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Quagga Multiple Denial of Service Vulnerabilities
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Secunia Advisory:
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SA26744
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Release Date:
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2007-09-11
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Last Update:
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2007-09-14
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Popularity:
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4,440 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Workaround
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| Software: | Quagga 0.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2007-4826
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Description:
Some vulnerabilities have been reported in Quagga, which can be exploited by malicious users to cause a DoS (Denial of Service).
The vulnerabilities are caused due to bgpd improperly handling messages sent by peers. This can be exploited to crash bgpd by sending a specially crafted "OPEN" message with an invalid message length or an invalid parameter length, or a specially crafted "UPDATE" message with a malformed "COMMUNITY" attribute.
Successful exploitation requires that the attacker is configured as peer of the target system. Successful exploitation of the "UPDATE" vulnerability requires that debugging of BGP updates is enabled.
The vulnerabilities are reported in versions prior to 0.99.9.
Solution:
Fixed in unstable version 0.99.9.
Connect to trusted peers only.
Provided and/or discovered by:
The vendor credits Mu Security.
Changelog:
2007-09-13: Updated advisory with additional information.
2007-09-14: Added CVE reference.
Original Advisory:
Quagga:
http://www.quagga.net/download/quagga-0.99.9.changelog.txt
Mu Security:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-September/065751.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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