Bug 1962595 (CVE-2021-31806)

Summary:	CVE-2021-31806 squid: improper input validation in HTTP Range header
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	anon.amish, code, icesalov, jonathansteffan, luhliari, mcascell, naresh.sukhija_ext
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	squid 4.15, squid 5.0.6	Doc Type:	If docs needed, set a value
Doc Text:	An incorrect input validation flaw was found in Squid, where it is vulnerable to a denial of service attack against all clients using the proxy. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 18:55:15 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1962596, 1963385, 1963386
Bug Blocks:	1959539

Description Marian Rehak 2021-05-20 10:43:10 UTC

Due to an incorrect input validation bug Squid is vulnerable to a Denial of Service attack against all clients using the proxy.

External Reference:

https://github.com/squid-cache/squid/security/advisories/GHSA-pxwq-f3qr-w2xf

Comment 1 Marian Rehak 2021-05-20 10:43:36 UTC

Created squid tracking bugs for this issue:

Affects: fedora-all [bug 1962596]

Comment 3 Mauro Matteo Cascella 2021-05-24 07:51:00 UTC

Upstream pull request:
https://github.com/squid-cache/squid/pull/790

Upstream commits:
https://github.com/squid-cache/squid/commit/7024fb734a59409889e53df2257b3fc817809fb4 [master]
https://github.com/squid-cache/squid/commit/6bf66733c122804fada7f5839ef5f3b57e57591c [v5]
https://github.com/squid-cache/squid/commit/e7cf864f938f24eea8af0692c04d16790983c823 [v4]

Comment 6 errata-xmlrpc 2021-11-09 18:05:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4292 https://access.redhat.com/errata/RHSA-2021:4292

Comment 7 Product Security DevOps Team 2021-11-09 18:55:13 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-31806