-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

===========================================================================
AA-2005.0026                  AUSCERT Advisory

               Opera 8.51 release fixes two vulnerabilities
                             23 November 2005
- ---------------------------------------------------------------------------

        AusCERT Advisory Summary
        ------------------------

Product:           Opera for Desktop 8.50 and prior
Operating System:  Windows
                   UNIX variants
Impact:            Execute Arbitrary Code/Commands
Access:            Remote/Unauthenticated
CVE Names:         CVE-2005-2628 CVE-2005-3591
Member-only until: Wednesday, December 21 2005

Ref:               ESB-2005.0894


OVERVIEW:

	Opera 8.51 has been released fixing two vulnerabilities:

	1. Opera prior to version 8.51 shipped with a vulnerable version of 
	   Macromedia flash player.[1] This vulnerability is described in 
	   AusCERT ESB-2005.0894.[2]

	2. Linux/UNIX platforms only: The wrapper script used by external 
	   applications to invoke Opera can be made to execute arbitrary 
	   commands embedded with backtick characters in a link URL.[3]


IMPACT:

	1. When a user visits a malicious web page, a remote attacker can
	   execute arbitrary code with the privileges of the user running 
	   Opera.

	2. Where an external application is configured to use Opera as its 
	   default browser, a user clicking on a malicious link in the 
	   external application will allow a remote attacker to execute
	   arbitrary commands with the privileges of that user.


MITIGATION:

	Opera 8.51 has now been released fixing these vulnerabilities. 
	It is available at http://www.opera.com/download/


REFERENCES:

	[1] Opera announcement
	    http://www.opera.com/announcements/en/2005/11/22/

	[2] AusCERT ESB-2005.0894
	    http://www.auscert.org.au/5710

	[3] Secunia Research advisory
	    http://secunia.com/secunia_research/2005-57/advisory/


AusCERT has made every effort to ensure that the information contained
in this document is accurate.  However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.

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.
===========================================================================

-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967

iQCVAwUBQ4O9Qih9+71yA2DNAQKYdAQAhiinAKA8dQTM4PAl6WUfor5/6d1/6S/k
D8HbfvpY1+kNKcHeScu9XTaOwYjdz4d43yP/gkMg7yMrFDUQ5HROVyLtqHic+hX1
bdrh3s6cTtq/2yDrYrSwTzRndZiVeQYg53+MCh0E0eulplm0idQzrTzWQ0eTLF+G
d0kXda9VhOk=
=YQxT
-----END PGP SIGNATURE-----