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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": "2026-04-29T01:13:23.040", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}]}, "published": "2011-08-19T17:55:03.037", "references": [{"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0"}, {"source": "secalert@redhat.com", "url": "http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-007.txt.asc"}, {"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html"}, {"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2012/May/msg00001.html"}, {"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2015/Dec/msg00000.html"}, {"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2015/Dec/msg00001.html"}, {"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2015/Dec/msg00002.html"}, {"source": "secalert@redhat.com", "url": "http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://lists.freedesktop.org/archives/xorg-announce/2011-August/001721.html"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": 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"af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=725760"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=727624"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/69141"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://support.apple.com/HT205635"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://support.apple.com/HT205637"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://support.apple.com/HT205640"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://support.apple.com/HT205641"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2011:1155", "cpe": "cpe:/o:redhat:enterprise_linux:4", "package": "xorg-x11-0:6.8.2-1.EL.69", "product_name": "Red Hat Enterprise Linux 4", "release_date": "2011-08-11T00:00:00Z"}, {"advisory": "RHSA-2011:1161", "cpe": "cpe:/o:redhat:enterprise_linux:4", "impact": "moderate", "package": "freetype-0:2.1.9-19.el4", "product_name": "Red Hat Enterprise Linux 4", "release_date": "2011-08-15T00:00:00Z"}, {"advisory": "RHSA-2011:1154", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "libXfont-0:1.2.2-1.0.4.el5_7", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2011-08-11T00:00:00Z"}, {"advisory": "RHSA-2011:1834", "cpe": "cpe:/o:redhat:rhel_eus:5.6", "package": "libXfont-0:1.2.2-1.0.3.el5_6", "product_name": "Red Hat Enterprise Linux 5.6 EUS - Server Only", "release_date": "2011-12-19T00:00:00Z"}, {"advisory": "RHSA-2011:1154", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "libXfont-0:1.4.1-2.el6_1", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2011-08-11T00:00:00Z"}], "bugzilla": {"description": "BSD compress LZW decoder buffer overflow", "id": "727624", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=727624"}, "csaw": false, "cvss": {"cvss_base_score": "6.9", "cvss_scoring_vector": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "status": "verified"}, "details": ["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."], "name": "CVE-2011-2895", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "impact": "low", "package_name": "busybox", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "gzip", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "mailx", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Not affected", "package_name": "ncompress", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "impact": "low", "package_name": "busybox", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "freetype", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "gzip", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "mailx", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "ncompress", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "impact": "low", "package_name": "busybox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "freetype", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "gzip", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "libarchive", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "mailx", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "ncompress", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2011-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-2895\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-2895"], "threat_severity": "Important"}

{}