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7.5 High

CVE-2023-5824 Squid: dos against http and https

Description

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.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Privileges required
None
Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 8 8090020231130092412 earliest → < 8090020231130092412.a75119d5 8090020231130092412.a75119d5
Red Hat Enterprise Linux 8.2 Advanced Update Support 8020020240122164331.4 earliest → < 8020020240122164331.4cda2c84 8020020240122164331.4cda2c84
Red Hat Enterprise Linux 8.2 Telecommunications Update Service 8020020240122164331.4 earliest → < 8020020240122164331.4cda2c84 8020020240122164331.4cda2c84
Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions 8020020240122164331.4 earliest → < 8020020240122164331.4cda2c84 8020020240122164331.4cda2c84
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support 8040020240122165847.522 earliest → < 8040020240122165847.522a0ee4 8040020240122165847.522a0ee4
Red Hat Enterprise Linux 8.4 Telecommunications Update Service 8040020240122165847.522 earliest → < 8040020240122165847.522a0ee4 8040020240122165847.522a0ee4
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions 8040020240122165847.522 earliest → < 8040020240122165847.522a0ee4 8040020240122165847.522a0ee4
Red Hat Enterprise Linux 8.6 Extended Update Support 8060020231222131040 earliest → < 8060020231222131040.ad008a3a 8060020231222131040.ad008a3a
Red Hat Enterprise Linux 8.8 Extended Update Support 8080020231222130009.63 earliest → < 8080020231222130009.63b34585 8080020231222130009.63b34585
Show the 5 other branches
Product Affected versions Fixed in
Red Hat Enterprise Linux 9 Versions not published
Red Hat Enterprise Linux 9.0 Extended Update Support Versions not published
Red Hat Enterprise Linux 9.2 Extended Update Support Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published

References

Timeline

  1. Published
  2. Last modified

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