CVE-2021-3710: Apport info disclosure via path traversal bug in read_file

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-10-01 · updated 2026-06-17
Weakness: CWE-24

Description

An information disclosure via path traversal was discovered in apport/hookutils.py function read_file(). This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;

Affected products

Canonical apport: 2.14.1-0ubuntu1, 2.14.1-0ubuntu2, 2.14.1-0ubuntu3, 2.14.1-0ubuntu3.1, 2.14.1-0ubuntu3.2, 2.14.1-0ubuntu3.3 (+164)

References

https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1933832
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3710
https://ubuntu.com/security/notices/USN-5077-1
https://ubuntu.com/security/notices/USN-5077-2
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1933832
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3710
https://ubuntu.com/security/notices/USN-5077-1
https://ubuntu.com/security/notices/USN-5077-2

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