A certain Debian patch for OpenSSH before 4.3p2-9etch3 on etch; before 4.6p1-1 on sid and lenny; and on other distributions such as SUSE uses functions that are not async-signal-safe in the signal handler for login timeouts, which allows remote attackers to cause a denial of service (connection slot exhaustion) via multiple login attempts. NOTE: this issue exists because of an incorrect fix for CVE-2006-5051.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This vulnerability has a 28.39% probability of being exploited in the next 30 days, ranking higher than 98% of all scored CVEs.