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Vulnerability · Published Mar 26, 2021 · Assigned by redhat

CVE-2021-20193

Low 3.3

In plain English

A low-severity memory leak in tar. 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 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)3.3Low
Exploit odds (30 days)1.1%top 34.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20tar1.34-r0ALPINE-CVE-2021-20193
Alpine:v3.21tar1.34-r0ALPINE-CVE-2021-20193
Alpine:v3.22tar1.34-r0ALPINE-CVE-2021-20193
Alpine:v3.23tar1.34-r0ALPINE-CVE-2021-20193
Alpine:v3.24tar1.34-r0ALPINE-CVE-2021-20193
Debian:12tar1.34+dfsg-1DEBIAN-CVE-2021-20193
Debian:13tar1.34+dfsg-1DEBIAN-CVE-2021-20193
Debian:14tar1.34+dfsg-1DEBIAN-CVE-2021-20193
Ubuntu:22.04:LTStar1.34+dfsg-1build1UBUNTU-CVE-2021-20193

Affected products (as reported)

VendorProductVersions
n/a tar 1.33 and earlier

Weakness: CWE-401

References