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CVE-2024-25111— SQUID-2024:1 Denial of Service in HTTP Chunked Decoding

Quick assessment

Affected
squid-cache squid
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Squid是一套代理服务器和Web缓存服务器软件。该软件提供缓存万维网、过滤流量、代理上网等功能。 Squid 3.5.27至6.8之前版本存在安全漏洞，该漏洞源于存在递归错误，导致容易受到针对HTTP Chunked解码器的拒绝服务攻击。

CVSS 8.6 · High EPSS 65.25% · P99

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2024-25111

Vulnerability Information
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Vulnerability Title
SQUID-2024:1 Denial of Service in HTTP Chunked Decoding
Source: CVE Program / CVE List V5
Vulnerability Description
Squid is a web proxy cache. Starting in version 3.5.27 and prior to version 6.8, Squid may be vulnerable to a Denial of Service attack against HTTP Chunked decoder due to an uncontrolled recursion bug. This problem allows a remote attacker to cause Denial of Service when sending a crafted, chunked, encoded HTTP Message. This bug is fixed in Squid version 6.8. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. There is no workaround for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
Squid 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Squid是一套代理服务器和Web缓存服务器软件。该软件提供缓存万维网、过滤流量、代理上网等功能。 Squid 3.5.27至6.8之前版本存在安全漏洞，该漏洞源于存在递归错误，导致容易受到针对HTTP Chunked解码器的拒绝服务攻击。
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
squid-cache squid >= 3.5.27, < 6.8 -

II. Public POCs for CVE-2024-25111

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7994 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Full executable POC code
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III. Intelligence Information for CVE-2024-25111

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Vendor Advisories for CVE-2024-25111 (2)

Mailing List Discussions for CVE-2024-25111 (2)

Other References for CVE-2024-25111 (1)

IV. Related Vulnerabilities

Same product: squid
Same vendor: squid-cache
Same weakness: CWE-674

V. Comments for CVE-2024-25111

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