CVE-2023-42450

Mastodon Server-Side Request Forgery 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.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.28%
Vendor Advisory github.com
Affected: mastodon mastodon
Published at:
Updated at:

References

Link Tags
https://github.com/mastodon/mastodon/security/advisories/GHSA-hcqf-fw2r-52g4 vendor advisory
https://github.com/mastodon/mastodon/commit/94893cf24fc95b32cc7a756262acbe008c20a9d2 patch

Frequently Asked Questions

What is the severity of CVE-2023-42450?
CVE-2023-42450 has been scored as a medium severity vulnerability.
How to fix CVE-2023-42450?
To fix CVE-2023-42450, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-42450 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-42450 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-42450?
CVE-2023-42450 affects mastodon mastodon.
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