TITLE:
FortressSSH SSH_MSG_KEXINIT Logging Buffer Overflow
SECUNIA ADVISORY ID:
SA20114
VERIFY ADVISORY:
http://secunia.com/advisories/20114/
CRITICAL:
Highly critical
IMPACT:
System access
WHERE:
>From remote
SOFTWARE:
Pragma FortressSSH 4.x
http://secunia.com/product/9961/
DESCRIPTION:
Gerry Eisenhaur has discovered a vulnerability in FortressSSH, which
can be exploited by malicious people to compromise a vulnerable
system.
The vulnerability is caused due to a boundary error within the
logging of the contents in SSH_MSG_KEXINIT messages sent by an SSH
client. This can be exploited to cause a stack-based buffer overflow
and may allow arbitrary code execution.
The vulnerability has been confirmed in version 4.0.7.20. Other
versions may also be affected.
SOLUTION:
Restrict access to trusted IP addresses only.
PROVIDED AND/OR DISCOVERED BY:
Gerry Eisenhaur
About:
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