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Red Hat: RHSA-2017:0794-01 Moderate: Quagga Denial of Service Issue

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Calendar Grey March 21, 2017
Scroller Redhat
Red Hat has released a moderate security advisory for Quagga, fixing several vulnerabilities that may lead to denial of service and other issues, vital for system integrity and effectiveness
An update for quagga 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 the updated packages, the bgpd daemon must be restarted for the update to take effect.

Summary

The quagga packages contain Quagga, the free network-routing software suite that manages TCP/IP based protocols. Quagga supports the BGP4, BGP4+, OSPFv2, OSPFv3, RIPv1, RIPv2, and RIPng protocols, and is intended to be used as a Route Server and Route Reflector.
Security Fix(es):
* A stack-based buffer overflow flaw was found in the way Quagga handled IPv6 router advertisement messages. A remote attacker could use this flaw to crash the zebra daemon resulting in denial of service. (CVE-2016-1245)
* A stack-based buffer overflow flaw was found in the way the Quagga BGP routing daemon (bgpd) handled Labeled-VPN SAFI routes data. A remote attacker could use this flaw to crash the bgpd daemon resulting in denial of service. (CVE-2016-2342)
* A denial of service flaw was found in the Quagga BGP routing daemon (bgpd). Under certain circumstances, a remote attacker could send a crafted packet to crash the bgpd daemon resulting in denial of service. (CVE-2016-4049)
* A denial of service flaw affecting various daemons in Quagga was found. A remote attacker could use this flaw to cause the various Quagga daemons, which expose their telnet interface, to crash. (CVE-2017-5495)
* A stack-based buffer overflow flaw was found in the way the Quagga OSPFD daemon handled LSA (link-state advertisement) packets. A remote attacker could use this flaw to crash the ospfd daemon resulting in denial of service. (CVE-2013-2236)
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service red hat quagga

References

https://access.redhat.com/security/cve/CVE-2013-2236 https://access.redhat.com/security/cve/CVE-2016-1245 https://access.redhat.com/security/cve/CVE-2016-2342 https://access.redhat.com/security/cve/CVE-2016-4049 https://access.redhat.com/security/cve/CVE-2017-5495 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux Server (v. 6):
Source: quagga-0.99.15-14.el6.src.rpm
i386: quagga-0.99.15-14.el6.i686.rpm quagga-debuginfo-0.99.15-14.el6.i686.rpm
ppc64: quagga-0.99.15-14.el6.ppc64.rpm quagga-debuginfo-0.99.15-14.el6.ppc64.rpm
s390x: quagga-0.99.15-14.el6.s390x.rpm quagga-debuginfo-0.99.15-14.el6.s390x.rpm
x86_64: quagga-0.99.15-14.el6.x86_64.rpm quagga-debuginfo-0.99.15-14.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 6):
i386: quagga-contrib-0.99.15-14.el6.i686.rpm quagga-debuginfo-0.99.15-14.el6.i686.rpm quagga-devel-0.99.15-14.el6.i686.rpm
ppc64: quagga-contrib-0.99.15-14.el6.ppc64.rpm quagga-debuginfo-0.99.15-14.el6.ppc.rpm quagga-debuginfo-0.99.15-14.el6.ppc64.rpm quagga-devel-0.99.15-14.el6.ppc.rpm quagga-devel-0.99.15-14.el6.ppc64.rpm
s390x: quagga-contrib-0.99.15-14.el6.s390x.rpm quagga-debuginfo-0.99.15-14.el6.s390.rpm quagga-debuginfo-0.99.15-14.el6.s390x.rpm quagga-devel-0.99.15-14.el6.s390.rpm quagga-devel-0.99.15-14.el6.s390x.rpm
x86_64: quagga-contrib-0.99.15-14.el6.x86_64.rpm quagga-debuginfo-0.99.15-14.el6.i686.rpm quagga-debuginfo-0.99.15-14.el6.x86_64.rpm quagga-devel-0.99.15-14.el6.i686.rpm quagga-devel-0.99.15-14.el6.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source: quagga-0.99.15-14.el6.src.rpm
i386:

Read the Full Advisory


Advisory ID: RHSA-2017:0794-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2017:0794.html
Issue date: 2017-03-21

Topic

An update for quagga 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 moderate denial of service red hat quagga

Relevant Releases Architectures

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

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

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

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

Bugs Fixed

674862 - Add missing man pages in quagga package

770731 - Interface prefix advertisement declaration prevents ospf6d from starting

839620 - /etc/sysconfig/quagga defines QCONFDIR, init scripts do not use it

842308 - quagga daemon pidfiles remain after daemons are stopped

862826 - Correct spec to add watchquagga

981124 - CVE-2013-2236 Quagga: OSPFD Potential remote code exec (stack based buffer overflow)

1316571 - CVE-2016-2342 quagga: VPNv4 NLRI parser memcpys to stack on unchecked length

1331372 - CVE-2016-4049 quagga: denial of service vulnerability in BGP routing daemon

1386109 - CVE-2016-1245 quagga: Buffer Overflow in IPv6 RA handling

1416013 - CVE-2017-5495 quagga: Telnet interface input buffer allocates unbounded amounts of memory

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