Date: 11 March 2016
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AUSCERT External Security Bulletin Redistribution
Quagga bgpd with BGP peers enabled for VPNv4 contains a
buffer overflow vulnerability
11 March 2016
AusCERT Security Bulletin Summary
Operating System: UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
CVE Names: CVE-2016-2342
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Vulnerability Note VU#270232
Quagga bgpd with BGP peers enabled for VPNv4 contains a buffer overflow
Original Release date: 10 Mar 2016 | Last revised: 10 Mar 2016
Quagga, version 0.99.24.1 and earlier, contains a buffer overflow
vulnerability in bgpd with BGP peers enabled for VPNv4 that may leveraged to
gain code execution.
CWE-121: Stack-based Buffer Overflow - CVE-2016-2342
Quagga is a software routing suite that implements numerous routing protocols
for Unix-based platforms. A memcpy function in the VPNv4 NLRI parser of
bgp_mplsvpn.c does not properly check the upper-bound length of received
Labeled-VPN SAFI routes data, which may allow for arbitrary code execution on
the stack. Note that hosts are only vulnerable if bgpd is running with BGP
peers enabled for VPNv4, which is not a default configuration. For more
details, refer to the Quagga changelog and commit notes.
A malicious BGP peer may execute arbitrary code in particularly configured
remote bgpd hosts.
Apply an update
Quagga has released version 1.0.20160309 which addresses this issue.
Vendor Information (Learn More)
Vendor Status Date Notified Date Updated
Quagga Affected 24 Nov 2015 10 Mar 2016
If you are a vendor and your product is affected, let us know.
CVSS Metrics (Learn More)
Group Score Vector
Base 7.6 AV:N/AC:H/Au:N/C:C/I:C/A:C
Temporal 6.0 E:POC/RL:OF/RC:C
Environmental 1.5 CDP:ND/TD:L/CR:ND/IR:ND/AR:ND
Thanks to Kostya Kortchinsky for reporting this vulnerability.
This document was written by Joel Land.
CVE IDs: CVE-2016-2342
Date Public: 10 Mar 2016
Date First Published: 10 Mar 2016
Date Last Updated: 10 Mar 2016
Document Revision: 12
If you have feedback, comments, or additional information about this
vulnerability, please send us email.
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