Bug 1334246 – CVE-2016-4555 squid: SegFault from ESIInclude::Start

Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.

Bug 1334246 - (CVE-2016-4555) CVE-2016-4555 squid: SegFault from ESIInclude::Start

Summary:	CVE-2016-4555 squid: SegFault from ESIInclude::Start

Status:	CLOSED ERRATA

Aliases:	CVE-2016-4555

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=20160506,repor...
Keywords:	Security

Depends On:	1334251 1334491 1334492 1334499 1334500
Blocks:	1334247
	Show dependency tree / graph

Reported:	2016-05-09 05:15 EDT by Andrej Nemec
Modified:	2016-07-12 19:52 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	squid 3.5.18
Doc Type:	Bug Fix
Doc Text:	A NULL pointer dereference flaw was found in the way Squid processes ESI responses. If Squid was used as a reverse proxy or for TLS/HTTPS interception, a malicious server could use this flaw to crash the Squid worker process.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-06-09 08:43:38 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)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:1139	normal	SHIPPED_LIVE	Moderate: squid security update	2016-05-31 05:42:41 EDT
Red Hat Product Errata	RHSA-2016:1140	normal	SHIPPED_LIVE	Moderate: squid34 security update	2016-05-31 05:56:07 EDT

Groups: None (edit)

Description Andrej Nemec 2016-05-09 05:15:10 EDT

Due to incorrect pointer handling Squid is vulnerable to a denial of service attack when processing ESI responses.

External references:

http://www.squid-cache.org/Advisories/SQUID-2016_9.txt

Upstream fixes:

Squid 3.5:

http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_9.patch

Squid 3.4:

http://www.squid-cache.org/Versions/v3/3.4/changesets/SQUID-2016_9.patch

NOTE:
For For the other related CVE, CVE-2016-4556, see Bug 1334786

Comment 1 Andrej Nemec 2016-05-09 05:20:48 EDT

Created squid tracking bugs for this issue:

Affects: fedora-all [bug 1334251]

Comment 9 errata-xmlrpc 2016-05-31 01:43:24 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:1139 https://access.redhat.com/errata/RHSA-2016:1139

Comment 10 errata-xmlrpc 2016-05-31 01:57:06 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:1140 https://access.redhat.com/errata/RHSA-2016:1140

Comment 11 Fedora Update System 2016-07-12 16:27:36 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 12 Fedora Update System 2016-07-12 19:52:18 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.

Note You need to log in before you can comment on or make changes to this bug.