GHSA-ggmv-j932-q89q

Chall-Manager's HTTP Gateway is vulnerable to DoS due to missing header timeout

Source: GitHub Advisory Database (reviewed) High CVE-2025-53634

Packages

Ecosystem	Package	Affected	Fixed in
Go	github.com/ctfer-io/chall-manager	< 0.1.4	0.1.4

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact The HTTP Gateway processes headers, but with no timeout set. With a Slowloris attack, an attacker could cause Denial of Service (DoS). Exploitation does not require authentication nor authorization, so anyone can exploit it. It should nonetheless not be exploitable as it is highly recommended to bury Chall-Manager deep within the infrastructure due to its large capabilities, so no users could reach the system. ### Patches Patch has been implemented by [commit `1385bd8`](https://github.com/ctfer-io/chall-manager/commit/1385bd869142651146cd0b123085f91cec698636) and shipped in [`v0.1.4`](https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4). ### Workarounds No workaround exist. ### References N/A

References

External links from the advisory. They lead to third-party sites.