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-2016-1573-01 Moderate Squid Overflow

red hat
Calendar Grey August 4, 2016
Scroller Redhat
A minor security patch for squid in Red Hat Enterprise Linux 6 fixes a memory overflow flaw.
An update for squid is now available for Red Hat Enterprise Linux 6

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, the squid service will be restarted automatically.

Summary

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.
Security Fix(es):
* It was found that the fix for CVE-2016-4051 released via RHSA-2016:1138 did not properly prevent the stack overflow in the munge_other_line() function. A remote attacker could send specially crafted data to the Squid proxy, which would exploit the cachemgr CGI utility, possibly triggering execution of arbitrary code. (CVE-2016-5408)
Red Hat would like to thank Amos Jeffries (Squid) for reporting this issue.

Topics%20covered

Topics Covered

security advisory security update buffer overflow Red Hat Enterprise Linux moderate impact squid

References

https://access.redhat.com/security/cve/CVE-2016-5408 https://access.redhat.com/errata/RHSA-2016:1138.html https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Server (v. 6):
Source: squid-3.1.23-16.el6_8.6.src.rpm
i386: squid-3.1.23-16.el6_8.6.i686.rpm squid-debuginfo-3.1.23-16.el6_8.6.i686.rpm
ppc64: squid-3.1.23-16.el6_8.6.ppc64.rpm squid-debuginfo-3.1.23-16.el6_8.6.ppc64.rpm
s390x: squid-3.1.23-16.el6_8.6.s390x.rpm squid-debuginfo-3.1.23-16.el6_8.6.s390x.rpm
x86_64: squid-3.1.23-16.el6_8.6.x86_64.rpm squid-debuginfo-3.1.23-16.el6_8.6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: squid-3.1.23-16.el6_8.6.src.rpm
i386: squid-3.1.23-16.el6_8.6.i686.rpm squid-debuginfo-3.1.23-16.el6_8.6.i686.rpm
x86_64: squid-3.1.23-16.el6_8.6.x86_64.rpm squid-debuginfo-3.1.23-16.el6_8.6.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2016:1573-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2016:1573.html
Issue date: 2016-08-04

Topic

An update for squid is now available for Red Hat Enterprise Linux 6.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update buffer overflow Red Hat Enterprise Linux moderate impact squid

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

1359203 - CVE-2016-5408 squid: Buffer overflow vulnerability in cachemgr.cgi tool

Get the latest News and Insights

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