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TI-2021-12230 Aliases CVE-2021-32556GHSA-6hq6-w9x9-j77g

apport get_modified_conffiles() function command injection

Priority LOW 18CWE-78Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

It was discovered that the get_modified_conffiles() function in backends/packaging-apt-dpkg.py allowed injecting modified package names in a manner that would confuse the dpkg(1) call.

Why it matters now

EPSS 0.00333 26th percentileScored 2026-11-07
Fix Fixed apport (Canonical): 2.20.1-0ubuntu2.30+esm1, 2.20.9-0ubuntu7.24, 2.20.11-0ubuntu27.18 +3

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Canonicalapport2.20.1 to before 2.20.1-0ubuntu2.30+esm1; 2.20.9 to before 2.20.9-0ubuntu7.24; 2.20.11-0ubuntu27 to before 2.20.11-0ubuntu27.18; 2.20.11-0ubuntu50 to before 2.20.11-0ubuntu50.7; 2.20.11-0ubuntu65 to before 2.20.11-0ubuntu65.1; 2.14.1-0ubuntu3 to before 2.14.1-0ubuntu3.29+esm72.20.1-0ubuntu2.30+esm1, 2.20.9-0ubuntu7.24, 2.20.11-0ubuntu27.18, 2.20.11-0ubuntu50.7, 2.20.11-0ubuntu65.1, 2.14.1-0ubuntu3.29+esm7Patch availableCNA
  • apport VendorCanonical Affected 2.20.1 to before 2.20.1-0ubuntu2.30+esm1; 2.20.9 to before 2.20.9-0ubuntu7.24; 2.20.11-0ubuntu27 to before 2.20.11-0ubuntu27.18; 2.20.11-0ubuntu50 to before 2.20.11-0ubuntu50.7; 2.20.11-0ubuntu65 to before 2.20.11-0ubuntu65.1; 2.14.1-0ubuntu3 to before 2.14.1-0ubuntu3.29+esm7 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, 2.14.1-0ubuntu3.29+esm7 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:*2.14.1-0ubuntu3 to before 2.14.1-0ubuntu3.29\+esm7; 2.20.1 to before 2.20.1-0ubuntu2.30\+esm1; 2.20.9 to before 2.20.9-0ubuntu7.24; 2.20.11-0ubuntu27 to before 2.20.11-0ubuntu27.18; 2.20.11-0ubuntu50 to before 2.20.11-0ubuntu50.7; 2.20.11-0ubuntu65 to before 2.20.11-0ubuntu65.1VulnerableCanonical
  • cpe:2.3:a:canonical:apport:*:*:*:*:*:*:*:* Versions 2.14.1-0ubuntu3 to before 2.14.1-0ubuntu3.29\+esm7; 2.20.1 to before 2.20.1-0ubuntu2.30\+esm1; 2.20.9 to before 2.20.9-0ubuntu7.24; 2.20.11-0ubuntu27 to before 2.20.11-0ubuntu27.18; 2.20.11-0ubuntu50 to before 2.20.11-0ubuntu50.7; 2.20.11-0ubuntu65 to before 2.20.11-0ubuntu65.1 Vulnerable ·Canonical

Remediation

  • Fix · CNA apport (Canonical) 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, 2.14.1-0ubuntu3.29+esm7

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Canonical apport 2.14.1-0ubuntu3.29+esm7, 2.20.1-0ubuntu2.30+esm1 and 4 more versions

    11 records Highest priority Priority LOW 11 LOW

    Other records, highest priority first

    • TI-2021-12229 apport read_file() function could follow maliciously constructed symbolic linksPriority LOW 32
    • TI-2021-12228 apport read_file() function could follow maliciously constructed symbolic linksPriority LOW 32
    • TI-2021-12227 apport read_file() function could follow maliciously constructed symbolic linksPriority LOW 32
    Show all 11 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32556
  2. 2026-10-03 Alias added: GHSA-6hq6-w9x9-j77g

References

Advisory 1

  • TI-2025-04530 Race Condition in Canonical Apport CVSS 3.1MEDIUM 4.7
  • TI-2020-09600 gdbus setgid privilege escalation CVSS 3.1LOW 3.1
  • TI-2025-04908 Ubuntu Apport Insecure File Permissions Vulnerability CVSS 4.0LOW 1.9
  • TI-2022-11298 Users can consume unlimited disk space in /var/crash CVSS 3.1HIGH 7.5
  • TI-2021-07816 apport can be stalled by reading a FIFO CVSS 3.1HIGH 8.8
  • TI-2023-01253 local privilege escalation in apport-cli CVSS 3.1HIGH 7.8
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences