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CVE

CVE-2023-5824

A flaw was found in Squid. The limits applied for validation of HTTP response headers are applied before caching. Howeve

A flaw was found in Squid. The limits applied for validation of HTTP response headers are applied before caching. However, Squid may grow a cached HTTP response header beyond the configured maximum size, causing a stall or crash of the worker process when a large header is retrieved from the disk cache, resulting in a denial of service.

HIGH · CVSS 7.5 EPSS 0.01879
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-755Improper Handling of Exceptional Conditions
CWE-755Improper Handling of Exceptional Conditions
▤

Affected Products & Versions

2
squid-cache squid< 6.4
redhat enterprise linuxall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Nov 2023 · 08:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

12
msrcCVE-2023-5824
rhsaRHSA-2024:0072Important
rhsaRHSA-2023:7668Important
rhsaRHSA-2024:1153Important
rhsaRHSA-2024:0771Important
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2023-5824Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2245914Issue Tracking
https://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html
https://security.netapp.com/advisory/ntap-20231130-0003/
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