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    CVE-2007-4137

    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.

    Published:Sep 3, 2007
    Last Modified:Apr 23, 2026
    EPS:Sep 18, 2007
    EPSS Score:0.0355
    CVSS Score:7.5

    Affected Products

    Vendor
    Conectiva
    Product
    Linux
    Vendor
    Gentoo
    Product
    Linux
    Vendor
    Mandrakesoft
    Product
    Mandrake Linux
    Vendor
    Mandrakesoft
    Product
    Mandrake Linux Corporate Server
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Linux
    Vendor
    Trolltech
    Product
    Qt
    Vendor
    Ubuntu
    Product
    Ubuntu Linux

    Exploits

    No exploit reference

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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High