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TI-2024-08645 Aliases CVE-2024-9313GHSA-x5q3-c8rm-w787

Improper authentication in Canonical Authd

Priority LOW 39CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

Authd PAM module before version 0.3.5 can allow broker-managed users to impersonate any other user managed by the same broker and perform any PAM operation with it, including authenticating as them.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00581 48th percentileScored 2026-11-07
Fix Fixed Authd (Canonical Ltd.): 0.3.5github.com/ubuntu/authd (Go): 0.0.0-20240930103526-63e527496b01, 0.3.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CanonicalAuthdbefore 0.3.50.3.5Patch availableCNA
—github.com/ubuntu/authd (Go)before 0.0.0-20240930103526-63e527496b010.0.0-20240930103526-63e527496b01Patch availableGHSA-x5q3-c8rm-w787
—github.com/ubuntu/authd (Go)0.1.0 to before 0.3.50.3.5Patch availableGHSA-x5q3-c8rm-w787
  • Authd VendorCanonical Affected before 0.3.5 Fixed in 0.3.5 Patch available CNA
  • github.com/ubuntu/authd (Go) Vendor— Affected before 0.0.0-20240930103526-63e527496b01 Fixed in 0.0.0-20240930103526-63e527496b01 Patch available GHSA-x5q3-c8rm-w787
  • github.com/ubuntu/authd (Go) Vendor— Affected 0.1.0 to before 0.3.5 Fixed in 0.3.5 Patch available GHSA-x5q3-c8rm-w787

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:canonical:authd:*:*:*:*:*:*:*:*before 0.3.5VulnerableCanonical
  • cpe:2.3:a:canonical:authd:*:*:*:*:*:*:*:* Versions before 0.3.5 Vulnerable ·Canonical

Remediation

  • Fix · CNA Authd (Canonical Ltd.) Fixed in 0.3.5
  • Fix · GHSA-x5q3-c8rm-w787 github.com/ubuntu/authd (Go) Fixed in 0.0.0-20240930103526-63e527496b01 Advisory →
  • Fix · GHSA-x5q3-c8rm-w787 github.com/ubuntu/authd (Go) Fixed in 0.3.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-9313
  2. 2026-10-03 Alias added: GHSA-x5q3-c8rm-w787

References

Advisory 3

Other 3

  • TI-2025-05129 Improper Permission Management in SSH Session Handling CVSS 3.1HIGH 8.5
  • TI-2024-08644 Authd, through version 0.3.6, did not sufficiently randomize user IDs to prevent… CVSS 3.1HIGH 7.5

Sources

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