Mailing List Archive

Plugin 18502 unsafe (Network check for MS05-027, smb_kb896422.nasl)
Hi,

running this plugin on its own (with safe checks enabled) against a Win2K pro
host that does not have last Tuesday's updates applied causes a reproducible BSOD.

[Wed Jun 22 11:17:24 2005][31392] user nessus starts a new scan. Target(s) :
xxxx, with max_hosts = 15 and max_checks = 4
[Wed Jun 22 11:17:24 2005][31392] user nessus : testing xxxx (1.2.3.4) [31425]
[Wed Jun 22 11:17:24 2005][31425] user nessus : launching find_service.nes
against risk [31426]
[Wed Jun 22 11:17:25 2005][31425] find_service.nes (process 31426) finished
its job in 0.195 seconds
[Wed Jun 22 11:17:25 2005][31425] user nessus : launching cifs445.nasl against
risk [31427]
[Wed Jun 22 11:17:25 2005][31425] cifs445.nasl (process 31427) finished its
job in 0.422 seconds
[Wed Jun 22 11:17:25 2005][31425] user nessus : launching
netbios_name_get.nasl against risk [31428]
[Wed Jun 22 11:17:25 2005][31425] netbios_name_get.nasl (process 31428)
finished its job in 0.104 seconds
[Wed Jun 22 11:17:25 2005][31425] user nessus : launching
smb_nativelanman.nasl against risk [31429]
[Wed Jun 22 11:17:25 2005][31425] smb_nativelanman.nasl (process 31429)
finished its job in 0.138 seconds
[Wed Jun 22 11:17:25 2005][31425] user nessus : launching smb_kb896422.nasl
against risk [31430]
[Wed Jun 22 11:17:55 2005][31425] smb_kb896422.nasl (process 31430) finished
its job in 30.195 seconds
[Wed Jun 22 11:17:55 2005][31425] Finished testing risk. Time : 31.18 secs
[Wed Jun 22 11:17:55 2005][31392] user nessus : test complete
[Wed Jun 22 11:17:56 2005][31392] user nessus : Kept alive connection
[Wed Jun 22 11:23:41 2005][31392] Communication closed by client

The host dies just after 11:17:25.

The version of this plugin that checks the registry correctly identifies that
the fix for MS05-027 is missing.

I can provide an export of HKLM\SOFTWARE\Microsoft\Updates\Windows 2000
if the authors want to check the exact list of patches applied, I believe
all SPs and security updates except the ones released last Tuesday have
been installed.

I would suggest to changing the category of this plugin to destructive...


Regards,

--
Hubert Seiwert

Internet Security Specialist, Westpoint Ltd
Albion Wharf, 19 Albion Street, Manchester M1 5LN, United Kingdom

Web: www.westpoint.ltd.uk
Tel: +44-161-2371028
Re: Plugin 18502 unsafe (Network check for MS05-027, smb_kb896422.nasl) [ In reply to ]
We've now tested this against an unpatched XP and the plugin fires
while not crashing the box. It is definitely dangerous against
unpatched 2K hosts, though.

--
Hubert Seiwert

Internet Security Specialist, Westpoint Ltd
Albion Wharf, 19 Albion Street, Manchester M1 5LN, United Kingdom

Web: www.westpoint.ltd.uk
Tel: +44-161-2371028
Re: Re: Plugin 18502 unsafe (Network check for MS05-027, smb_kb896422.nasl) [ In reply to ]
On Jun 22, 2005, at 8:42, Hubert Seiwert wrote:

> We've now tested this against an unpatched XP and the plugin fires
> while not crashing the box. It is definitely dangerous against
> unpatched 2K hosts, though.

We could not reproduce the issue against our Windows 2000 Pro boxes
here, however we've changed the detection method for Win2K boxes this
morning, so that it matches the method used against XP and Windows
2003 Server.

So rev 1.2 of this plugin should not cause any trouble.


Thanks,

-- Renaud