*** This bug is a security vulnerability ***

Public security bug reported:

CVE-2008-0960 description:

"Some SNMP implementations include incomplete HMAC authentication code
that allows spoofing of authenticated SNMPv3 packets.

The authentication code reads the length to be checked from sender
input, this allows the sender to supply single byte HMAC code and have a
1 in 256 chance of matching the correct HMAC and authenticating, as only
the first byte will be checked. The sender would need to know a valid
username.

Currently Net-SNMP and UCD-SNMP are known to be vulnerable, other SNMP
implementations may also be affected. The eCos project includes code
derived from UCD-SNMP and is therefore also affected."

http://www.ocert.org/advisories/ocert-2008-006.html

See also:
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2008-0960
http://www.kb.cert.org/vuls/id/878044

** Affects: ecos (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: net-snmp (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: ucd-snmp (Ubuntu)
     Importance: Undecided
         Status: New

** Visibility changed to: Public

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2008-0960

** Also affects: ecos (Ubuntu)
   Importance: Undecided
       Status: New

-- 
[CVE-2008-0960] Multiple SNMP implementations HMAC authentication spoofing
https://bugs.launchpad.net/bugs/239129
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