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Vulnerability · Published Nov 3, 2023 · Assigned by redhat

CVE-2023-46846Squid: request/response smuggling in http/1.1 and icap

Critical 9.3

In plain English

A critical-severity security flaw in squid. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 7.2% (higher than 94% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.3Critical
Exploit odds (30 days)7.2%top 5.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

SQUID is vulnerable to HTTP request smuggling, caused by chunked decoder lenience, allows a remote attacker to perform Request/Response smuggling past firewall and frontend security systems.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:6267
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:6267
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:7213
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:7213
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:6267
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:7213
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:7213
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:6267
AlmaLinux:8squid7:4.15-6.module_el8.8.0+3670+56cb3c8e.1.alma.1ALSA-2023:6267
AlmaLinux:8squid7:4.15-7.module_el8.9.0+3680+f9142978.1.alma.1ALSA-2023:7213
AlmaLinux:9squid7:5.5-5.el9_2.1ALSA-2023:6266
AlmaLinux:9squid7:5.5-6.el9_3.1ALSA-2023:6748
Alpine:v3.20squid6.4-r0ALPINE-CVE-2023-46846
Alpine:v3.21squid6.4-r0ALPINE-CVE-2023-46846
Alpine:v3.22squid6.4-r0ALPINE-CVE-2023-46846
Alpine:v3.23squid6.4-r0ALPINE-CVE-2023-46846
Alpine:v3.24squid6.4-r0ALPINE-CVE-2023-46846
Debian:12squid5.7-2+deb12u1DSA-5637-1
Debian:12squid5.7-2+deb12u1DEBIAN-CVE-2023-46846
Debian:13squid6.5-1DEBIAN-CVE-2023-46846
Debian:14squid6.5-1DEBIAN-CVE-2023-46846
Rocky Linux:8libecap0:1.0.1-2.module+el8.9.0+1437+df5ea8f0RLSA-2023:7213
Rocky Linux:8libecap0:1.0.1-2.module+el8.4.0+404+316a0dc5RLSA-2023:6267
Rocky Linux:8squid7:4.15-6.module+el8.8.0+1273+55f5b063RLSA-2023:6267
Rocky Linux:8squid7:4.15-7.module+el8.9.0+1568+6d4fd5d4.1RLSA-2023:7213
Rocky Linux:9squid7:5.5-5.el9_2.1RLSA-2023:6266
Ubuntu:22.04:LTSsquid5.7-0ubuntu0.22.04.2USN-6500-1
Ubuntu:22.04:LTSsquid5.7-0ubuntu0.22.04.2UBUNTU-CVE-2023-46846
Ubuntu:24.04:LTSsquid6.1-2ubuntu2UBUNTU-CVE-2023-46846

Affected products (as reported)

VendorProductVersions
squid 2.6 – before 6.4
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support see references
Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 6 see references

Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

References