CVE-2023-42451 Mastodon Invalid Domain Name Normalization vulnerability
Attackers can spoof domains they do not own by exploiting a flaw in domain name normalization within the Mastodon server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-42451?
CVE-2023-42451 is a high-severity vulnerability in mastodon, published on 19 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0-rc2, under certain circumstances, attackers can exploit a flaw in domain name normalization to spoof domains they do not own. Versions 3.5.14, 4.0.10, 4.1.8, and 4.2.0-rc2 contain a patch for this issue.
Weakness: CWE-706
Which versions are affected by CVE-2023-42451?
1 open source package ship an affected version, including mastodon. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mastodon Bitnami | All versions | 3.5.14, 4.0.10, 4.1.8 |
Products include Joinmastodon Mastodon.
How do I fix CVE-2023-42451?
Upgrade mastodon to a fixed version for your release line: 3.5.14, 4.0.10 or 4.1.8.
Is CVE-2023-42451 being exploited?
There is no known exploitation of CVE-2023-42451 in the wild and no public exploit code.
Other vulnerabilities in mastodon
- CVE-2023-36460 Mastodon vulnerable to arbitrary file creation through media attachments
- CVE-2022-2166 Improper Restriction of Excessive Authentication Attempts in mastodon/mastodon
- CVE-2022-24307 Missing authorization in n/a
- CVE-2018-21018 Auth bypass in n/a
- CVE-2024-23832 Mastodon Remote user impersonation and takeover
Sources
Also known as BIT-mastodon-2023-42451, GHSA-v3xf-c9qf-j667.