CVE-2023-36460
CRITICAL severity · CVSS 9.9 · Path traversal
9.9CVSS CRITICAL
Summary
Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 3.5.0 and prior to versions 3.5.9, 4.0.5, and 4.1.3, attackers using carefully crafted media files can cause Mastodon's media processing code to create arbitrary files at any location. This allows attackers to create and overwrite any file Mastodon has access to, allowing Denial of Service and arbitrary Remote Code Execution. Versions 3.5.9, 4.0.5, and 4.1.3 contain a patch for this issue.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)37%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440 ↗
Additional information
- NVD record
- https://github.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440Patch
- http://www.openwall.com/lists/oss-security/2023/07/06/4
- https://github.com/mastodon/mastodon/releases/tag/v3.5.9Advisory
- https://github.com/mastodon/mastodon/releases/tag/v4.0.5Advisory
- https://github.com/mastodon/mastodon/releases/tag/v4.1.3Advisory
- https://github.com/mastodon/mastodon/security/advisories/GHSA-9928-3cp5-93fmAdvisory