CVE-2020-14346 — Integer Underflow (Wrap or Wraparound) in X Server

CWE-191 — Integer Underflow (Wrap or Wraparound)CWE-190 — Integer Overflow or Wraparound12 documents8 sources
Severity
7.8HIGHNVD
EPSS
0.2%
top 61.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
X.org Xorg-serverX.org X ServerTHE X.org Foundation Xorg-x11-server+2 more
Timeline
PublishedSep 15
Latest updateMay 24

Description

A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X input extension protocol decoding in the X server may lead to arbitrary access of memory contents. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶CVEListV5the_x.org_foundation/xorg-x11-serverbefore xorg-x11-server 1.20.9
▶Debianx.org/xorg-server< 2:1.20.9-1+3
▶Ubuntux.org/xorg-server< 2:1.18.4-0ubuntu0.9+3
▶NVDx.org/x_server< 1.20.9

Also affects: Ubuntu Linux 14.04, Enterprise Linux 6.0, 7.0, 8.0

Patches

Patch: lists.x.org ↗Patch: lists.x.org ↗

🔴Vulnerability Details

5
GHSA
GHSA-483f-26r4-2fvr: A flaw was found in xorg-x11-server before 1↗2022-05-24
▶
CVEList
CVE-2020-14346: A flaw was found in xorg-x11-server before 1↗2020-09-15
▶
OSV
CVE-2020-14346: A flaw was found in xorg-x11-server before 1↗2020-09-15
▶
OSV
xorg-server vulnerabilities↗2020-09-09
▶
OSV
xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 vulnerabilities↗2020-09-02
▶

📋Vendor Advisories

4
Ubuntu
X.Org X Server vulnerabilities↗2020-09-09
▶
Ubuntu
X.Org X Server vulnerabilities↗2020-09-02
▶
Red Hat
xorg-x11-server: Integer underflow in the X input extension protocol↗2020-08-25
▶
Debian
CVE-2020-14346: xorg-server - A flaw was found in xorg-x11-server before 1.20.9. An integer underflow in the X...↗2020
▶

💬Community

2
Bugzilla
CVE-2020-14346 xorg-x11-server: Integer underflow in the X input extension protocol [fedora-all]↗2020-08-25
▶
Bugzilla
CVE-2020-14346 xorg-x11-server: Integer underflow in the X input extension protocol↗2020-07-30
▶
CVE-2020-14346 — Integer Underflow (Wrap or Wraparound) | cvebase