Ubuntu Security Notice 821-1: Firefox and Xulrunner vulnerabilities

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)…

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