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.
References
Configurations
Configuration 1 (hide)
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History
22 Sep 2023, 17:12
| Type | Values Removed | Values Added |
|---|---|---|
| References | (MISC) https://github.com/mastodon/mastodon/commit/ff32475f5f4a84ebf9619e7eef5bf8b4c075d0e2 - Patch | |
| References | (MISC) https://github.com/mastodon/mastodon/security/advisories/GHSA-2693-xr3m-jhqr - Vendor Advisory | |
| First Time |
Joinmastodon mastodon
Joinmastodon |
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| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.4 |
| CPE | cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:* 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:*:*:*:*:*:* cpe:2.3:a:joinmastodon:mastodon:4.2.0:beta1:*:*:*:*:*:* |
19 Sep 2023, 17:57
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2023-09-19 16:15
Updated : 2023-12-10 15:14
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')