CVE-2023-46846

Squid: request/response smuggling in http/1.1 and icap

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.

Category

9.3
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 9.62% Top 10%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory github.com
Affected: Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions
Affected: Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support
Affected: Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service
Affected: Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
Affected: Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Affected: Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service
Affected: Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
Affected: Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 6
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2023:6266 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6267 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6268 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6748 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6801 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6803 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6804 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:6810 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:7213 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2024:11049 vendor advisory
https://access.redhat.com/security/cve/CVE-2023-46846 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2245910 third party advisory issue tracking
https://github.com/squid-cache/squid/security/advisories/GHSA-j83v-w3p4-5cqh vendor advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00003.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00008.html
https://security.netapp.com/advisory/ntap-20231130-0002/

Frequently Asked Questions

What is the severity of CVE-2023-46846?
CVE-2023-46846 has been scored as a critical severity vulnerability.
How to fix CVE-2023-46846?
To fix CVE-2023-46846, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-46846 being actively exploited in the wild?
It is possible that CVE-2023-46846 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~10% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-46846?
CVE-2023-46846 affects Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions, Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service, Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions, Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 6.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.