Technical Description

Multiple vulnerabilities have been identified in Opera, which could be exploited by remote attackers to cause a denial of service or take complete control of an affected system.

The first issue is caused by an invalid memory access when handling newsfeed prompts, which could be exploited by attackers to crash an affected browser or execute arbitrary code by tricking a user into visiting a specially crafted web page.

The second vulnerability is caused by a memory corruption error when handling resized canvas patterns, which could be exploited by attackers to crash an affected browser or execute arbitrary code by tricking a user into visiting a specially crafted web page.

Affected Products

Opera version 9.26 and prior

Solution

Upgrade to Opera version 9.27 :
http://www.opera.com/download/

References

http://www.vupen.com/english/advisories/2008/1084
http://www.opera.com/docs/changelogs/windows/927/
http://www.opera.com/support/search/view/881/
http://www.opera.com/support/search/view/882/

Credits

Vulnerabilities reported by Michal Zalewski.

ChangeLog

2008-04-03 : Initial release

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