Bug 1542992 (CVE-2018-5381)

Summary: CVE-2018-5381 quagga: Infinite loop issue triggered by invalid OPEN message allows denial-of-service
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: balajig81, bennie.joubert, jaskalnik, mruprich, msekleta, security-response-team, yozone
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: quagga 1.2.3 Doc Type: If docs needed, set a value
Doc Text:
An infinite loop vulnerability was discovered in Quagga. A BGP peer could send specially crafted packets that would cause the daemon to enter an infinite loop, denying service and consuming CPU until it is restarted.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:39:29 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1546003, 1546004    
Bug Blocks: 1543001    
Attachments:
Description Flags
Upstream patch none

Description Adam Mariš 2018-02-07 14:18:34 UTC 
The Quagga BGP daemon, bgpd, can enter an infinite loop if sent an invalid
OPEN message by a configured peer.

This problem is triggerable by packets from a configured peer.

When triggered, the bgpd daemon enters an infinite loop and cease to respond
to any other events.  BGP sessions will drop and not be reestablished.  The
CLI interface will be unresponsive.  The bgpd daemon will stay in this state
until it is restarted.

Affects versions of quagga since 0.99.9

If "override-capability" neighbour option is set, all versions are affected.
Comment 1 Adam Mariš 2018-02-07 14:18:38 UTC 
Acknowledgments:

Name: the Quagga project
Comment 3 Adam Mariš 2018-02-07 14:22:46 UTC 
Created attachment 1392683 [details]
Upstream patch
Comment 4 Doran Moppert 2018-02-13 04:15:30 UTC 
External References:

https://www.quagga.net/security/Quagga-2018-1975.txt
Comment 5 Doran Moppert 2018-02-16 04:37:17 UTC 
Created quagga tracking bugs for this issue:

Affects: fedora-all [bug 1546004]