Qt UTF-8 cross-site scripting

qt-utf8-xss (33397) The risk level is classified as MediumMedium Risk

Description:

Qt could allow a remote attacker to bypass security restrictions and perform cross-site scripting attacks, caused by the improper handling of the UTF-8 decoder. A remote attacker could exploit this vulnerability using overly long UTF-8 character sequences to execute arbitrary script in a victim's browser within the security context of the affected Web site, allowing the attacker to steal the victim's cookie-based authentication credentials.

Platforms Affected:

  • Avaya, Intuity Audix LX 2.0
  • Avaya, Message Networking 3.1
  • Avaya, Message Storage Server 3.0
  • Canonical, Ubuntu 5.10
  • Canonical, Ubuntu 6.06 LTS
  • Canonical, Ubuntu 6.10
  • Debian, Debian Linux 4.0
  • MandrakeSoft, Mandrake Linux 2007
  • MandrakeSoft, Mandrake Linux 2007 X86_64
  • MandrakeSoft, Mandrake Linux 2007.1 X86_64
  • MandrakeSoft, Mandrake Linux 2007.1
  • MandrakeSoft, Mandrake Linux Corporate Server 3.0
  • MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
  • MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
  • MandrakeSoft, Mandrake Linux Corporate Server 4.0
  • RedHat, Enterprise Linux 2.1 WS
  • RedHat, Enterprise Linux 2.1 AS
  • RedHat, Enterprise Linux 2.1 ES
  • RedHat, Enterprise Linux 3 WS
  • RedHat, Enterprise Linux 3 ES
  • RedHat, Enterprise Linux 3 AS
  • RedHat, Enterprise Linux 3 Desktop
  • RedHat, Enterprise Linux 4 WS
  • RedHat, Enterprise Linux 4 ES
  • RedHat, Enterprise Linux 4 Desktop
  • RedHat, Enterprise Linux 4 AS
  • RedHat, Enterprise Linux 5 Client
  • RedHat, Enterprise Linux 5 Server
  • RedHat, Enterprise Linux 5 Client Workstation
  • RedHat, Enterprise Linux 5
  • RedHat, Enterprise Linux Desktop 5.0
  • RedHat, Linux Advanced Workstation 2.1 Itanium
  • Trolltech, Qt 3.3.8
  • Trolltech, Qt 4.2.3
  • Turbolinux, Turbolinux 10 Desktop
  • Turbolinux, Turbolinux 10 F...
  • Turbolinux, Turbolinux 10 Server
  • Turbolinux, Turbolinux 10 Server x64 Ed
  • Turbolinux, Turbolinux FUJI
  • Turbolinux, Turbolinux Home
  • Turbolinux, Turbolinux Multimedia
  • Turbolinux, Turbolinux Personal
  • Turbolinux, Turbolinux wizpy

Remedy:

Refer to Trolltech News & Events Announcement 2007-03-30.9172215350 for patch, upgrade, or suggested workaround information. See References.

For Mandriva Linux (kdelibs):
Refer to MDKSA-2007:076 for patch, upgrade, or suggested workaround information. See References.

For Mandriva Linux (qt3):
Refer to MDKSA-2007:074 for patch, upgrade, or suggested workaround information. See References.

For Mandriva Linux (qt4):
Refer to MDKSA-2007:075 for patch, upgrade, or suggested workaround information. See References.

For Ubuntu (kdelibs, qt-x11-free):
Refer to USN-452-1 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux (qt4-x11):
Refer to DSA-1292-1 for patch, upgrade, or suggested workaround information. See References.

For Turbolinux (kdelibs):
Refer to TLSA-2007-28 for patch, upgrade, or suggested workaround information. See References.

For Turbolinux (qt3):
Refer to TLSA-2007-30 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux (qt):
Refer to RHSA-2007:0883-2 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Gain Access

References:

  • Trolltech News & Events Announcement 2007-03-30.9172215350, Trolltech Releases Patch for Qt 3.3.8 and 4.2.3, Adressing UTF-8 Security Issue at http://www.trolltech.com/company/newsroom/announcements/press.2007-03-30.9172215350.
  • ASA-2007-424: Qt security update (RHSA-2007-0883)
  • BID-23269: Trolltech Qt UTF-8 Sequences Input Validation Vulnerability
  • CVE-2007-0242: The UTF-8 decoder in codecs/qutfcodec.cpp in Qt 3.3.8 and 4.2.3 does not reject long UTF-8 sequences as required by the standard, which allows remote attackers to conduct cross-site scripting (XSS) and directory traversal attacks via long sequences that decode to dangerous metacharacters.
  • DSA-1292: qt4-x11 -- missing input validation
  • FrSIRT/ADV-2007-1212: Trolltech Qt QString::fromUtf8() Sequence Decoding Security Bypass Vulnerability
  • MDKSA-2007:074: Updated qt3 packages to address utf8 decoder bug
  • MDKSA-2007:075: Updated qt4 packages to address utf8 decoder bug
  • MDKSA-2007:075-1: Updated qt4 packages to address utf8 decoder bug
  • MDKSA-2007:076: Updated kdelibs packages to address UTF8 issue in KJS
  • RHSA-2007-0883: Important: qt security update
  • RHSA-2007-0909: Moderate: kdelibs security update
  • SA24727: Qt Overlong UTF-8 Sequence Cross-Site Scripting Vulnerability
  • SA27275: Avaya Products Qt Overlong UTF-8 Sequence Cross-Site Scripting
  • SUSE-SR:2007:006: SUSE Security Summary Report

Reported:

Apr 03, 2007

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