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Vulnerability Details :

CVE-2025-53633

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-10 Jul, 2025 | 19:38
Updated At-10 Jul, 2025 | 20:02
Rejected At-
Credits

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

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:10 Jul, 2025 | 19:38
Updated At:10 Jul, 2025 | 20:02
Rejected At:
▼CVE Numbering Authority (CNA)
Chall-Manager's scenario decoding process does not check for zip bombs

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.

Affected Products
Vendor
ctfer-io
Product
chall-manager
Versions
Affected
  • < 0.1.4
Problem Types
TypeCWE IDDescription
CWECWE-405CWE-405: Asymmetric Resource Consumption (Amplification)
Type: CWE
CWE ID: CWE-405
Description: CWE-405: Asymmetric Resource Consumption (Amplification)
Metrics
VersionBase scoreBase severityVector
4.08.7HIGH
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
Version: 4.0
Base score: 8.7
Base severity: HIGH
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-r7fm-3pqm-ww5w
x_refsource_CONFIRM
https://github.com/ctfer-io/chall-manager/commit/14042aa66a577caee777e10fe09adcf2587d20dd
x_refsource_MISC
https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4
x_refsource_MISC
Hyperlink: https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-r7fm-3pqm-ww5w
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/ctfer-io/chall-manager/commit/14042aa66a577caee777e10fe09adcf2587d20dd
Resource:
x_refsource_MISC
Hyperlink: https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:10 Jul, 2025 | 20:15
Updated At:14 Aug, 2025 | 20:44

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.08.7HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 4.0
Base score: 8.7
Base severity: HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches
ctfer-io
ctfer-io
>>chall-manager>>Versions before 0.1.4(exclusive)
cpe:2.3:a:ctfer-io:chall-manager:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-405Primarysecurity-advisories@github.com
CWE ID: CWE-405
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/ctfer-io/chall-manager/commit/14042aa66a577caee777e10fe09adcf2587d20ddsecurity-advisories@github.com
Patch
https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4security-advisories@github.com
Release Notes
https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-r7fm-3pqm-ww5wsecurity-advisories@github.com
Vendor Advisory
Hyperlink: https://github.com/ctfer-io/chall-manager/commit/14042aa66a577caee777e10fe09adcf2587d20dd
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/ctfer-io/chall-manager/releases/tag/v0.1.4
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/ctfer-io/chall-manager/security/advisories/GHSA-r7fm-3pqm-ww5w
Source: security-advisories@github.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

Similar CVEs

1Records found
CVE-2025-53634
Matching Score-8
Assigner-GitHub, Inc.
ShareView Details
Matching Score-8
Assigner-GitHub, Inc.
CVSS Score-8.7||HIGH
EPSS-0.14% / 35.20%
||
7 Day CHG~0.00%
Published-10 Jul, 2025 | 19:39
Updated-14 Aug, 2025 | 20:41
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Chall-Manager's HTTP Gateway have no header check timeout leading to potential slow loris attacks

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.

Action-Not Available
Vendor-ctfer-ioctfer-io
Product-chall-managerchall-manager
CWE ID-CWE-770
Allocation of Resources Without Limits or Throttling
Details not found