[AGENT++] Snmp++ Memory leak /Crash using SNMP V3 ?

[Anurag Jain]

All,

We are using version 3.2.18 of snmp++ library and we crashes in the code
(speciafically v3 ) as per th stack trace below  , we are using v3 
credentials on upto a 1000 devices together - high load with the same snmp 
v3 credential (auth-priv)?

#0  0x00baacee in _int_malloc () from /lib/tls/libc.so.6
#1  0x00baa0fd in malloc () from /lib/tls/libc.so.6
#2  0x004ec86e in operator new () from /usr/lib/libstdc++.so.5
#3  0x004ec9bf in operator new[] () from /usr/lib/libstdc++.so.5
#4  0x08161c09 in v3strcpy (src=0xbb064c0 "O¼Õ}tQ¸\204h\001YYèmÌ¥", 
srclen=16) at v3.cpp:156
#5  0x0815933d in USMUserTable::add_entry (this=0x933bf20, 
engine_id=@0x933b8d0, user_name=@0xb4cd338, sec_name=@0xb4cd364, 
auth_proto=2,
    auth_key=@0xab1b2550, priv_proto=2, priv_key=@0xab1b2520) at 
usm_v3.cpp:3519
#6  0x081509d0 in USM::add_localized_user (this=0x933b8d0, 
engine_id=@0x933b8d0, user_name=@0xb4cd338, security_name=@0xb4cd364, 
auth_protocol=2,
    auth_key=@0xab1b2550, priv_protocol=2, priv_key=@0xab1b2520) at 
usm_v3.cpp:938
#7  0x0815137e in USM::get_user (this=0x933b8d0, engine_id=@0x933b8d0, 
security_name=@0xab1b2680) at usm_v3.cpp:1156
#8  0x08150a35 in USM::add_usm_user (this=0x933b8d0, user_name=@0xab1b2680, 
security_name=@0xab1b2680, auth_protocol=2, priv_protocol=2,
    auth_password=@0xab1b26b0, priv_password=@0xab1b26e0) at usm_v3.cpp:961
#9  0x08150a7f in USM::add_usm_user (this=0x933b8d0, 
security_name=@0xab1b2680, auth_protocol=2, priv_protocol=2, 
auth_password=@0xab1b26b0,
    priv_password=@0xab1b26e0) at usm_v3.cpp:975

Has this been fixed in later versions of snmp++ ? Could this problem be 
related to the fix in :


Changes snmp++v3.2.20a
------------------
- Fixed: Bug in SNMPv3 encryption code which will lead to a
  crash after a random number of encryptions (Stuart Marks).


Please advice.

Thanks
Anurag

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