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Vulnerability · Published Apr 26, 2021 · Assigned by redhat

CVE-2021-3472

High 7.8

In plain English

A high-severity security flaw in xorg-x11-server. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)1.1%top 35.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20xorg-server1.20.10-r5ALPINE-CVE-2021-3472
Alpine:v3.21xorg-server1.20.10-r5ALPINE-CVE-2021-3472
Alpine:v3.22xorg-server1.20.10-r5ALPINE-CVE-2021-3472
Alpine:v3.23xorg-server1.20.10-r5ALPINE-CVE-2021-3472
Alpine:v3.24xorg-server1.20.10-r5ALPINE-CVE-2021-3472
Alpine:v3.20xwayland21.1.0-r4ALPINE-CVE-2021-3472
Alpine:v3.21xwayland21.1.0-r4ALPINE-CVE-2021-3472
Alpine:v3.22xwayland21.1.0-r4ALPINE-CVE-2021-3472
Alpine:v3.23xwayland21.1.0-r4ALPINE-CVE-2021-3472
Alpine:v3.24xwayland21.1.0-r4ALPINE-CVE-2021-3472
Debian:12xorg-server2:1.20.11-1DEBIAN-CVE-2021-3472
Debian:13xorg-server2:1.20.11-1DEBIAN-CVE-2021-3472
Debian:14xorg-server2:1.20.11-1DEBIAN-CVE-2021-3472

Affected products (as reported)

VendorProductVersions
n/a xorg-x11-server xorg-x11-server 1.20.11

Weakness: CWE-191

References