CVE-2023-42452

Mastodon is a free, open-source social network server based on ActivityPub. In versions on the 4.x branch prior to versions 4.0.10, 4.2.8, and 4.2.0-rc2, under certain conditions, attackers can abuse the translation feature to bypass the server-side HTML sanitization, allowing unescaped HTML to execute in the browser. The impact is limited thanks to Mastodon's strict Content Security Policy, blocking inline scripts, etc. However a CSP bypass or loophole could be exploited to execute malicious XSS. Furthermore, it requires user interaction, as this can only occur upon clicking the “Translate” button on a malicious post. Versions 4.0.10, 4.2.8, and 4.2.0-rc2 contain a patch for this issue.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta1:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta2:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta3:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:4.2.0:rc1:*:*:*:*:*:*

History

22 Sep 2023, 17:12

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.4
First Time Joinmastodon
Joinmastodon mastodon
References (MISC) https://github.com/mastodon/mastodon/commit/ff32475f5f4a84ebf9619e7eef5bf8b4c075d0e2 - (MISC) https://github.com/mastodon/mastodon/commit/ff32475f5f4a84ebf9619e7eef5bf8b4c075d0e2 - Patch
References (MISC) https://github.com/mastodon/mastodon/security/advisories/GHSA-2693-xr3m-jhqr - (MISC) https://github.com/mastodon/mastodon/security/advisories/GHSA-2693-xr3m-jhqr - Vendor Advisory
CPE cpe:2.3:a:joinmastodon:mastodon:4.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta1:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta3:*:*:*:*:*:*
cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta2:*:*:*:*:*:*

19 Sep 2023, 17:57

Type Values Removed Values Added
New CVE

Information

Published : 2023-09-19 16:15

Updated : 2024-02-28 20:33


NVD link : CVE-2023-42452

Mitre link : CVE-2023-42452

CVE.ORG link : CVE-2023-42452


JSON object : View

Products Affected

joinmastodon

  • mastodon
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')