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CVE-2023-46848— Squid: denial of service in ftp

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 9
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 6.4之前版本存在安全漏洞，该漏洞源于数字类型错误之间的转换不正确，容易受到针对FTP本机中继输入验证的拒绝服务攻击。

CVSS 8.6 · High EPSS 10.22% · P96

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-46848

Vulnerability Information
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Vulnerability Title
Squid: denial of service in ftp
Source: CVE Program / CVE List V5
Vulnerability Description
Squid is vulnerable to Denial of Service, where a remote attacker can perform DoS by sending ftp:// URLs in HTTP Request messages or constructing ftp:// URLs from FTP Native input.
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
数值类型间的不正确转换
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 6.4之前版本存在安全漏洞，该漏洞源于数字类型错误之间的转换不正确，容易受到针对FTP本机中继输入验证的拒绝服务攻击。
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
Red Hat Red Hat Enterprise Linux 9 7:5.5-5.el9_2.1 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 7:5.5-6.el9_3.1 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support 7:5.2-1.el9_0.3 ~ * cpe:/a:redhat:rhel_eus:9.0::appstream
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8

II. Public POCs for CVE-2023-46848

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7867 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2023-46848

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Vendor Advisories for CVE-2023-46848 (6)

IV. Related Vulnerabilities

Same weakness: CWE-681

V. Comments for CVE-2023-46848

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