USN-2723-1: Firefox vulnerabilities
27 August 2015
- firefox - Mozilla Open Source web browser
A use-after-free was discovered when resizing a canvas element during
restyling in some circumstances. If a user were tricked in to opening a
specially crafted website, an attacker could potentially exploit this to
cause a denial of service via application crash, or execute arbitrary code
with the privileges of the user invoking Firefox. (CVE-2015-4497)
Bas Venis discovered that the addon install permission prompt could be
bypassed using data: URLs in some circumstances. It was also discovered
that the installation notification could be made to appear over another
site. If a user were tricked in to opening a specially crafted website, an
attacker could potentially exploit this to install a malicious addon.
The problem can be corrected by updating your system to the following package versions:
After a standard system update you need to restart Firefox to make
all the necessary changes.