CVE-2023-42451: Mastodon Invalid Domain Name Normalization vulnerability
First published: Tue Sep 19 2023(Updated: )
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.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mastodon | <3.5.14 | |
| Mastodon | >=4.0.0<4.0.10 | |
| Mastodon | >=4.1.0<4.1.8 | |
| Mastodon | =4.2.0-beta1 | |
| Mastodon | =4.2.0-beta2 | |
| Mastodon | =4.2.0-beta3 | |
| Mastodon | =4.2.0-rc1 |
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Reference Links
Frequently Asked Questions
What is Mastodon?
Mastodon is a free open-source social network server based on ActivityPub.
What is the severity of CVE-2023-42451?
The severity of CVE-2023-42451 is high with a CVSS score of 7.4.
How can an attacker exploit CVE-2023-42451?
Under certain circumstances, attackers can exploit a flaw in domain name normalization to spoof domains they do not own.
Which versions of Mastodon are affected by CVE-2023-42451?
Versions 3.5.14, 4.0.0 to 4.0.10, 4.1.0 to 4.1.8, and 4.2.0-rc2 are affected by CVE-2023-42451.
How do I fix CVE-2023-42451?
To fix CVE-2023-42451, update your Mastodon server to versions 3.5.14, 4.0.10, 4.1.8, or 4.2.0-rc2.
- agent/references
- agent/author
- agent/type
- agent/softwarecombine
- agent/title
- agent/weakness
- agent/remedy
- agent/severity
- agent/event
- agent/first-publish-date
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- vendor/joinmastodon
- canonical/mastodon
- version/mastodon/4.0.0
- version/mastodon/4.1.0
- version/mastodon/4.2.0-beta1
- version/mastodon/4.2.0-beta2
- version/mastodon/4.2.0-beta3
- version/mastodon/4.2.0-rc1