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USN-821-1: Firefox and Xulrunner vulnerabilities

10 September 2009

Firefox and Xulrunner vulnerabilities

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Packages

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)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04

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

Related notices

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Further reading