OpenSSH, when configured to use GSSAPI authentication, is prone to a remote information disclosure weakness. The issue occurs due to the GSSAPI authentication routine responding differently to an attacker who lets the connection proceed normally versus aborting the connection prematurely. This different in the system's response allows an attacker to determine which accounts are valid.
Classification
Location:
Remote / Network Access
Attack Type:
Information Disclosure,
Race Condition
Impact:
Loss of Confidentiality
Exploit:
Exploit Unknown
Disclosure:
OSVDB Verified
Solution
Upgrade to version 4.4 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.
This product uses the Daylife API but is not endorsed or certified by Daylife.
This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.