Ubuntu Security Notice USN-836-1

23rd September, 2009

webkit vulnerabilities

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

• Ubuntu 9.04
• Ubuntu 8.10

Software description

• webkit

Details

It was discovered that WebKit 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 WebKit 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 WebKit 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 version:

Ubuntu 9.04:

libwebkit-1.0-1-dbg 1.0.1-4ubuntu0.1

libwebkit-1.0-1 1.0.1-4ubuntu0.1

libwebkit-dev 1.0.1-4ubuntu0.1

Ubuntu 8.10:

libwebkit-1.0-1-dbg 1.0.1-2ubuntu0.2

libwebkit-1.0-1 1.0.1-2ubuntu0.2

libwebkit-dev 1.0.1-2ubuntu0.2

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

After a standard system upgrade you need to restart any applications that
use WebKit, such as Epiphany-webkit and Midori, to effect the necessary
changes.

References

CVE-2009-0945, CVE-2009-1687, CVE-2009-1690, CVE-2009-1698, CVE-2009-1711, CVE-2009-1712, CVE-2009-1725