CVE-2021-32554
apport read_file() function could follow maliciously constructed symbolic links
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.20.1-0ubuntu2.30+esm1, 2.20.9-0ubuntu7.24, 2.20.11-0ubuntu27.18, 2.20.11-0ubuntu50.7, 2.20.11-0ubuntu65.1, and 1 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg package apport hooks, it could expose private data to other local users.
Timeline
- CVE published
- Record last updated
Affected versions
- Canonical apport
From 2.20.1 · fixed in 2.20.1-0ubuntu2.30+esm1; From 2.20.9 · fixed in 2.20.9-0ubuntu7.24; From 2.20.11-0ubuntu27 · fixed in 2.20.11-0ubuntu27.18; From 2.20.11-0ubuntu50 · fixed in 2.20.11-0ubuntu50.7; From 2.20.11-0ubuntu65 · fixed in 2.20.11-0ubuntu65.1; From 2.14.1-0ubuntu3 · fixed in 2.14.1-0ubuntu3.29+esm7