digo ausentes de la tabla de descompresi\u00f3n, lo que permite provocar un bucle infinito o un desbordamiento de b\u00fafer basado en memoria din\u00e1mica (heap) a atacantes (dependiendo del contexto) y posiblemente ejecutar c\u00f3digo de su elecci\u00f3n a trav\u00e9s de un flujo comprimido debidamente modificado. Se trata de un problema relacionado con los CVE-2006-1168 y CVE-2011 2896.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:C/I:C/A:C\",\"baseScore\":9.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":8.6,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"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:freetype:freetype:2.1.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F73474B9-6853-4C5C-9CB9-5F4D3080D1C5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.4.3\",\"matchCriteriaId\":\"366E84EE-4BAC-4816-B04A-7B60F70B0084\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"45A7B86F-A74E-42D8-BBE6-D86C4EB672B2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9806D538-0672-4D27-9A32-F41BB53DF738\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"29297813-F2F4-48BF-8DEA-DC83E44D154E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C1437F3D-127E-45E7-B678-85BF208BAD30\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"26743145-32B4-45A6-8912-2B97EF59B677\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.5:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1C18E74E-DB01-4D5F-BD18-DE370BA56A38\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.6:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"06DBC61A-10CD-41ED-AC1B-16C867823059\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.7:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"061E16E4-0DD2-45B0-927D-5E6D97D54D9A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"58F3B17A-D8A9-4581-8EAC-4D6498A23F4D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.2.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D064C118-DC51-46CF-961E-3D70C1EEFC92\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.3.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D9F45C46-F416-46FC-8C98-79D57BB397D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.3.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B21FE78A-41E1-46A7-8129-94CBA34A3FA5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.3.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5ADFF46D-9680-410C-B8B8-79F629534465\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.3.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D36FBB2E-7BCD-4212-AE04-8C7C6B57CD49\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.3.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8A603E28-7D58-44FB-819E-5F22FA9860EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.4.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2D9EE6A0-89DC-464D-890F-2C0E5CDCFAA4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.4.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B056FDAB-4B10-4B32-A942-84864D39CBD6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:x:libxfont:1.4.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"642C350E-C81B-46F7-84B4-D3DE45E70DC4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D9EC02F3-3905-460D-8949-3B26394215CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:netbsd:netbsd:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B55E4B92-88E0-41F0-AFA7-046A8D34A2CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"3.7\",\"matchCriteriaId\":\"29DC69AE-D8BB-410B-B911-BFEA95774C3D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:2.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"36DF0D51-FCFA-46A3-B834-E80DFA91DFDC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:2.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5CB726CF-ADA2-4CDA-9786-1E84AC53740A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1FC373FC-88AC-4B6D-A289-51881ACD57F7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:2.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1D2DA7F0-E3C0-447A-A2B0-ECC928389D84\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FEBE290B-5EC6-4BBA-B645-294C150E417A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:openbsd:openbsd:2.5:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"ACE7FDFB-C6A6-4B58-B0B4-236E4EA76EF6\"},{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  }
}


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Tags
Taxonomy of the tags.





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.