The SIP implementation on the Linksys SPA2102 phone adapter provides hashed credentials in a response to an invalid authentication challenge, which makes it easier for remote attackers to obtain access via a brute-force attack, related to a "SIP Digest Leak" issue.
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
Link | Tags |
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https://resources.enablesecurity.com/resources/sipdigestleak-tut.pdf | third party advisory mailing list |
http://voipsa.org/pipermail/voipsec_voipsa.org/2009-April/002946.html | third party advisory mailing list |