source: http://www.securityfocus.com/bid/41965/info

sSMTP is prone to a remote buffer-overflow vulnerability.

An attacker can exploit this issue to execute arbitrary code within the context of the affected application. Failed exploit attempts will result in a denial-of-service condition.

sSMTP 2.6.2 is vulnerable; other versions may also be affected. 

echo -n . ; for i in {1..2050} ; do echo -n $i ; done