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Red Hat: RHSA-2015-2378 Moderate: Squid SSL Issue (CVE-2015-3455)

red hat
Calendar Grey November 19, 2015
Scroller Redhat
Recent patches for squid packages address a significant security flaw and fix several issues in Red Hat Enterprise Linux 7.
Updated squid packages that fix one security issue and two bugs are now available for Red Hat Enterprise Linux 7

Solution

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

For details on how to apply this update, refer to:

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.
It was found that Squid configured with client-first SSL-bump did not correctly validate X.509 server certificate host name fields. A man-in-the-middle attacker could use this flaw to spoof a Squid server using a specially crafted X.509 certificate. (CVE-2015-3455)
This update fixes the following bugs:
* Previously, the squid process did not handle file descriptors correctly when receiving Simple Network Management Protocol (SNMP) requests. As a consequence, the process gradually accumulated open file descriptors. This bug has been fixed and squid now handles SNMP requests correctly, closing file descriptors when necessary. (BZ#1198778)
* Under high system load, the squid process sometimes terminated unexpectedly with a segmentation fault during reboot. This update provides better memory handling during reboot, thus fixing this bug. (BZ#1225640)
Users of squid are advised to upgrade to these updated packages, which fix these bugs. After installing this update, the squid service will be restarted automatically.

Topics%20covered

Topics Covered

security advisory bug fix security fix Red Hat Enterprise Linux moderate impact man-in-the-middle squid issue

References

https://access.redhat.com/security/cve/CVE-2015-3455 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Server (v. 7):
Source: squid-3.3.8-26.el7.src.rpm
aarch64: squid-3.3.8-26.el7.aarch64.rpm squid-debuginfo-3.3.8-26.el7.aarch64.rpm
ppc64: squid-3.3.8-26.el7.ppc64.rpm squid-debuginfo-3.3.8-26.el7.ppc64.rpm
ppc64le: squid-3.3.8-26.el7.ppc64le.rpm squid-debuginfo-3.3.8-26.el7.ppc64le.rpm
s390x: squid-3.3.8-26.el7.s390x.rpm squid-debuginfo-3.3.8-26.el7.s390x.rpm
x86_64: squid-3.3.8-26.el7.x86_64.rpm squid-debuginfo-3.3.8-26.el7.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
aarch64: squid-debuginfo-3.3.8-26.el7.aarch64.rpm squid-sysvinit-3.3.8-26.el7.aarch64.rpm
ppc64: squid-debuginfo-3.3.8-26.el7.ppc64.rpm squid-sysvinit-3.3.8-26.el7.ppc64.rpm
ppc64le: squid-debuginfo-3.3.8-26.el7.ppc64le.rpm squid-sysvinit-3.3.8-26.el7.ppc64le.rpm
s390x: squid-debuginfo-3.3.8-26.el7.s390x.rpm squid-sysvinit-3.3.8-26.el7.s390x.rpm
x86_64: squid-debuginfo-3.3.8-26.el7.x86_64.rpm squid-sysvinit-3.3.8-26.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: squid-3.3.8-26.el7.src.rpm
x86_64: squid-3.3.8-26.el7.x86_64.rpm squid-debuginfo-3.3.8-26.el7.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64: squid-debuginfo-3.3.8-26.el7.x86_64.rpm squid-sysvinit-3.3.8-26.el7.x86_64.rpm


Read the Full Advisory


Advisory ID: RHSA-2015:2378-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:2378.html
Issue date: 2015-11-19

Topic

Updated squid packages that fix one security issue and two bugs are nowavailable for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having Moderate securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory bug fix security fix Red Hat Enterprise Linux moderate impact man-in-the-middle squid issue

Relevant Releases Architectures

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1102842 - missing /var/run/squid needed for smp mode

1161600 - Squid does not serve cached responses with Vary headers1198778 - Filedescriptor leaks on snmp

1204375 - squid sends incorrect ssl chain breaking newer gnutls using applications

1218118 - CVE-2015-3455 squid: incorrect X509 server certificate validation (SQUID-2015:1)

1263338 - squid with digest auth on big endian systems start looping

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