CVE-2023-5824

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CVE-2023-5824

Summary: Squid: dos against http and https

Details: 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.

References: https://access.redhat.com/downloads/content/package-browser/, https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html, https://access.redhat.com/errata/RHSA-2023:7465, https://access.redhat.com/errata/RHSA-2023:7668, https://access.redhat.com/errata/RHSA-2024:0072, https://access.redhat.com/errata/RHSA-2024:0397, https://access.redhat.com/errata/RHSA-2024:0771, https://access.redhat.com/errata/RHSA-2024:0772, https://access.redhat.com/errata/RHSA-2024:0773, https://access.redhat.com/errata/RHSA-2024:1153, https://access.redhat.com/security/cve/CVE-2023-5824, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5824.json, https://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255, https://nvd.nist.gov/vuln/detail/CVE-2023-5824, https://security.netapp.com/advisory/ntap-20231130-0003/, https://bugzilla.redhat.com/show_bug.cgi?id=2245914