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CVE-2023-49288

Denial of Service in HTTP Collapsed Forwarding in Squid

Published: Dec 4, 2023Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-416
8.6HIGH
NVD MITRE
EPSS Score
4.8%
Top 9.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Affected versions of squid are subject to a a Use-After-Free bug which can lead to a Denial of Service attack via collapsed forwarding. All versions of Squid from 3.5 up to and including 5.9 configured with "collapsed_forwarding on" are vulnerable. Configurations with "collapsed_forwarding off" or without a "collapsed_forwarding" directive are not vulnerable. This bug is fixed by Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should remove all collapsed_forwarding lines from their squid.conf.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-416

Affected Products

squidsquid-cache
On-premNetwork Device
Networking Infrastructure / load-balancer-proxy
Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
Альт 8 СПАО «ИВК»
On-premOS
Operating Systems / linux-distro
РОСА ХРОМАО «НТЦ ИТ РОСА»
On-prem
Operating Systems / linux-distro
SquidSquid Software Foundation
On-premNetwork Device
Networking Infrastructure / load-balancer-proxy
squid-cacheoss-projectNetworking Infrastructureaka squid, squid cache
red hat inc.commercialUSOperating Systemsaka red hat
ао «ивк»commercialRUOperating Systemsaka ivk
ао «нтц ит роса»commercialRUOperating Systems
squid software foundationoss-projectNetworking Infrastructure

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://github.com/squid-cache/squid/security/advisories/GHSA-rj5h-46j6-q2g5
github.com
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/
lists.fedoraproject.org
and 5 more references View all →

Timeline

Published
Dec 4, 2023
Last Updated
Nov 21, 2024

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