CVE-2007-4137 Information

Description

Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service (crash) via a crafted Unicode string that triggers a heap-based buffer overflow. NOTE: Qt 4 has the same error in the QUtf8Codec::convertToUnicode function but it is not exploitable.

Reference

ftp://patches.sgi.com/support/free/security/advisories/20070901-01-P.asc http://bugs.gentoo.org/show_bug.cgi?id=192472 http://dist.trolltech.com/developer/download/175791_3.diff http://dist.trolltech.com/developer/download/175791_4.diff http://fedoranews.org/updates/FEDORA-2007-221.shtml http://fedoranews.org/updates/FEDORA-2007-703.shtml http://osvdb.org/39384 http://secunia.com/advisories/26778 http://secunia.com/advisories/26782 http://secunia.com/advisories/26804 http://secunia.com/advisories/26811 http://secunia.com/advisories/26857 http://secunia.com/advisories/26868 http://secunia.com/advisories/26882 http://secunia.com/advisories/26987 http://secunia.com/advisories/27053 http://secunia.com/advisories/27275 http://secunia.com/advisories/27382 http://secunia.com/advisories/27996 http://secunia.com/advisories/28021 http://security.gentoo.org/glsa/glsa-200710-28.xml http://security.gentoo.org/glsa/glsa-200712-08.xml http://securitytracker.com/id?1018688 http://support.avaya.com/elmodocs2/security/ASA-2007-424.htm http://trolltech.com/company/newsroom/announcements/press.2007-09-03.7564032119 http://www.debian.org/security/2007/dsa-1426 http://www.mandriva.com/security/advisories?name=MDKSA-2007:183 http://www.novell.com/linux/security/advisories/2007_19_sr.html http://www.redhat.com/support/errata/RHSA-2007-0883.html http://www.securityfocus.com/archive/1/481498/100/0/threaded http://www.securityfocus.com/bid/25657 http://www.ubuntu.com/usn/usn-513-1 http://www.vupen.com/english/advisories/2007/3144 https://bugzilla.redhat.com/show_bug.cgi?id=269001 https://issues.rpath.com/browse/RPL-1751 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A11159