Description
An improper sanitization of the compression_algorithm parameter in Canonical LXD allows an authenticated, unprivileged user to execute commands as the LXD daemon on the LXD server via API calls to the image and backup endpoints. This issue affected LXD from 4.12 through 6.6 and was fixed in the snap versions 5.0.6-e49d9f4 (channel 5.0/stable), 5.21.4-1374f39 (channel 5.21/stable), and 6.7-1f11451 (channel 6.0 stable). The channel 4.0/stable is not affected as it contains version 4.0.10.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
High
Confidentiality (Subsequent System)
High
Integrity (Subsequent System)
High
Availability (Subsequent System)
High
Affected products
- Canonical / LXD6.0 – 6.7
- Canonical / LXD5.21.0 – 5.21.4
- Canonical / LXD5.0.0 – 5.0.6
- Canonical / LXD4.12 – 4.12
References
- VENDOR_ADVISORYhttps://github.com/canonical/lxd/security/advisories/GHSA-4rmf-rcp8-2r9g
- PATCHhttps://github.com/canonical/lxd/commit/043696a13171ace7dd4c2b32d34ce039ab629052
- PATCHhttps://github.com/canonical/lxd/commit/7046979645c2ce1b63b2f9e60ddf6cbc4c4b78f9
- PATCHhttps://github.com/canonical/lxd/commit/b7b411caf5c4971bfe2386c72128f44d7e2aaf4f
- VENDOR_ADVISORYhttps://discourse.ubuntu.com/t/lxd-authenticated-remote-code-execution-fixes-available/78365