CVE-2020-27350 - CVE House
Back to Database
Status published Medium CVE-2020-27350

apt integer wraparound

Vulnerability 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;

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-27350

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Kevin Backhouse

References

More from Canonical

View All →
CVE-2025-6966
Null-pointer dereference in python-apt TagSection.keys()
Medium 6.9
CVE-2025-6224
Key leakage in juju/utils certificates
Medium 6.5
CVE-2025-5689
Improper Permission Management in SSH Session Handling
High 8.5
CVE-2025-5467
Ubuntu Apport Insecure File Permissions Vulnerability
Low 1.9
CVE-2025-5199
LPE on Multipass for macOS
High 7.3

Affected Vendor

Affected Software

apt
Vulnerable Versions:
1.2.32ubuntu0, 1.6.12ubuntu0, 2.0.2ubuntu0, 2.1.10ubuntu0

Timeline

Official Publish: December 10th, 2020
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

Weaknesses (CWE)

CWE-190

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1499 Endpoint Denial of Service
Impact