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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Ctfer-io
  • Chall-manager

Configuration 1 [-]

cpe:2.3:a:ctfer-io:chall-manager:*:*:*:*:*:*:*:*

No data.

References
Link Providers
https://github.com/ctfer-io/chall-manager/commit/14042aa66a577caee777e10fe09adcf2587d20dd cve-icon cve-icon
https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4 cve-icon cve-icon
https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-r7fm-3pqm-ww5w cve-icon cve-icon
History

Thu, 14 Aug 2025 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Ctfer-io
Ctfer-io chall-manager
CPEs cpe:2.3:a:ctfer-io:chall-manager:*:*:*:*:*:*:*:*
Vendors & Products Ctfer-io
Ctfer-io chall-manager
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00075}

 epss

{'score': 0.00089}

Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00075}

Thu, 10 Jul 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 10 Jul 2025 19:45:00 +0000

Type Values Removed Values Added
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.
Title Chall-Manager's scenario decoding process does not check for zip bombs
Weaknesses CWE-405
References
Metrics cvssV4_0

{'score': 8.7, '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-07-10T19:38:19.564Z

Updated: 2025-07-10T20:02:40.218Z

Reserved: 2025-07-07T14:20:38.389Z

Link: CVE-2025-53633

cve-icon Vulnrichment

Updated: 2025-07-10T20:02:37.186Z

cve-icon NVD

Status : Analyzed

Published: 2025-07-10T20:15:27.823

Modified: 2025-08-14T20:44:46.470

Link: CVE-2025-53633

cve-icon Redhat

No data.