USN-857-1: Qt vulnerabilities

10 November 2009

qt4-x11 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 9.04
  • Ubuntu 8.10

Software Description

  • qt4-x11

Details

It was discovered that QtWebKit did not properly handle certain SVGPathList data structures. If a user were tricked into viewing a malicious website, an attacker could exploit this to execute arbitrary code with the privileges of the user invoking the program. (CVE-2009-0945)

Several flaws were discovered in the QtWebKit browser and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2009-1687, CVE-2009-1690, CVE-2009-1698, CVE-2009-1711, CVE-2009-1725)

It was discovered that QtWebKit did not properly handle certain XSL stylesheets. If a user were tricked into viewing a malicious website, an attacker could exploit this to read arbitrary local files, and possibly files from different security zones. (CVE-2009-1699, CVE-2009-1713)

It was discovered that QtWebKit did not prevent the loading of local Java applets. If a user were tricked into viewing a malicious website, an attacker could exploit this to execute arbitrary code with the privileges of the user invoking the program. (CVE-2009-1712)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 9.04
libqt4-webkit - 4.5.0-0ubuntu4.3
Ubuntu 8.10
libqt4-webkit - 4.4.3-0ubuntu1.4

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system upgrade you need to restart your session to effect the necessary changes.

References