GitHub Advisoryadvisory · Go

GHSA-r7fm-3pqm-ww5w Chall-Manager's scenario decoding process does not check for zip bombs

HIGH Published 2025-07-10 Modified 2025-07-10 Official page ↗
Aliases
CVE-2025-53633
Ecosystem
Go
Packages
github.com/ctfer-io/chall-manager
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weaknesses
CWE-405, CWE-409
Reviewed
2025-07-10

Affected packages

• Go github.com/ctfer-io/chall-manager: < 0.1.4 → fixed in 0.1.4

Description

Impact 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. Patches Patch has been implemented by commit `14042aa` and shipped in `v0.1.4`. Workarounds No workaround exist. References N/A.

Related

Alias · CVE (1)

  • CVE-2025-53633 Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. vulnerability

Weakness · CWE (2)

  • CWE-405 Asymmetric Resource Consumption (Amplification) weakness
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) weakness

References