CVE-2023-36461
High
Description
Mastodon is a free, open-source social network server based on ActivityPub. When performing outgoing HTTP queries, Mastodon sets a timeout on individual read operations. Prior to versions 3.5.9, 4.0.5, and 4.1.3, a malicious server can indefinitely extend the duration of the response through slowloris-type attacks. This vulnerability can be used to keep all Mastodon workers busy for an extended duration of time, leading to the server becoming unresponsive. Versions 3.5.9, 4.0.5, and 4.1.3 contain a patch for this issue.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Mastodon
PublishedJul 6, 2023
First seenJul 6, 2023
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- joinmastodon mastodon3.5.9, 4.0.5, 4.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| joinmastodon mastodon | v < 3.5.9, 4.0.0 ≤ v < 4.0.5, 4.1.0 ≤ v < 4.1.3 | 3.5.9, 4.0.5, 4.1.3 |
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