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OpenSSH Signal Handling Vulnerability and User Enumeration Weakness
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Secunia Advisory:
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SA22173
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Release Date:
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2006-09-29
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Last Update:
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2007-11-08
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Popularity:
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21,083 views
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Critical:
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Highly critical
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Impact:
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Exposure of system information
DoS
System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | OpenSSH 3.x
OpenSSH 4.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
A vulnerability and a weakness have been reported in OpenSSH, which can be exploited by malicious people to disclose certain system information, cause a DoS (Denial of Service), and potentially compromise a vulnerable system.
1) A race condition exists within the signal handling. This can be exploited to crash the OpenSSH server and potentially allows the execution of arbitrary code.
The vulnerability is reported in version 4.3. Prior versions may also be affected.
2) An error in the processing of GSSAPI authentication requests can be exploited to determine if a username is valid.
The weakness is reported in versions prior to 4.4.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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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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