CVE-2020-14361
HIGHX.Org Server < 1.20.9 - Integer Underflow to Heap-Buffer Overflow
Title source: llmDescription
A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
References (5)
Core 5
Core References
Third Party Advisory vendor-advisory
https://usn.ubuntu.com/4488-2/
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202012-01
Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1869142
Mailing List, Patch, Vendor Advisory
https://lists.x.org/archives/xorg-announce/2020-August/003058.html
Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-20-1418/
Scores
CVSS v3
7.8
EPSS
0.0023
EPSS Percentile
46.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-191
Status
published
Products (5)
canonical/ubuntu_linux
14.04
redhat/enterprise_linux
6.0
redhat/enterprise_linux
7.0
redhat/enterprise_linux
8.0
x.org/x_server
< 1.20.9
Published
Sep 15, 2020
Tracked Since
Feb 18, 2026