Scientific Linux Security Update : firefox on SL5.x, SL6.x i386/x86_64
Critical Nessus Plugin ID 61364
SynopsisThe remote Scientific Linux host is missing one or more security updates.
DescriptionMozilla Firefox is an open source web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox.
A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2012-1948, CVE-2012-1951, CVE-2012-1952, CVE-2012-1953, CVE-2012-1954, CVE-2012-1958, CVE-2012-1962, CVE-2012-1967)
A malicious web page could bypass same-compartment security wrappers (SCSW) and execute arbitrary code with chrome privileges.
A flaw in the context menu functionality in Firefox could allow a malicious website to bypass intended restrictions and allow a cross-site scripting attack. (CVE-2012-1966)
A page different to that in the address bar could be displayed when dragging and dropping to the address bar, possibly making it easier for a malicious site or user to perform a phishing attack.
A flaw in the way Firefox called history.forward and history.back could allow an attacker to conceal a malicious URL, possibly tricking a user into believing they are viewing a trusted site. (CVE-2012-1955)
A flaw in the way Firefox handled X-Frame-Options headers could allow a malicious website to perform a clickjacking attack. (CVE-2012-1961)
A flaw in the way Content Security Policy (CSP) reports were generated by Firefox could allow a malicious web page to steal a victim's OAuth 2.0 access tokens and OpenID credentials. (CVE-2012-1963)
A flaw in the way Firefox handled certificate warnings could allow a man-in-the-middle attacker to create a crafted warning, possibly tricking a user into accepting an arbitrary certificate as trusted.
The a previous nss update introduced a mitigation for the CVE-2011-3389 flaw. For compatibility reasons, it remains disabled by default in the nss packages. This update makes Firefox enable the mitigation by default. It can be disabled by setting the NSS_SSL_CBC_RANDOM_IV environment variable to 0 before launching Firefox.
For technical details regarding these flaws, refer to the Mozilla security advisories for Firefox 10.0.6 ESR.
All Firefox users should upgrade to these updated packages, which contain Firefox version 10.0.6 ESR, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.
SolutionUpdate the affected packages.