Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ctfer-Io | Chall-Manager | < 0.1.4 |
Related Weaknesses (CWE)
References
- https://github.com/ctfer-io/chall-manager/commit/1385bd869142651146cd0b123085f91Patch
- https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4Release Notes
- https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-ggmv-j932-q89Vendor Advisory
FAQ
What is CVE-2025-53634?
CVE-2025-53634 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 cau...
How severe is CVE-2025-53634?
CVE-2025-53634 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-53634?
Check the references section above for vendor advisories and patch information. Affected products include: Ctfer-Io Chall-Manager.