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CVE-2023-36460

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Date: July 6, 2023

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.

Language: Ruby

Severity Score

Related Resources (8)

http://www.openwall.com/lists/oss-security/2023/07/06/4
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
https://github.com/mastodon/mastodon/releases/tag/v3.5.9
https://nvd.nist.gov/vuln/detail/CVE-2023-36460
https://www.mend.io/vulnerability-database/CVE-2023-36460

Severity Score

Weakness Type (CWE)

Path Traversal

CWE-22

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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