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TI-2024-05705 Aliases CVE-2024-6156GHSA-4c49-9fpc-hc3v

Improper certificate validation in Canonical LXD

Priority MEDIUM 51CWE-295Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-295.

Summary

Mark Laing discovered that LXD's PKI mode, until version 5.21.2, could be bypassed if the client's certificate was present in the trust store.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00159 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed LXD (Canonical Ltd.): 4.0.10, 5.0.4, 5.21.2 +1github.com/canonical/lxd (Go): 0.0.0-20240708073652-5a492a3f0036

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
CanonicalLXD4.0 to before 4.0.10; 4.0 to before 5.0.4; 4.0 to before 5.21.2; 4.0 to before 6.14.0.10, 5.0.4, 5.21.2, 6.1Patch availableCNA
—github.com/canonical/lxd (Go)before 0.0.0-20240708073652-5a492a3f00360.0.0-20240708073652-5a492a3f0036Patch availableGHSA-4c49-9fpc-hc3v
  • LXD VendorCanonical Affected 4.0 to before 4.0.10; 4.0 to before 5.0.4; 4.0 to before 5.21.2; 4.0 to before 6.1 Fixed in 4.0.10, 5.0.4, 5.21.2, 6.1 Patch available CNA
  • github.com/canonical/lxd (Go) Vendor— Affected before 0.0.0-20240708073652-5a492a3f0036 Fixed in 0.0.0-20240708073652-5a492a3f0036 Patch available GHSA-4c49-9fpc-hc3v

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:*4.0.0 to before 4.0.10; 5.0.0 to before 5.0.4; 5.1 to before 5.21.2VulnerableCanonical
  • cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.0.10; 5.0.0 to before 5.0.4; 5.1 to before 5.21.2 Vulnerable ·Canonical

Remediation

  • Fix · CNA LXD (Canonical Ltd.) Fixed in 4.0.10, 5.0.4, 5.21.2, 6.1
  • Fix · GHSA-4c49-9fpc-hc3v github.com/canonical/lxd (Go) Fixed in 0.0.0-20240708073652-5a492a3f0036 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-6156
  2. 2026-10-03 Alias added: GHSA-4c49-9fpc-hc3v

References

Exploit 1

Advisory 2

Other 3

  • TI-2026-22659 Authenticated RCE via unsanitized compression_algorithm CVSS 4.0CRITICAL 9.4
  • TI-2026-47475 Path traversal via unvalidated instance name in backup tarball restore enables root file write / RCE CVSS 3.1CRITICAL 9.9
  • TI-2026-45146 Cross-project instance move bypasses all project restrictions allowing host command execution CVSS 3.1CRITICAL 9.9
  • TI-2026-45143 Cross-project instance copy bypasses target project restrictions via TOCTOU in config merge CVSS 3.1CRITICAL 9.9
  • TI-2026-45142 Project restriction bypass via instance migration config override CVSS 3.1CRITICAL 9.9
  • TI-2026-45140 Root RCE via image backup.yaml symlink CVSS 3.1CRITICAL 9.9
See all 34 →

Sources

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