Description
The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | swupdate | 2024.12+dfsg-1 | — |
| Debian 13 | swupdate | 2024.12+dfsg-1 | — |
| Debian 12 | swupdate | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mongoose | No fix yet | — |
| Ubuntu 24.04 LTS | swupdate | No fix yet | — |
| Ubuntu 22.04 LTS | swupdate | No fix yet | — |