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CVE Vulnerabilities

CVE-2023-50269

Uncontrolled Recursion

Published: Dec 14, 2023 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2023-50269
CWEhttps://cwe.mitre.org/data/definitions/674.html

Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squids patch archives.

Weakness

The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Affected Software

NameVendorStart VersionEnd Version
SquidSquid-cache3.1 (including)5.9 (including)
SquidSquid-cache6.0.1 (including)6.5 (including)
SquidSquid-cache2.6 (including)2.6 (including)
SquidSquid-cache2.7 (including)2.7 (including)
SquidSquid-cache2.7-stable1 (including)2.7-stable1 (including)
SquidSquid-cache2.7-stable2 (including)2.7-stable2 (including)
SquidSquid-cache2.7-stable3 (including)2.7-stable3 (including)
SquidSquid-cache2.7-stable4 (including)2.7-stable4 (including)
SquidSquid-cache2.7-stable5 (including)2.7-stable5 (including)
SquidSquid-cache2.7-stable6 (including)2.7-stable6 (including)
SquidSquid-cache2.7-stable7 (including)2.7-stable7 (including)
SquidSquid-cache2.7-stable8 (including)2.7-stable8 (including)
SquidSquid-cache2.7-stable9 (including)2.7-stable9 (including)
Red Hat Enterprise Linux 7RedHatsquid-7:3.5.20-17.el7_9.10*
Red Hat Enterprise Linux 8RedHatsquid:4-8090020240314114525.a75119d5*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatsquid:4-8020020240122164331.4cda2c84*
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRedHatsquid:4-8020020240122164331.4cda2c84*
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRedHatsquid:4-8020020240122164331.4cda2c84*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatsquid:4-8040020240122165847.522a0ee4*
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRedHatsquid:4-8040020240122165847.522a0ee4*
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRedHatsquid:4-8040020240122165847.522a0ee4*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatsquid:4-8060020231222131040.ad008a3a*
Red Hat Enterprise Linux 8.8 Extended Update SupportRedHatsquid:4-8080020231222130009.63b34585*
Red Hat Enterprise Linux 9RedHatsquid-7:5.5-6.el9_3.8*
Red Hat Enterprise Linux 9.0 Extended Update SupportRedHatsquid-7:5.2-1.el9_0.4*
Red Hat Enterprise Linux 9.2 Extended Update SupportRedHatsquid-7:5.5-5.el9_2.4*
SquidUbuntubionic*
SquidUbuntudevel*
SquidUbuntuesm-infra/focal*
SquidUbuntufocal*
SquidUbuntujammy*
SquidUbuntulunar*
SquidUbuntumantic*
SquidUbuntunoble*
SquidUbuntutrusty*
SquidUbuntuxenial*
Squid3Ubuntubionic*
Squid3Ubuntuesm-infra/bionic*
Squid3Ubuntuesm-infra/xenial*
Squid3Ubuntutrusty*
Squid3Ubuntuxenial*

Potential Mitigations

References

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