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OpenAdvisories
High · 8.8 Public exploit CVE-2025-53632 EUVD-2025-21069GHSA-3gv2-v3jx-r9fhGO-2025-3808

Chall-Manager's scenario decoding process does not check for zip slips

Published Jul 10, 2025 · Updated Jul 10, 2025 · Assigned by GitHub_M

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 path of the file to write is not checked, potentially leading to zip slips. 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 47d188f and shipped in v0.1.4.

Affected products

VendorProductAffectedFixed
ctfer-io chall-manager < 0.1.4 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Tumbleweed govulncheck-vulndb 0.0.20250730T213748-1.1 openSUSE-SU-2025:15405-1

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/ctfer-io/chall-manager < 0.1.4 0.1.4 GHSA-3gv2-v3jx-r9fh

Advisories 1

References