Vulnerability CVE-2023-36460
Published: 2023-07-06

Description:
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.

Type:

CWE-22

 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))

 References:
https://github.com/mastodon/mastodon/releases/tag/v3.5.9
https://github.com/mastodon/mastodon/security/advisories/GHSA-9928-3cp5-93fm
https://github.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440
https://github.com/mastodon/mastodon/releases/tag/v4.0.5
https://github.com/mastodon/mastodon/releases/tag/v4.1.3
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