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CVE-2023-46847— Squid: denial of service in http digest authentication

Quick assessment

Affected
CVE-2023-46847
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，该漏洞源于缓冲区溢出，容易受到HTTP服务攻击。

CVSS 8.6 · High EPSS 88.35% · P100

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 19

VendorProduct Version RangeStatus
None None 3.2.0.1< 6.4 affected
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support 7:3.4.14-15.el6_10.1< * unaffected
7:3.1.23-24.el6_10.1< * unaffected
Red Hat Red Hat Enterprise Linux 7 7:3.5.20-17.el7_9.9< * unaffected
Red Hat Red Hat Enterprise Linux 7.6 Advanced Update Support 7:3.5.20-12.el7_6.2< * unaffected
Red Hat Red Hat Enterprise Linux 7.7 Advanced Update Support 7:3.5.20-13.el7_7.1< * unaffected
Red Hat Red Hat Enterprise Linux 8 8080020231030214932.63b34585< * unaffected
8090020231030224841.a75119d5< * unaffected
Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions 8010020231101141358.c27ad7f8< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 8020020231101135052.4cda2c84< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service 8020020231101135052.4cda2c84< * unaffected
Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions 8020020231101135052.4cda2c84< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 8040020231101101624.522a0ee4< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service 8040020231101101624.522a0ee4< * unaffected
Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions 8040020231101101624.522a0ee4< * unaffected
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support 8060020231031165747.ad008a3a< * unaffected
Red Hat Red Hat Enterprise Linux 9 7:5.5-5.el9_2.1< * unaffected
7:5.5-6.el9_3.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support 7:5.2-1.el9_0.3< * unaffected

I. Basic Information for CVE-2023-46847

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Squid: denial of service in http digest authentication
Source: CVE Program / CVE List V5
Vulnerability Description
Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
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，该漏洞源于缓冲区溢出，容易受到HTTP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
- - 3.2.0.1 ~ 6.4 -
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support 7:3.4.14-15.el6_10.1 ~ * cpe:/o:redhat:rhel_els:6
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support 7:3.1.23-24.el6_10.1 ~ * cpe:/o:redhat:rhel_els:6
Red Hat Red Hat Enterprise Linux 7 7:3.5.20-17.el7_9.9 ~ * cpe:/o:redhat:enterprise_linux:7::server
Red Hat Red Hat Enterprise Linux 7.6 Advanced Update Support 7:3.5.20-12.el7_6.2 ~ * cpe:/o:redhat:rhel_aus:7.6::server
Red Hat Red Hat Enterprise Linux 7.7 Advanced Update Support 7:3.5.20-13.el7_7.1 ~ * cpe:/o:redhat:rhel_aus:7.7::server
Red Hat Red Hat Enterprise Linux 8 8080020231030214932.63b34585 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8 8090020231030224841.a75119d5 ~ * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions 8010020231101141358.c27ad7f8 ~ * cpe:/a:redhat:rhel_e4s:8.1::appstream
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support 8020020231101135052.4cda2c84 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service 8020020231101135052.4cda2c84 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions 8020020231101135052.4cda2c84 ~ * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 8040020231101101624.522a0ee4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service 8040020231101101624.522a0ee4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions 8040020231101101624.522a0ee4 ~ * cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support 8060020231031165747.ad008a3a ~ * cpe:/a:redhat:rhel_eus:8.6::appstream
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

II. Public POCs for CVE-2023-46847

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10636 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-2023-46847

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Vendor Advisories for CVE-2023-46847 (17)

IV. Related Vulnerabilities

Same weakness: CWE-120

V. Comments for CVE-2023-46847

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