Vulnerability CVE-2007-4137
Published: 2007-09-18   Modified: 2012-02-12

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.

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Trolltech -> QT 

 References:
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://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/oval%3Aorg.mitre.oval%3Adef%3A11159
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