A vulnerability has been identified in UCD-SNMP, which could be exploited by attackers to bypass security restrictions. This issue is caused by an error in the implementation of SNMPv3 that does not proprly validate user-supplied packets, which may allow a shortened HMAC code in the authenticator field to authenticate to an agent or a trap daemon using a valid username and a minimum HMAC of 1 byte.
Credits
Vulnerability reported by oCERT and CERT/CC.
ChangeLog
2008-06-11 : Initial release
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