CVE record · CVE-2023-5824

Squid: dos against http and https

CVSS 7.5 HighEPSS 0.033 · 88th percentile

Published by the CVE Program (CNA: redhat) at 3 Nov 2023, 07:56 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 8 Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8090020231130092412.a75119d5 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8020020240122164331.4cda2c84 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Telecommunications Update Service Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8020020240122164331.4cda2c84 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8020020240122164331.4cda2c84 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8040020240122165847.522a0ee4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Telecommunications Update Service Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8040020240122165847.522a0ee4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8040020240122165847.522a0ee4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8060020231222131040.ad008a3a to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support Package name: squid:4 https://access.redhat.com/downloads/content/package-browser/	unaffected 8080020231222130009.63b34585 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9 Package name: squid https://access.redhat.com/downloads/content/package-browser/	unaffected 7:5.5-6.el9_3.2 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.0 Extended Update Support Package name: squid https://access.redhat.com/downloads/content/package-browser/	unaffected 7:5.2-1.el9_0.4 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 9.2 Extended Update Support Package name: squid https://access.redhat.com/downloads/content/package-browser/	unaffected 7:5.5-5.el9_2.3 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 6 Package name: squid https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Enterprise Linux 7 Package name: squid https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected

Identifiers: CVE-2023-5824
CNA: redhat
Weakness (CWE): CWE-755
Tags: Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8.2 Advanced Update Support
Red Hat Enterprise Linux 8.2 Telecommunications Update Service
Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Red Hat Enterprise Linux 8.4 Telecommunications Update Service
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
Red Hat Enterprise Linux 8.6 Extended Update Support
CWE-755
Published: 3 Nov 2023
Updated: 4 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.5	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CNA (redhat)

CISA KEV Not listed.
EPSS 0.033, the 88th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

3 Nov 2023, 07:56 UTC Confirmed by the CVE List
3 Nov 2023, 08:15 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2023:7465 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2023:7668 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0072 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0397 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0771 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0772 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:0773 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2024:1153 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2023-5824 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2245914 issue-trackingredhat
github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.