CVEvulnerability
CVE-2020-14363
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-09-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-190, CWE-416
Description
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.
Affected configurations
• x.org libx11 (< 1.6.12)
• fedoraproject fedora 33
Related
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363 Issue Tracking, Third Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt Third Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh Exploit, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/ lists.fedoraproject.org
- https://lists.x.org/archives/xorg-announce/2020-August/003056.html Vendor Advisory
- https://usn.ubuntu.com/4487-2/ Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363 Issue Tracking, Third Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt Third Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh Exploit, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/ lists.fedoraproject.org
- https://lists.x.org/archives/xorg-announce/2020-August/003056.html Vendor Advisory
- https://usn.ubuntu.com/4487-2/ Third Party Advisory