Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT Security Bulletin
ASB-2009.1141.2
Opera 10.10 has been released correcting multiple vulnerabilities
25 November 2009
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Opera
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Cross-site Scripting -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2009-4072 CVE-2009-4071
Member content until: Thursday, December 24 2009
Revision History: November 25 2009: Added CVE References
November 24 2009: Initial Release
OVERVIEW
Opera 10.10 has been released correcting multiple vulnerabilities.
IMPACT
The vendor has provided the following information regarding the
vulnerabilities that have been corrected in version 10.10:
Heap buffer overflow in string to number conversion:
"Passing very long strings through the string to number
conversion using JavaScript in Opera may result in heap buffer
overflows. This also affects the dtoa routine, and was reported
in CVE-2009-0689. In most cases Opera will just freeze or
terminate, but in some cases this could lead to a crash which
could be used to execute code." [1]
Error messages can leak onto unrelated sites
"Scripting error messages are normally available only to the page
that caused the error. In some cases, the error messages could be
passed to other sites as the contents of unrelated variables, and
may contain sensitive information. If those sites write the
content into the page markup, this could allow cross-site
scripting, using code provided by the attacking site. This issue
only affects installations that have enabled stacktraces for
exceptions, these are disabled by default." [2]
Unspecified Vulnerability
"Fixed a moderately severe issue, as reported by Chris Evans of
the Google Security Team; details will be disclosed at a later
date." [3]
MITIGATION
Opera version 10.10 is available for download from the vendor's
website. [4]
REFERENCES
[1] Advisory: Heap buffer overflow in string to number conversion
http://www.opera.com/support/kb/view/942/
[2] Advisory: Error messages can leak onto unrelated sites
http://www.opera.com/support/kb/view/941/
[3] Opera 10.10 (Opera Unite) for Windows changelog
http://www.opera.com/docs/changelogs/windows/1010/
[4] Download Opera browser
http://www.opera.com/download
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
iD8DBQFLDKuRNVH5XJJInbgRAl2zAJ9Md3OsEsgOsOiEJt7aJFSmUE6e5gCfeA2g
NU9hUgZXRv3a15R9Xe4e4Wg=
=DX86
-----END PGP SIGNATURE-----