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FortressSSH SSH_MSG_KEXINIT Logging Buffer Overflow
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Secunia Advisory:
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SA20114
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Release Date:
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2006-05-16
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Last Update:
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2006-07-19
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Popularity:
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7,026 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | Pragma FortressSSH 4.x
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| CVE reference: | CVE-2006-2421
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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
Changelog:
2006-07-19: Added CVE reference.
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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