Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 461
Alerts This Week
Warning Icon 1 461

Red Hat Enterprise Linux 6 RHSA-2011-1293-01 Messaging: Squid Bug Fix

red hat
Calendar Grey September 14, 2011
Scroller Redhat
A recent squid security patch for Red Hat Enterprise Linux mitigates a critical buffer overflow vulnerability related to Gopher reply interpretation.
An updated squid package that fixes one security issue is now available for Red Hat Enterprise Linux 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/kb/docs/DOC-11259

Summary

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.
A buffer overflow flaw was found in the way Squid parsed replies from remote Gopher servers. A remote user allowed to send Gopher requests to a Squid proxy could possibly use this flaw to cause the squid child process to crash or execute arbitrary code with the privileges of the squid user, by making Squid perform a request to an attacker-controlled Gopher server. (CVE-2011-3205)
Users of squid should upgrade to this updated package, which contains a backported patch to correct this issue. After installing this update, the squid service will be restarted automatically.

Topics%20covered

Topics Covered

security advisory buffer overflow Red Hat Enterprise Linux squid update Gopher server

References

https://access.redhat.com/security/cve/CVE-2011-3205 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Server (v. 6):
Source:
i386: squid-3.1.10-1.el6_1.1.i686.rpm squid-debuginfo-3.1.10-1.el6_1.1.i686.rpm
ppc64: squid-3.1.10-1.el6_1.1.ppc64.rpm squid-debuginfo-3.1.10-1.el6_1.1.ppc64.rpm
s390x: squid-3.1.10-1.el6_1.1.s390x.rpm squid-debuginfo-3.1.10-1.el6_1.1.s390x.rpm
x86_64: squid-3.1.10-1.el6_1.1.x86_64.rpm squid-debuginfo-3.1.10-1.el6_1.1.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
i386: squid-3.1.10-1.el6_1.1.i686.rpm squid-debuginfo-3.1.10-1.el6_1.1.i686.rpm
x86_64: squid-3.1.10-1.el6_1.1.x86_64.rpm squid-debuginfo-3.1.10-1.el6_1.1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package


Advisory ID: RHSA-2011:1293-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1293.html
Issue date: 2011-09-14

Topic

An updated squid package that fixes one security issue is now available forRed Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory buffer overflow Red Hat Enterprise Linux squid update Gopher server

Relevant Releases Architectures

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

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

Bugs Fixed

734583 - CVE-2011-3205 squid: buffer overflow flaw in Squid's Gopher reply parser (SQUID-2011:3)

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.