https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7359
--- Comment #4 from Guy Harris <guy@xxxxxxxxxxxx> 2012-07-04 14:50:34 PDT ---
Can the password handed to the pass2key routine in set_ue_keys() ever have a
length of 0? They appear to be set from a user preference; what if the user
specifies an empty password?
If it can be zero-length, then the modulo operations in
snmp_usm_password_to_key_md5() and snmp_usm_password_to_key_sha1() would end up
doing a divide by zero. I didn't find any obvious division operations, but
those are two modulo operations where the modulus isn't a constant.
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