Mark Ellzey Thomas has discovered a vulnerability in ScreenOS, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an unspecified error in the handling of pre-authentication SSHv1 traffic.

Successful exploitation causes a vulnerable device to reboot or hang but requires that SSHv1 support is enabled.

Solution
Update to one of the following versions:
Further details available to Secunia VIM customers

Provided and/or discovered by
Mark Ellzey Thomas

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://www.juniper.net/support/security/alerts/screenos-sshv1-3.txt

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers