CVE-2021-3709

Apport file permission bypass through emacs byte compilation errors

Function check_attachment_for_errors() in file data/general-hooks/ubuntu.py could be tricked into exposing private data via a constructed crash 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

Canonical · apport

CVSS v3.1 NVD

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 UBUNTU

6.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS v2.0 NVD

2.1 LOWAV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS

0.46% chance of exploitation in the next 30 days, 39th percentile

Published

2021-10-01

Updated

2024-09-16

Proof-of-concept exploits (1)

• https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1934308

Security advisories

• https://ubuntu.com/security/notices/USN-5077-1
• https://ubuntu.com/security/notices/USN-5077-2
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3709

References

• CVE Record
• NVD entry