CVE-2021-3710 json
Apport info disclosure via path traversal bug in read_file
published 2021-10-01 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-26993
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
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;
Patch / fix
- Canonical apport 2.14.1-0ubuntu3.29+esm8, 2.20.1-0ubuntu2.30+esm2, 2.20.9-0ubuntu7.26, 2.20.11-0ubuntu27.20, 2.20.11-0ubuntu65.3
- apport Ubuntu 18.04 LTS 2.20.9-0ubuntu7.26
- apport Ubuntu 20.04 LTS 2.20.11-0ubuntu27.20
- apport Ubuntu Pro 14.04 LTS 2.14.1-0ubuntu3.29+esm8
- apport Ubuntu Pro 16.04 LTS 2.20.1-0ubuntu2.30+esm2
ubuntu advisories UBUNTU-CVE-2021-3710
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1933832 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.7 | AV:L/AC:M/Au:N/C:C/I:N/A:N |
Affected products
- Canonical apport
Classification
References
-
bugs.launchpad.net
/ubuntu/+source/apport/+bug/1933832
exploit, vendor-advisory
-
ubuntu.com
/security/notices/USN-5077-1
vendor-advisory
-
ubuntu.com
/security/notices/USN-5077-2
vendor-advisory
-
cve.mitre.org
/cgi-bin/cvename.cgi?name=CVE-2021-3710
third-party-advisory
Sources
- CVE List CVE-2021-3710
- NVD CVE-2021-3710
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.