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Bug 1542992 - (CVE-2018-5381) CVE-2018-5381 quagga: Infinite loop issue triggered by invalid OPEN message allows denial-of-service
CVE-2018-5381 quagga: Infinite loop issue triggered by invalid OPEN message a...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20180215,repor...
: Security
Depends On: 1546003 1546004
Blocks: 1543001
  Show dependency treegraph
 
Reported: 2018-02-07 09:18 EST by Adam Mariš
Modified: 2018-02-21 01:26 EST (History)
7 users (show)

See Also:
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.
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Upstream patch (1.19 KB, patch)
2018-02-07 09:22 EST, Adam Mariš
no flags Details | Diff

  None (edit)
Description Adam Mariš 2018-02-07 09:18:34 EST
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 09:18:38 EST
Acknowledgments:

Name: the Quagga project
Comment 3 Adam Mariš 2018-02-07 09:22 EST
Created attachment 1392683 [details]
Upstream patch
Comment 4 Doran Moppert 2018-02-12 23:15:30 EST
External References:

https://www.quagga.net/security/Quagga-2018-1975.txt
Comment 5 Doran Moppert 2018-02-15 23:37:17 EST
Created quagga tracking bugs for this issue:

Affects: fedora-all [bug 1546004]

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