CVE-2025-53633— Chall-Manager's scenario decoding process does not check for zip bombs
Quick assessment
Affected
ctfer-io chall-manager
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Chall-Manager是CTFer.io开源的一个开源项目。 Chall-Manager 0.1.4之前版本存在安全漏洞，该漏洞源于解压zip文件时未检查内容大小，可能导致zip炸弹解压。
Possible ATT&CK Techniques 1 AI
T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-53633
Vulnerability Information
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Vulnerability Title
Chall-Manager's scenario decoding process does not check for zip bombs
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不对称的资源消耗(放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
Chall-Manager 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chall-Manager是CTFer.io开源的一个开源项目。 Chall-Manager 0.1.4之前版本存在安全漏洞，该漏洞源于解压zip文件时未检查内容大小，可能导致zip炸弹解压。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ctfer-io | chall-manager | < 0.1.4 | - |
|
II. Public POCs for CVE-2025-53633
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · ctfer-io · 2025-07-10 · 3 CVEs total
| CVE-2025-53632 | Chall-Manager's scenario decoding process does not check for zip slips | |
| CVE-2025-53634 | Chall-Manager's HTTP Gateway have no header check timeout leading to potential slow loris |
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V. Comments for CVE-2025-53633
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