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CVE

CVE-2024-23832

Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for aut

Mastodon is a free, open-source social network server based on ActivityPub Mastodon allows configuration of LDAP for authentication. Due to insufficient origin validation in all Mastodon, attackers can impersonate and take over any remote account. Every Mastodon version prior to 3.5.17 is vulnerable, as well as 4.0.x versions prior to 4.0.13, 4.1.x version prior to 4.1.13, and 4.2.x versions prior to 4.2.5.

CRITICAL · CVSS 9.4 EPSS 0.01756
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-290Authentication Bypass by Spoofing
▤

Affected Products & Versions

4
joinmastodon mastodon< 3.5.17
joinmastodon mastodon>= 4.0.0 and < 4.0.13
joinmastodon mastodon>= 4.1.0 and < 4.1.13
joinmastodon mastodon>= 4.2.0 and < 4.2.5
▣

Scoring & Timeline

9.4
CRITICAL · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Feb 2024 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2024/02/02/4Mailing ListPatch
https://github.com/mastodon/mastodon/commit/1726085db5cd73dd30953da858f9887bcc90b958Patch
https://github.com/mastodon/mastodon/security/advisories/GHSA-3fjr-858r-92rwVendor Advisory
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