CVE-2017-13720

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:x.org:libxfont:*:*:*:*:*:*:*:*", "matchCriteriaId": "94159B28-552B-449D-BAD5-AED275362D64", "versionEndIncluding": "1.5.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:x.org:libxfont:2.0.0:*:*:*:*:*:*:*", "matchCriteriaId": "B9D9133B-6806-4947-B43F-F13FE6FA1FE7", "vulnerable": true}, {"criteria": "cpe:2.3:a:x.org:libxfont:2.0.1:*:*:*:*:*:*:*", "matchCriteriaId": "93F2E32E-A188-4EB6-929D-CF74271011C1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the PatternMatch function in fontfile/fontdir.c in libXfont through 1.5.2 and 2.x before 2.0.2, an attacker with access to an X connection can cause a buffer over-read during pattern matching of fonts, leading to information disclosure or a crash (denial of service). This occurs because '\\0' characters are incorrectly skipped in situations involving ? characters."}, {"lang": "es", "value": "En la funci\u00f3n PatternMatch en fontfile/fontdir.c en libXfont, en versiones hasta la 1.5.2 y versiones 2.x hasta la 2.0.2, un atacante con acceso a una conexi\u00f3n X puede provocar una sobrelectura de b\u00fafer durante una comparaci\u00f3n de patrones de fuentes, lo que da lugar a una revelaci\u00f3n de informaci\u00f3n o cierre inesperado (denegaci\u00f3n de servicio). Esto ocurre porque se omiten de manera incorrecta los caracteres \"\\0\" en situaciones en las que existen caracteres ?."}], "id": "CVE-2017-13720", "lastModified": "2026-06-17T01:05:03.030", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 3.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-10-11T17:29:00.303", "references": [{"source": "cve@mitre.org", "url": "http://www.debian.org/security/2017/dsa-3995"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1500690"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1054285"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d1e670a4a8704b8708e493ab6155589bcd570608"}, {"source": "cve@mitre.org", "url": "https://security.gentoo.org/glsa/201711-08"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2017/dsa-3995"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1500690"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1054285"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d1e670a4a8704b8708e493ab6155589bcd570608"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/201711-08"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.x.org/releases/individual/lib/libXfont2-2.0.2.tar.bz2"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "libXfont: Insufficient input validation in fontdir.c", "id": "1500690", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1500690"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L", "status": "draft"}, "cwe": "CWE-20", "details": ["In the PatternMatch function in fontfile/fontdir.c in libXfont through 1.5.2 and 2.x before 2.0.2, an attacker with access to an X connection can cause a buffer over-read during pattern matching of fonts, leading to information disclosure or a crash (denial of service). This occurs because '\\0' characters are incorrectly skipped in situations involving ? characters."], "name": "CVE-2017-13720", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "libXfont", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "libXfont", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "libXfont", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "libXfont2", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2017-10-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-13720\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-13720"], "threat_severity": "Low"}

{}