Vulnerability · Published Oct 1, 2021 · Assigned by canonical

CVE-2021-3709Apport file permission bypass through emacs byte compilation errors

Medium 6.5

In plain English

A medium-severity security flaw in apport from Canonical. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.5%top 59.7% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
Canonical	apport	2.14.1 – before 2.14.1-0ubuntu3.29+esm82.20.1 – before 2.20.1-0ubuntu2.30+esm22.20.9 – before 2.20.9-0ubuntu7.262.20.11 – before 2.20.11-0ubuntu27.20

Weakness: CWE-538 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3709 x_refsource_MISC
https://ubuntu.com/security/notices/USN-5077-1 x_refsource_MISC
https://ubuntu.com/security/notices/USN-5077-2 x_refsource_MISC
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1934308 x_refsource_MISC