Vulnerability Description
Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary data into HTTP requests issued by Mastodon. This can be used to perform confused deputy attacks if the server configuration includes `ALLOWED_PRIVATE_ADDRESSES` to allow access to local exploitable services. Version 4.2.0-rc2 has a patch for the issue.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Joinmastodon | Mastodon | 4.2.0 |
Related Weaknesses (CWE)
References
- https://github.com/mastodon/mastodon/commit/94893cf24fc95b32cc7a756262acbe008c20Patch
- https://github.com/mastodon/mastodon/security/advisories/GHSA-hcqf-fw2r-52g4Vendor Advisory
- https://github.com/mastodon/mastodon/commit/94893cf24fc95b32cc7a756262acbe008c20Patch
- https://github.com/mastodon/mastodon/security/advisories/GHSA-hcqf-fw2r-52g4Vendor Advisory
FAQ
What is CVE-2023-42450?
CVE-2023-42450 is a vulnerability with a CVSS score of 5.4 (MEDIUM). Mastodon is a free, open-source social network server based on ActivityPub. Starting in version 4.2.0-beta1 and prior to version 4.2.0-rc2, by crafting specific input, attackers can inject arbitrary d...
How severe is CVE-2023-42450?
CVE-2023-42450 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-42450?
Check the references section above for vendor advisories and patch information. Affected products include: Joinmastodon Mastodon.