Luigi Auriemma has discovered a vulnerability in freeSSHd, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to a NULL-pointer dereference error in the freeSSHd SSH server and can be exploited to cause the service to crash by sending a specially crafted packet to default port 22/TCP.
The vulnerability is confirmed in version 1.2.0. Other versions may also be affected.
Solution: Update to version 1.2.6.
Provided and/or discovered by: Luigi Auriemma
Original Advisory: http://aluigi.altervista.org/adv/freesshdnull-adv.txt
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Subject: freeSSHd SSH Server Denial of Service Vulnerability
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