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.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-ggmv-j932-q89q
Patch x_refsource_misc
https://github.com/ctfer-io/chall-manager/commit/1385bd869142651146cd0b123085f91cec698636
Release Notes x_refsource_misc
https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4
Scores
CVSS v3
7.5
EPSS
0.0016
EPSS Percentile
36.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (2)
ctfer-io/chall-manager
< 0.1.4
ctfer-io/chall-manager
0 - 0.1.4Go
Published
Jul 10, 2025
Tracked Since
Feb 18, 2026