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AL-2005.0023 -- Veritas confirms Backup Exec authentication vulnerability

Date: 13 August 2005
References: AL-2005.0021  AU-2005.0017  

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===========================================================================
A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2005.0023 -- AUSCERT ALERT
         Veritas confirms Backup Exec authentication vulnerability
                              13 August 2005

===========================================================================

        AusCERT Alert Summary
        ---------------------

Product:           Backup Exec for Windows Servers 10.0 and prior
                   Backup Exec for NetWare Servers 9.1 and prior
                   Backup Exec Remote Agent for Windows Servers
                   Backup Exec Remote Agent for Linux and Unix Servers
                   Backup Exec Remote Agent for NetWare
Operating System:  Windows
                   Novell NetWare
                   UNIX variants
Impact:            Read-only Data Access
                   Administrator Compromise
Access:            Remote/Unauthenticated

Ref:               AL-2005.0021

- --------------------------BEGIN INCLUDED TEXT--------------------

OVERVIEW:

	VERITAS and Symantec have now confirmed the Backup Exec Remote Agent 
	authentication vulnerability described in AL-2005.0021, allowing 
	remote file access. [1][2][3]

	The vulnerable components are:
	o Backup Exec Remote Agent for Windows Servers (RAWS)
	o Backup Exec Remote Agent for Linux and Unix Servers (RALUS)
	o Backup Exec Remote Agent for NetWare (RANW)
	o Backup Exec media servers

	The vulnerability affects Backup Exec for Windows Servers versions
	8.6, 9.0, 9.1 and 10.0 as well as Backup Exec for NetWare Servers 
	prior to version 9.1.1158.3


IMPACT:

	A remote attacker can download arbitrary files from the computers 
	where the Remote Agent is installed.

	In many cases the information downloaded may then be used to take 
	complete control of the computer.

	AusCERT advises that exploit code targeting the vulnerability has
	been publicly released, and it has been reported that this
	vulnerability is now being exploited in the wild.


MITIGATION:

	No patch is yet available for Backup Exec for Windows Servers.
	System administrators are advised to monitor the page referenced
	below for the availability of a patch. [1]

	A patch for Backup Exec for NetWare Servers is now available from 
	the VERITAS website. [2]
	
	AusCERT encourages administrators to evaluate their exposure and
	strongly consider implementing network and host filtering for TCP 
	port 10000.

	Administrators may also wish to implement intrusion detection rules 
	to detect attempts to exploit this vulnerability [4].


REFERENCES:

	[1] VERITAS Backup Exec for Windows Servers Security Advisory 278434
	    http://seer.support.veritas.com/docs/278434.htm

	[2] VERITAS Backup Exec for NetWare Servers Security Advisory 278431
	    http://seer.support.veritas.com/docs/278431.htm

	[3] Symantec Security Advisory
	    http://securityresponse.symantec.com/avcenter/security/Content/14551.html

	[4] SANS Internet Storm Centre
	    http://isc.sans.org/diary.php?date=2005-08-11

	[5] FrSIRT Advisory
	    http://www.frsirt.com/english/advisories/2005/1387


- --------------------------END INCLUDED TEXT--------------------

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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
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contained in this security bulletin is the responsibility of each user or
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which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
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from the author's website to ensure that the information is still current.

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Previous advisories and external security bulletins can be retrieved from:

        http://www.auscert.org.au/render.html?cid=1980

If you believe that your computer system has been compromised or attacked in 
any way, we encourage you to let us know by completing the secure National IT 
Incident Reporting Form at:

        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================

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