Vulnerability Monitor

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CVE-2020-14363

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.

Published

2020-09-11T18:15:13.380

Last Modified

2024-11-21T05:03:05.743

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-190
CWE-416
Type: Primary
CWE-190

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	x.org	libx11	< 1.6.12	Yes
Operating System	fedoraproject	fedora	33	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363 Issue Tracking, Third Party Advisory ([email protected])
https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt Third Party Advisory ([email protected])
https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh Exploit, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/ ([email protected])
https://lists.x.org/archives/xorg-announce/2020-August/003056.html Vendor Advisory ([email protected])
https://usn.ubuntu.com/4487-2/ Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txt Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.sh Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.x.org/archives/xorg-announce/2020-August/003056.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4487-2/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)