Vulnerability Monitor

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CVE-2025-53634

Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. The HTTP Gateway processes headers, but with no timeout set. With a slow loris 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. Patch has been implemented by commit 1385bd8 and shipped in v0.1.4.

Published

2025-07-10T20:15:27.987

Last Modified

2025-08-14T20:41:40.660

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses

Type: Primary
CWE-770

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ctfer-io	chall-manager	< 0.1.4	Yes

References

https://github.com/ctfer-io/chall-manager/commit/1385bd869142651146cd0b123085f91cec698636 Patch ([email protected])
https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4 Release Notes ([email protected])
https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-ggmv-j932-q89q Vendor Advisory ([email protected])