Description
Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. When decoding a scenario (i.e. a zip archive), the size of the decoded content is not checked, potentially leading to zip bombs decompression. 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 14042aa and shipped in v0.1.4.
Problem types
CWE-405: Asymmetric Resource Consumption (Amplification)
Product status
References
github.com/...anager/security/advisories/GHSA-r7fm-3pqm-ww5w
github.com/...ommit/14042aa66a577caee777e10fe09adcf2587d20dd
github.com/ctfer-io/chall-manager/releases/tag/v0.1.4