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Alerts This Week
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Red Hat Enterprise Linux 5 & 6 RHSA-2014:1148-01 Critical Squid Bug Fix

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Calendar Grey September 3, 2014
Scroller Redhat
Significant squid safety enhancement for Red Hat tackles severe concerns regarding proxy operations and DNS resolution.
An updated squid package that fixes two security issues is now available for Red Hat Enterprise Linux 5 and 6

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/articles/11258

Summary

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.
A flaw was found in the way Squid handled malformed HTTP Range headers. A remote attacker able to send HTTP requests to the Squid proxy could use this flaw to crash Squid. (CVE-2014-3609)
A buffer overflow flaw was found in Squid's DNS lookup module. A remote attacker able to send HTTP requests to the Squid proxy could use this flaw to crash Squid. (CVE-2013-4115)
Red Hat would like to thank the Squid project for reporting the CVE-2014-3609 issue. Upstream acknowledges Matthew Daley as the original reporter.
All Squid users are advised to upgrade to this updated package, which contains backported patches to correct these issues. After installing this update, the squid service will be restarted automatically.

Topics%20covered

Topics Covered

security advisory buffer overflow remote exploit red hat important squid DNS issue

References

https://access.redhat.com/security/cve/CVE-2013-4115 https://access.redhat.com/security/cve/CVE-2014-3609 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Desktop Workstation (v. 5 client):
Source: squid-2.6.STABLE21-7.el5_10.src.rpm
i386: squid-2.6.STABLE21-7.el5_10.i386.rpm squid-debuginfo-2.6.STABLE21-7.el5_10.i386.rpm
x86_64: squid-2.6.STABLE21-7.el5_10.x86_64.rpm squid-debuginfo-2.6.STABLE21-7.el5_10.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source: squid-2.6.STABLE21-7.el5_10.src.rpm
i386: squid-2.6.STABLE21-7.el5_10.i386.rpm squid-debuginfo-2.6.STABLE21-7.el5_10.i386.rpm
ia64: squid-2.6.STABLE21-7.el5_10.ia64.rpm squid-debuginfo-2.6.STABLE21-7.el5_10.ia64.rpm
ppc: squid-2.6.STABLE21-7.el5_10.ppc.rpm squid-debuginfo-2.6.STABLE21-7.el5_10.ppc.rpm
s390x: squid-2.6.STABLE21-7.el5_10.s390x.rpm squid-debuginfo-2.6.STABLE21-7.el5_10.s390x.rpm
x86_64: squid-2.6.STABLE21-7.el5_10.x86_64.rpm squid-debuginfo-2.6.STABLE21-7.el5_10.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source: squid-3.1.10-22.el6_5.src.rpm
i386: squid-3.1.10-22.el6_5.i686.rpm squid-debuginfo-3.1.10-22.el6_5.i686.rpm
ppc64: squid-3.1.10-22.el6_5.ppc64.rpm squid-debuginfo-3.1.10-22.el6_5.ppc64.rpm
s390x: squid-3.1.10-22.el6_5.s390x.rpm squid-debuginfo-3.1.10-22.el6_5.s390x.rpm
x86_64: squid-3.1.10-22.el6_5.x86_64.rpm squid-debuginfo-3.1.10-22.el6_5.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2014:1148-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2014:1148.html
Issue date: 2014-09-03

Topic

An updated squid package that fixes two security issues is now availablefor Red Hat Enterprise Linux 5 and 6.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory buffer overflow remote exploit red hat important squid DNS issue

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

983653 - CVE-2013-4115 squid: buffer overflow when processing overly long DNS names (SQUID-2013:2)

1134209 - CVE-2014-3609 squid: assertion failure in Range header processing (SQUID-2014:2)

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