REDHAT-BUG-1334786
First published: Tue May 10 2016(Updated: )
Due to incorrect reference counting Squid is vulnerable to a denial of service attack when processing ESI responses. External references: <a href="http://www.squid-cache.org/Advisories/SQUID-2016_9.txt">http://www.squid-cache.org/Advisories/SQUID-2016_9.txt</a> Upstream fixes: Squid 3.5: <a href="http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_9.patch">http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_9.patch</a> Squid 3.4: <a href="http://www.squid-cache.org/Versions/v3/3.4/changesets/SQUID-2016_9.patch">http://www.squid-cache.org/Versions/v3/3.4/changesets/SQUID-2016_9.patch</a> NOTE: For the other related CVE, <a href="https://access.redhat.com/security/cve/CVE-2016-4555">CVE-2016-4555</a>, see <a class="bz_bug_link bz_status_CLOSED bz_closed bz_public " title="CLOSED ERRATA - CVE-2016-4555 squid: SegFault from ESIInclude::Start" href="show_bug.cgi?id=1334246">Bug 1334246</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Squid Web Proxy Cache | >=3.4>=3.5 |
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Reference Links
- http://www.squid-cache.org/Advisories/SQUID-2016_9.txt
- http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_9.patch
- http://www.squid-cache.org/Versions/v3/3.4/changesets/SQUID-2016_9.patch
- https://access.redhat.com/security/cve/CVE-2016-4555
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1334246
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1334787
- https://access.redhat.com/errata/RHSA-2016:1139
- https://access.redhat.com/errata/RHSA-2016:1140
- https://access.redhat.com/errata/RHSA-2016:1138
- https://bugzilla.redhat.com/show_bug.cgi?id=1334786
Frequently Asked Questions
What is the severity of REDHAT-BUG-1334786?
REDHAT-BUG-1334786 has a high severity due to its potential to cause a denial of service attack.
How do I fix REDHAT-BUG-1334786?
To fix REDHAT-BUG-1334786, update to Squid version 3.5 or later.
Which versions of Squid are affected by REDHAT-BUG-1334786?
REDHAT-BUG-1334786 affects Squid versions 3.4 and 3.5.
What type of vulnerability is REDHAT-BUG-1334786?
REDHAT-BUG-1334786 is a denial of service vulnerability due to incorrect reference counting.
Where can I find more information about REDHAT-BUG-1334786?
More information about REDHAT-BUG-1334786 can be found in the Squid advisory.
- agent/references
- agent/type
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2016-4556
- agent/last-modified-date
- agent/first-publish-date
- agent/source
- agent/severity
- agent/description
- agent/event
- agent/tags
- agent/softwarecombine
- agent/guess-ai
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/squid
- canonical/squid web proxy cache