34600 : OpenSSH S/KEY Authentication Account Enumeration
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Views This Week

3

Views All Time

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Info

Last Modified

5 months ago

Percent Complete

95%

Disclosure

Apr 21, 2007

Discovery

Unknown

Dates

Exploit

Unknown

Solution

Unknown

Description

OpenSSH, when configured to use S/KEY authentication, is prone to a remote information disclosure weakness. The issue occurs due to the S/KEY challenge/response system being used for valid accounts. If a remote attacker systematically attempts authentication against a list of usernames, they can watch the response to determine which accounts are valid.

Classification

Location: Remote/Network Access Required
Attack Type: Information Disclosure
Impact: Loss of Confidentiality
Exploit: Exploit Available

Solution

Currently, there are no known upgrades, patches, or workarounds available to correct this issue.

Products

OpenBSD
Watch-list
OpenSSH
Watch-list
4.6

References

Credit

  • Rembrandt - rembrandtBrand New Doo Doohelith.org -

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