Bug 817580 (CVE-2012-1820)

Summary: CVE-2012-1820 quagga (bgpd): Assertion failure by processing BGP OPEN message with malformed ORF capability TLV (VU#962587)
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: atkac, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-09-13 16:49:55 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 829266, 845528, 845529    
Bug Blocks: 738408    
Attachments:
Description Flags
fixing patch none

Description Jan Lieskovsky 2012-04-30 14:39:21 UTC 
A denial of service flaw was found in the way Quagga's bgpd daemon processed certain OPEN messages. A configured Border Gateway Protocol (BGP) peer could send a BGP OPEN message with specially-crafted value of the Outbound Route Filtering (ORF) capability Type/Length/Value (TLV) triplet, which would cause the master BGP daemon (bgpd) to abort with an assertion failure by processing of such a message. Also, all BGP sessions established by the attacked router would be closed and its BGP routing disrupted.
Comment 2 Jan Lieskovsky 2012-04-30 14:49:02 UTC 
This issue affects the version of the quagga package, as shipped with Red Hat Enterprise Linux 6.

--

This issue affects the versions of the quagga package, as shipped with Fedora release of 15 and 16.
Comment 5 Jan Lieskovsky 2012-06-06 10:50:53 UTC 
US-CERT Vulnerability Note VU#962587:
[1] http://www.kb.cert.org/vuls/id/962587
Comment 6 Jan Lieskovsky 2012-06-06 10:53:31 UTC 
Created quagga tracking bugs for this issue

Affects: fedora-all [bug 829266]
Comment 7 Denis Ovsienko 2012-06-06 11:10:40 UTC 
Created attachment 589837 [details]
fixing patch

Attached is a copy of the original fix: https://github.com/Quagga-RE/quagga-RE/commit/790d1e263e8800bc49d0038d481591ecb4e37b88
Comment 8 Fedora Update System 2012-06-19 14:55:42 UTC 
quagga-0.99.21-2.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2012-06-19 15:02:00 UTC 
quagga-0.99.20.1-2.fc15 has been pushed to the Fedora 15 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2012-06-19 15:07:39 UTC 
quagga-0.99.21-2.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 13 errata-xmlrpc 2012-09-12 20:06:00 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:1259 https://rhn.redhat.com/errata/RHSA-2012-1259.html
Comment 14 Murray McAllister 2012-09-13 02:56:27 UTC 
Acknowledgements:

Red Hat would like to thank the CERT/CC for reporting this issue. The CERT/CC acknowledges Denis Ovsienko as the original reporter.