Bugs item #3603904, was opened at 2013-02-08 18:58
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: Yes
Submitted By: https://www.google.com/accounts ()
Assigned to: Nobody/Anonymous (nobody)
Summary: potential 

Initial Comment:
Hello, while performing an audit of vde2 
(https://bugs.launchpad.net/ubuntu/+source/vde2/+bug/776818) I found a bug; it 
may even be a security bug. If you decide this is a security issue, please 
contact the linux-distros security list to coordinate a release and request a 
CVE number. (See http://oss-security.openwall.org/wiki/mailing-lists/distros 
for details on using the linux-distros list. Note especially that [vs] is 
required in the Subject: header.)

data_encypt() encrypts the data from the src buffer and places it in the dst 
buffer. The OpenSSL documentation is clear that the destination buffer needs to 
be large enough to handle (inl + cipher_block_size - 1) bytes of output, 
however data_encrypt() and send_udp() do not enforce that the destination 
buffer is the necessary size larger than the source buffer. If this constraint 
is somehow enforced by coding convention, please annotate that convention at 
the call site and data declaration sites.

Thanks

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