CVE-2020-14363

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{"affected": [{"affectedData": [{"product": "libX11", "vendor": "The X11 Project", "versions": [{"status": "affected", "version": "1.6.12"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:*", "matchCriteriaId": "41164C4C-0C11-4BF9-9973-A83AE0AF446D", "versionEndExcluding": "1.6.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad de desbordamiento de enteros conllevando a una doble liberaci\u00f3n en libX11. Este fallo permite a un atacante privilegiado local causar que una aplicaci\u00f3n compilada con libX11 se bloquee o, en algunos casos, resulte en una ejecuci\u00f3n de c\u00f3digo arbitraria. La mayor amenaza de este fallo es la confidencialidad, la integridad y la disponibilidad del sistema"}], "id": "CVE-2020-14363", "lastModified": "2026-06-17T02:54:37.620", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-09-11T18:15:13.380", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh"}, {"source": "secalert@redhat.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "https://lists.x.org/archives/xorg-announce/2020-August/003056.html"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4487-2/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://lists.x.org/archives/xorg-announce/2020-August/003056.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4487-2/"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}, {"lang": "en", "value": "CWE-416"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-190"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2020:4946", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "libX11-0:1.6.4-4.el6_10", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2020-11-05T00:00:00Z"}, {"advisory": "RHSA-2020:4908", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "libX11-0:1.6.7-3.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2020-11-04T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "egl-wayland-0:1.1.5-3.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "libdrm-0:2.4.103-1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "libglvnd-1:1.3.2-1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "libinput-0:1.16.3-1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "libwacom-0:1.6-2.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "libX11-0:1.6.8-4.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "mesa-0:20.3.3-2.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "xorg-x11-drivers-0:7.7-30.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1804", "cpe": "cpe:/a:redhat:enterprise_linux:8", "impact": "moderate", "package": "xorg-x11-server-0:1.20.10-1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}], "bugzilla": {"description": "libX11: integer overflow leads to double free in locale handling", "id": "1872473", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1872473"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-190->CWE-416", "details": ["An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.", "An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability."], "name": "CVE-2020-14363", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "libX11", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2020-08-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-14363\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-14363\nhttps://lists.x.org/archives/xorg-announce/2020-August/003056.html"], "statement": "Xorg server does not run with root privileges in Red Hat Enterprise Linux 8. Therefore this flaw has been rated as having a moderate impact for Red Hat Enterprise Linux 8.", "threat_severity": "Important"}

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