USN-821-1: Firefox and Xulrunner vulnerabilities

Ubuntu Security Notice USN-821-1

10th September, 2009

firefox-3.0, xulrunner-1.9 vulnerabilities

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

  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS

Software description

  • firefox-3.0
  • xulrunner-1.9

Details

Several flaws were discovered in the Firefox 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-2009-3070,
CVE-2009-3071, CVE-2009-3072, CVE-2009-3074, CVE-2009-3075)

Jesse Ruderman and Dan Kaminsky discovered that Firefox did not adequately
inform users when security modules were added or removed via PKCS11. If
a user visited a malicious website, an attacker could exploit this to
trick the user into installing a malicious PKCS11 module. (CVE-2009-3076)

It was discovered that Firefox did not properly manage memory when using
XUL tree elements. 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-2009-3077)

Juan Pablo Lopez Yacubian discovered that Firefox did properly display
certain Unicode characters in the location bar and other text fields when
using a certain non-Ubuntu font. If a user configured Firefox to use this
font, an attacker could exploit this to spoof the location bar, such as in
a phishing attack. (CVE-2009-3078)

It was discovered that the BrowserFeedWriter in Firefox could be subverted
to run JavaScript code from web content with elevated chrome privileges.
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-2009-3079)

Update instructions

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

Ubuntu 9.04:
firefox-3.0 3.0.14+build2+nobinonly-0ubuntu0.9.04.1
abrowser 3.0.14+build2+nobinonly-0ubuntu0.9.04.1
xulrunner-1.9 1.9.0.14+build2+nobinonly-0ubuntu0.9.04.1
Ubuntu 8.10:
firefox-3.0 3.0.14+build2+nobinonly-0ubuntu0.8.10.1
abrowser 3.0.14+build2+nobinonly-0ubuntu0.8.10.1
xulrunner-1.9 1.9.0.14+build2+nobinonly-0ubuntu0.8.10.1
Ubuntu 8.04 LTS:
firefox-3.0 3.0.14+build2+nobinonly-0ubuntu0.8.04.1
xulrunner-1.9 1.9.0.14+build2+nobinonly-0ubuntu0.8.04.1

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

After a standard system upgrade you need to restart Firefox and any
applications that use xulrunner, such as Epiphany, to effect the necessary
changes.

References

CVE-2009-3070, CVE-2009-3071, CVE-2009-3072, CVE-2009-3074, CVE-2009-3075, CVE-2009-3076, CVE-2009-3077, CVE-2009-3078, CVE-2009-3079