Ubuntu 1638-3: Firefox regressions

    Date03 Dec 2012
    CategoryUbuntu
    343
    Posted ByLinuxSecurity Advisories
    Regressions were introduced in the last Firefox update.
    ==========================================================================
    Ubuntu Security Notice USN-1638-3
    December 03, 2012
    
    firefox regressions
    ==========================================================================
    
    A security issue affects these releases of Ubuntu and its derivatives:
    
    - Ubuntu 12.10
    - Ubuntu 12.04 LTS
    - Ubuntu 11.10
    - Ubuntu 10.04 LTS
    
    Summary:
    
    Regressions were introduced in the last Firefox update.
    
    Software Description:
    - firefox: Mozilla Open Source web browser
    
    Details:
    
    USN-1638-1 fixed vulnerabilities in Firefox. The new packages introduced
    regressions in cookies handling and the User Agent string. This update fixes
    the problem.
    
    Original advisory details:
    
     Gary Kwong, Jesse Ruderman, Christian Holler, Bob Clary, Kyle Huey, Ed
     Morley, Chris Lord, Boris Zbarsky, Julian Seward, Bill McCloskey, and
     Andrew McCreight discovered multiple memory safety issues affecting
     Firefox. If the user were tricked into opening a specially crafted page, an
     attacker could possibly exploit these to cause a denial of service via
     application crash, or potentially execute code with the privileges of the
     user invoking Firefox. (CVE-2012-5842, CVE-2012-5843)
     
     Atte Kettunen discovered a buffer overflow while rendering GIF format
     images. An attacker could exploit this to possibly execute arbitrary code
     as the user invoking Firefox. (CVE-2012-4202)
     
     It was discovered that the evalInSandbox function's JavaScript sandbox
     context could be circumvented. An attacker could exploit this to perform a
     cross-site scripting (XSS) attack or steal a copy of a local file if the
     user has installed an add-on vulnerable to this attack. With cross-site
     scripting vulnerabilities, if a user were tricked into viewing a specially
     crafted page, a remote attacker could exploit this to modify the contents,
     or steal confidential data, within the same domain. (CVE-2012-4201)
     
     Jonathan Stephens discovered that combining vectors involving the setting
     of Cascading Style Sheets (CSS) properties in conjunction with SVG text
     could cause Firefox to crash. If a user were tricked into opening a
     malicious web page, an attacker could cause a denial of service via
     application crash or execute arbitrary code with the privliges of the user
     invoking the program. (CVE-2012-5836)
     
     It was discovered that if a javascript: URL is selected from the list of
     Firefox "new tab" page, the script will inherit the privileges of the
     privileged "new tab" page. This allows for the execution of locally
     installed programs if a user can be convinced to save a bookmark of a
     malicious javascript: URL. (CVE-2012-4203)
     
     Scott Bell discovered a memory corruption issue in the JavaScript engine.
     If a user were tricked into opening a malicious website, an attacker could
     exploit this to execute arbitrary JavaScript code within the context of
     another website or arbitrary code as the user invoking the program.
     (CVE-2012-4204)
     
     Gabor Krizsanits discovered that XMLHttpRequest objects created within
     sandboxes have the system principal instead of the sandbox principal. This
     can lead to cross-site request forgery (CSRF) or information theft via an
     add-on running untrusted code in a sandbox. (CVE-2012-4205)
     
     Peter Van der Beken discovered XrayWrapper implementation in Firefox does
     not consider the compartment during property filtering. An attacker could
     use this to bypass intended chrome-only restrictions on reading DOM object
     properties via a crafted web site. (CVE-2012-4208)
     
     Bobby Holley discovered that cross-origin wrappers were allowing write
     actions on objects when only read actions should have been properly
     allowed. This can lead to cross-site scripting (XSS) attacks. With
     cross-site scripting vulnerabilities, if a user were tricked into viewing a
     specially crafted page, a remote attacker could exploit this to modify the
     contents, or steal confidential data, within the same domain.
     (CVE-2012-5841)
     
     Masato Kinugawa discovered that when HZ-GB-2312 charset encoding is used
     for text, the "~" character will destroy another character near the chunk
     delimiter. This can lead to a cross-site scripting (XSS) attack in pages
     encoded in HZ-GB-2312. With cross-site scripting vulnerabilities, if a user
     were tricked into viewing a specially crafted page, a remote attacker could
     exploit this to modify the contents, or steal confidential data, within
     the same domain. (CVE-2012-4207)
     
     Masato Kinugawa discovered that scripts entered into the Developer Toolbar
     could run in a chrome privileged context. An attacker could use this
     vulnerability to conduct cross-site scripting (XSS) attacks or execute
     arbitrary code as the user invoking Firefox. With cross-site scripting
     vulnerabilities, if a user were tricked into viewing a specially crafted
     page, a remote attacker could exploit this to modify the contents, or
     steal confidential data, within the same domain. (CVE-2012-5837)
     
     Mariusz Mlynski discovered that the location property can be accessed by
     binary plugins through top.location with a frame whose name attribute's
     value is set to "top". This can allow for possible cross-site scripting
     (XSS) attacks through plugins. With cross-site scripting vulnerabilities,
     if a user were tricked into viewing a specially crafted page, a remote
     attacker could exploit this to modify the contents, or steal confidential
     data, within the same domain. (CVE-2012-4209)
     
     Mariusz Mlynski discovered that when a maliciously crafted stylesheet is
     inspected in the Style Inspector, HTML and CSS can run in a chrome
     privileged context without being properly sanitized first. If a user were
     tricked into opening a malicious web page, an attacker could execute
     arbitrary code with the privliges of the user invoking the program.
     (CVE-2012-4210)
     
     Abhishek Arya discovered multiple use-after-free and buffer overflow issues
     in Firefox. If a user were tricked into opening a malicious page, an
     attacker could exploit these to execute arbitrary code as the user invoking
     the program. (CVE-2012-4214, CVE-2012-4215, CVE-2012-4216, CVE-2012-5829,
     CVE-2012-5839, CVE-2012-5840, CVE-2012-4212, CVE-2012-4213, CVE-2012-4217,
     CVE-2012-4218)
     
     Several memory corruption flaws were discovered in Firefox. If a user were
     tricked into opening a malicious page, an attacker could exploit these to
     execute arbitrary code as the user invoking the program. (CVE-2012-5830,
     CVE-2012-5833, CVE-2012-5835, CVE-2012-5838)
    
    Update instructions:
    
    The problem can be corrected by updating your system to the following
    package versions:
    
    Ubuntu 12.10:
      firefox                         17.0.1+build1-0ubuntu0.12.10.1
    
    Ubuntu 12.04 LTS:
      firefox                         17.0.1+build1-0ubuntu0.12.04.1
    
    Ubuntu 11.10:
      firefox                         17.0.1+build1-0ubuntu0.11.10.1
    
    Ubuntu 10.04 LTS:
      firefox                         17.0.1+build1-0ubuntu0.10.04.1
    
    After a standard system update you need to restart Firefox to make all
    the necessary changes.
    
    References:
      http://www.ubuntu.com/usn/usn-1638-3
      http://www.ubuntu.com/usn/usn-1638-1
      https://launchpad.net/bugs/1082446, https://launchpad.net/bugs/1084548
    
    Package Information:
      https://launchpad.net/ubuntu/+source/firefox/17.0.1+build1-0ubuntu0.12.10.1
      https://launchpad.net/ubuntu/+source/firefox/17.0.1+build1-0ubuntu0.12.04.1
      https://launchpad.net/ubuntu/+source/firefox/17.0.1+build1-0ubuntu0.11.10.1
      https://launchpad.net/ubuntu/+source/firefox/17.0.1+build1-0ubuntu0.10.04.1
    
    
    
    
    
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