CVE-2020-27350: apt integer wraparound

Severity: medium (CVSS 5.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-10 · updated 2026-06-17
Weakness: CWE-190

Description

APT had several integer overflows and underflows while parsing .deb packages, aka GHSL-2020-168 GHSL-2020-169, in files apt-pkg/contrib/extracttar.cc, apt-pkg/deb/debfile.cc, and apt-pkg/contrib/arfile.cc. This issue affects: apt 1.2.32ubuntu0 versions prior to 1.2.32ubuntu0.2; 1.6.12ubuntu0 versions prior to 1.6.12ubuntu0.2; 2.0.2ubuntu0 versions prior to 2.0.2ubuntu0.2; 2.1.10ubuntu0 versions prior to 2.1.10ubuntu0.1;

Affected products

Debian Advanced Package Tool: from 1.2.32ubuntu0 before 1.2.32ubuntu0.2; from 1.6.12ubuntu0 before 1.6.12ubuntu0.2; from 2.0.2ubuntu0 before 2.0.2ubuntu0.2; from 2.1.10ubuntu0 before 2.1.10ubuntu0.2; before 1.8.2.2 — fixed in 1.2.32ubuntu0.2, 1.6.12ubuntu0.2, 1.8.2.2, 2.0.2ubuntu0.2, 2.1.10ubuntu0.2
NetApp Solidfire Baseboard Management Controller Firmware: all versions

How to fix

Upgrade to a fixed version: Debian Advanced Package Tool 1.2.32ubuntu0.2, 1.6.12ubuntu0.2, 1.8.2.2, 2.0.2ubuntu0.2. Check the vendor advisory for mitigations.

References

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