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TI-2018-04828 Aliases CVE-2018-6552GHSA-4pgc-f487-53cr

Apport treats the container PID as the global PID when /proc/<global_pid>/ is missing

Priority LOW 34Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA.

Summary

Apport does not properly handle crashes originating from a PID namespace allowing local users to create certain files as root which an attacker could leverage to perform a denial of service via resource exhaustion, possibly gain root privileges, or escape from containers. The is_same_ns() function returns True when /proc/<global pid>/ does not exist in order to indicate that the crash should be handled in the global namespace rather than inside of a container. However, the portion of the data/apport code that decides whether or not to forward a crash to a container does not always replace sys.argv[1] with the value stored in the host_pid variable when /proc/<global pid>/ does not exist which results in the container pid being used in the global namespace. This flaw affects versions 2.20.8-0ubuntu4 through 2.20.9-0ubuntu7, 2.20.7-0ubuntu3.7, 2.20.7-0ubuntu3.8, 2.20.1-0ubuntu2.15 through 2.20.1-0ubuntu2.17, and 2.14.1-0ubuntu3.28.

Why it matters now

EPSS 0.00389 33rd percentileScored 2026-11-07
Fix Fixed Apport: 2.20.9-0ubuntu7.1, 2.20.1-0ubuntu2.18, 2.20.7-0ubuntu3.9

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—Apport2.20.8-0ubuntu4 and later; before 2.20.9-0ubuntu7.12.20.9-0ubuntu7.1Patch availableCNA
—Apport2.20.1-0ubuntu2.15 and later; before 2.20.1-0ubuntu2.182.20.1-0ubuntu2.18Patch availableCNA
—Apport2.20.7-0ubuntu3.7 and later; before 2.20.7-0ubuntu3.92.20.7-0ubuntu3.9Patch availableCNA
—Apport2.14.1-0ubuntu3.28—No fix listedCNA
  • Apport Vendor— Affected 2.20.8-0ubuntu4 and later; before 2.20.9-0ubuntu7.1 Fixed in 2.20.9-0ubuntu7.1 Patch available CNA
  • Apport Vendor— Affected 2.20.1-0ubuntu2.15 and later; before 2.20.1-0ubuntu2.18 Fixed in 2.20.1-0ubuntu2.18 Patch available CNA
  • Apport Vendor— Affected 2.20.7-0ubuntu3.7 and later; before 2.20.7-0ubuntu3.9 Fixed in 2.20.7-0ubuntu3.9 Patch available CNA
  • Apport Vendor— Affected 2.14.1-0ubuntu3.28 Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:a:apport_project:apport:2.14.1:*:*:*:*:*:*:*2.14.1VulnerableApport Project
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04Running onCanonical
cpe:2.3:a:apport_project:apport:2.20.9:*:*:*:*:*:*:*2.20.9VulnerableApport Project
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04Running onCanonical
cpe:2.3:a:apport_project:apport:2.20.7:*:*:*:*:*:*:*2.20.7VulnerableApport Project
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*17.10Running onCanonical
cpe:2.3:a:apport_project:apport:2.20.1:*:*:*:*:*:*:*2.20.1VulnerableApport Project
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04Running onCanonical
  • cpe:2.3:a:apport_project:apport:2.14.1:*:*:*:*:*:*:* Versions 2.14.1 Vulnerable ·Apport Project
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Running on ·Canonical
  • cpe:2.3:a:apport_project:apport:2.20.9:*:*:*:*:*:*:* Versions 2.20.9 Vulnerable ·Apport Project
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Running on ·Canonical
  • cpe:2.3:a:apport_project:apport:2.20.7:*:*:*:*:*:*:* Versions 2.20.7 Vulnerable ·Apport Project
  • cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* Versions 17.10 Running on ·Canonical
  • cpe:2.3:a:apport_project:apport:2.20.1:*:*:*:*:*:*:* Versions 2.20.1 Vulnerable ·Apport Project
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Running on ·Canonical

Remediation

  • Fix · CNA Apport Fixed in 2.20.9-0ubuntu7.1
  • Fix · CNA Apport Fixed in 2.20.1-0ubuntu2.18
  • Fix · CNA Apport Fixed in 2.20.7-0ubuntu3.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-6552
  2. 2026-10-03 Alias added: GHSA-4pgc-f487-53cr

References

Advisory 2

  • TI-2016-08055 An issue was discovered in Apport before 2.20.4. CVSS 3.0HIGH 7.8
  • TI-2016-08056 An issue was discovered in Apport before 2.20.4. CVSS 3.0HIGH 7.8
  • TI-2015-01197 The crash reporting feature in Apport 2.13 through 2.17.x before 2.17.1 allows local… CVSS 2.0HIGH 7.2
  • TI-2017-07823 An issue was discovered in Apport through 2.20.x. CVSS 3.0HIGH 7.8
  • TI-2016-08057 An issue was discovered in Apport before 2.20.4. CVSS 3.0MEDIUM 6.5
  • TI-2022-11302 Apport does not disable python crash handler before entering chroot CVSS 3.1HIGH 7.8
See all 23 →

Sources

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