Bug 1323594 – CVE-2016-3948 squid: denial of service issue in HTTP response processing

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Bug 1323594 - (CVE-2016-3948) CVE-2016-3948 squid: denial of service issue in HTTP response processing

Summary:	CVE-2016-3948 squid: denial of service issue in HTTP response processing

Status:	CLOSED ERRATA

Aliases:	CVE-2016-3948

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160401,repor...
Keywords:	Security

Depends On:	1322770 1323591
Blocks:	1323611
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Reported:	2016-04-04 03:50 EDT by Andrej Nemec
Modified:	2016-11-06 00:35 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	squid 3.5.16
Doc Type:	Bug Fix
Doc Text:	An incorrect boundary check was found in the way squid handled the Vary header in HTTP responses, which could lead to an assertion failure. A malicious HTTP server could use this flaw to crash squid using a specially crafted HTTP response.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-11-04 05:03:46 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:2600	normal	SHIPPED_LIVE	Moderate: squid security, bug fix, and enhancement update	2016-11-03 08:12:25 EDT

Groups: None (edit)

Description Andrej Nemec 2016-04-04 03:50:34 EDT

Due to incorrect bounds checking Squid is vulnerable to a denial of service attack when processing HTTP responses.

External references:

http://www.squid-cache.org/Advisories/SQUID-2016_4.txt

Upstream fix:

http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-14016.patch

References:

http://seclists.org/oss-sec/2016/q2/3

Comment 2 Cedric Buissart 2016-04-07 05:21:20 EDT

Statement:

Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. 

For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 4 Fedora Update System 2016-07-12 16:28:09 EDT

squid-3.5.19-2.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2016-07-12 19:52:51 EDT

squid-3.5.10-4.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 6 errata-xmlrpc 2016-11-03 17:17:19 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:2600 https://rhn.redhat.com/errata/RHSA-2016-2600.html

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