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CVE-2020-14363

Date: September 11, 2020

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.

Language: C

Severity Score

Related Resources (13)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363
https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt
https://security-tracker.debian.org/tracker/CVE-2020-14363
https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
https://lists.x.org/archives/xorg-announce/2020-August/003056.html
https://access.redhat.com/security/cve/CVE-2020-14363
https://usn.ubuntu.com/4487-2/
https://security.alpinelinux.org/vuln/CVE-2020-14363
https://nvd.nist.gov/vuln/detail/CVE-2020-14363
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-14363
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
https://www.mend.io/vulnerability-database/CVE-2020-14363

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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