<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200606-01"> <title>Opera: Buffer overflow</title> <synopsis> Opera contains an integer signedness error resulting in a buffer overflow which may allow a remote attacker to execute arbitrary code. </synopsis> <product type="ebuild">opera</product> <announced>June 07, 2006</announced> <revised>June 07, 2006: 01</revised> <bug>129800</bug> <access>remote</access> <affected> <package name="www-client/opera" auto="yes" arch="*"> <unaffected range="ge">8.54</unaffected> <vulnerable range="lt">8.54</vulnerable> </package> </affected> <background> <p> Opera is a multi-platform web browser. </p> </background> <description> <p> SEC Consult has discovered a buffer overflow in the code processing style sheet attributes. It is caused by an integer signedness error in a length check followed by a call to a string function. It seems to be hard to exploit this buffer overflow to execute arbitrary code because of the very large amount memory that has to be copied. </p> </description> <impact type="normal"> <p> A remote attacker can entice a user to visit a web page containing a specially crafted style sheet attribute that will crash the user's browser and maybe lead to the execution of arbitrary code. </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All Opera users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=www-client/opera-8.54"</code> </resolution> <references> <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1834">CVE-2006-1834</uri> </references> <metadata tag="submitter" timestamp="Tue, 30 May 2006 13:12:35 +0000"> falco </metadata> <metadata tag="bugReady" timestamp="Wed, 31 May 2006 19:39:23 +0000"> DerCorny </metadata> </glsa>