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Vulnerability · Published Jul 20, 2021 · Assigned by mitre

CVE-2021-36976

Medium 6.5

In plain English

A medium-severity security flaw in the libarchive package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.8% (higher than 87% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)2.8%top 13.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

libarchive 3.4.1 through 3.5.1 has a use-after-free in copy_string (called from do_uncompress_block and process_block).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20libarchive3.6.0-r0ALPINE-CVE-2021-36976
Alpine:v3.21libarchive3.6.0-r0ALPINE-CVE-2021-36976
Alpine:v3.22libarchive3.6.0-r0ALPINE-CVE-2021-36976
Alpine:v3.23libarchive3.6.0-r0ALPINE-CVE-2021-36976
Alpine:v3.24libarchive3.6.0-r0ALPINE-CVE-2021-36976
Debian:12libarchive3.6.0-1DEBIAN-CVE-2021-36976
Debian:13libarchive3.6.0-1DEBIAN-CVE-2021-36976
Debian:14libarchive3.6.0-1DEBIAN-CVE-2021-36976
Ubuntu:22.04:LTSlibarchive3.5.2-1ubuntu1UBUNTU-CVE-2021-36976

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References