HP Tru64 SSH Valid User Identification
Secunia Advisory: SA24036
Release Date: 2007-05-16
Last Update: 2007-06-07
Popularity: 5,591 views

Critical:
Less critical
Impact: Exposure of system information
Where: From remote
Solution Status: Vendor Patch

OS:HP Tru64 UNIX 5.x

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CVE reference:CVE-2007-2791


Description:
Andrea Purificato has reported a vulnerability in HP Tru64, which can be exploited by malicious people to gain knowledge of system information.

The problem is that it is possible to determine whether a user exists on a system or not by measuring the time it takes before a reply is received when connecting to the ssh service with an arbitrary user name.

The vulnerability affects the following versions:
* HP Tru64 UNIX v5.1B-4
* HP Tru64 UNIX v5.1B-3

Solution:
Apply Early Release Patch (ERP) kits.

HP Tru64 UNIX Version v5.1B-4:
http://www.itrc.hp.com/service/patch/...hid=T64KIT1001208-V51BB26-ES-20070427

HP Tru64 UNIX Version v5.1B-3:
http://www.itrc.hp.com/service/patch/...hid=T64KIT1001205-V51BB27-ES-20070427

HP Tru64 UNIX Version v5.1B-5 mainstream release patch kit is reportedly being developed.

Provided and/or discovered by:
Andrea Purificato

Changelog:
2007-05-22: Added CVE reference.
2007-06-07: Updated advisory and added additional link.

Original Advisory:
HPSBTU02209 SSRT071323:
http://www4.itrc.hp.com/service/cki/d...28353475&docId=emr_na-c01007552-1

http://rawlab.mindcreations.com/codes/exp/nix/tru64-sshenum.pl


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