CVE-2023-5824
Squid: dos against http and https
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-755 |
| Vendor | red hat |
| Product | red hat enterprise linux 8 |
| Published | Nov 3, 2023 |
| Last Updated | Nov 6, 2025 |
Stay Ahead of the Next One
Get instant alerts for red hat red hat enterprise linux 8
Be the first to know when new high vulnerabilities affecting red hat red hat enterprise linux 8 are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Telecommunications Update Service
All versions affected Red Hat / Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2023:7465 access.redhat.com: https://access.redhat.com/errata/RHSA-2023:7668 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0072 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0397 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0771 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0772 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0773 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:1153 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-5824 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2245914 github.com: https://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255 security.netapp.com: https://security.netapp.com/advisory/ntap-20231130-0003/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/09/msg00027.html