Bug 1334246 (CVE-2016-4555) - CVE-2016-4555 squid: SegFault from ESIInclude::Start
Summary: CVE-2016-4555 squid: SegFault from ESIInclude::Start
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-4555
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1334251 1334491 1334492 1334499 1334500
Blocks: 1334247
TreeView+ depends on / blocked
 
Reported: 2016-05-09 09:15 UTC by Andrej Nemec
Modified: 2021-02-17 03:54 UTC (History)
6 users (show)

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.
Clone Of:
Environment:
Last Closed: 2016-06-09 12:43:38 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:1139 0 normal SHIPPED_LIVE Moderate: squid security update 2016-05-31 09:42:41 UTC
Red Hat Product Errata RHSA-2016:1140 0 normal SHIPPED_LIVE Moderate: squid34 security update 2016-05-31 09:56:07 UTC

Description Andrej Nemec 2016-05-09 09:15:10 UTC 
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 09:20:48 UTC 
Created squid tracking bugs for this issue:

Affects: fedora-all [bug 1334251]
Comment 9 errata-xmlrpc 2016-05-31 05:43:24 UTC 
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 05:57:06 UTC 
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 20:27:36 UTC 
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 23:52:18 UTC 
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.
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