CVE-2023-42450: Mastodon Server-Side Request Forgery vulnerability
First published: Tue Sep 19 2023(Updated: )
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.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 CVE-2023-42450?
CVE-2023-42450 is a vulnerability in Mastodon that allows attackers to inject arbitrary data into HTTP requests.
How does CVE-2023-42450 affect Mastodon?
CVE-2023-42450 affects Mastodon versions 4.2.0-beta1 to 4.2.0-rc2.
What is the severity of CVE-2023-42450?
CVE-2023-42450 has a severity rating of 7.5 out of 10 (high).
How can attackers exploit CVE-2023-42450?
Attackers can exploit CVE-2023-42450 by crafting specific input to inject arbitrary data into HTTP requests issued by Mastodon.
How can I fix CVE-2023-42450?
To fix CVE-2023-42450, it is recommended to update Mastodon to version 4.2.0-rc2 or later.
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- collector/mitre-cve
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- agent/severity
- agent/event
- agent/first-publish-date
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- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/joinmastodon
- canonical/mastodon
- version/mastodon/4.2.0-beta1
- version/mastodon/4.2.0-beta2
- version/mastodon/4.2.0-beta3
- version/mastodon/4.2.0-rc1