Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.

MozillaFirefox, MozillaFirefox-branding-SLE, mozilla-nspr and mozilla-nss were updated to fix nine security issues. Mozilla Firefox was updated to version 45.3.0 ESR. mozilla-nss was updated to version 3.21.1, mozilla-nspr to version 4.12. These security issues were fixed in 45.3.0ESR :

  - CVE-2016-2835/CVE-2016-2836: Miscellaneous memory safety     hazards (rv:48.0 / rv:45.3) (MFSA 2016-62)

  - CVE-2016-2830: Favicon network connection can persist     when page is closed (MFSA 2016-63)

  - CVE-2016-2838: Buffer overflow rendering SVG with     bidirectional content (MFSA 2016-64)

  - CVE-2016-2839: Cairo rendering crash due to memory     allocation issue with FFmpeg 0.10 (MFSA 2016-65)

  - CVE-2016-5252: Stack underflow during 2D graphics     rendering (MFSA 2016-67)

  - CVE-2016-5254: Use-after-free when using alt key and     toplevel menus (MFSA 2016-70)

  - CVE-2016-5258: Use-after-free in DTLS during WebRTC     session shutdown (MFSA 2016-72)

  - CVE-2016-5259: Use-after-free in service workers with     nested sync events (MFSA 2016-73)

  - CVE-2016-5262: Scripts on marquee tag can execute in     sandboxed iframes (MFSA 2016-76)

  - CVE-2016-2837: Buffer overflow in ClearKey Content     Decryption Module (CDM) during video playback (MFSA     2016-77)

  - CVE-2016-5263: Type confusion in display transformation     (MFSA 2016-78)

  - CVE-2016-5264: Use-after-free when applying SVG effects     (MFSA 2016-79)

  - CVE-2016-5265: Same-origin policy violation using local     HTML file and saved shortcut file (MFSA 2016-80)

  - CVE-2016-6354: Fix for possible buffer overrun     (bsc#990856) Security issues fixed in 45.2.0.ESR :

  - CVE-2016-2834: Memory safety bugs in NSS (MFSA 2016-61)     (bsc#983639).

  - CVE-2016-2824: Out-of-bounds write with WebGL shader     (MFSA 2016-53) (bsc#983651).

  - CVE-2016-2822: Addressbar spoofing though the SELECT     element (MFSA 2016-52) (bsc#983652).

  - CVE-2016-2821: Use-after-free deleting tables from a     contenteditable document (MFSA 2016-51) (bsc#983653).

  - CVE-2016-2819: Buffer overflow parsing HTML5 fragments     (MFSA 2016-50) (bsc#983655).

  - CVE-2016-2828: Use-after-free when textures are used in     WebGL operations after recycle pool destruction (MFSA     2016-56) (bsc#983646).

  - CVE-2016-2831: Entering fullscreen and persistent     pointerlock without user permission (MFSA 2016-58)     (bsc#983643).

  - CVE-2016-2815, CVE-2016-2818: Miscellaneous memory     safety hazards (MFSA 2016-49) (bsc#983638)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

MozillaFirefox, MozillaFirefox-branding-SLE and mozilla-nss were updated to fix nine security issues. Mozilla Firefox was updated to version 45.2.0 ESR. mozilla-nss was updated to version 3.21.1. These security issues were fixed :

  - CVE-2016-2834: Memory safety bugs in NSS (MFSA 2016-61)     (bsc#983639).

  - CVE-2016-2824: Out-of-bounds write with WebGL shader     (MFSA 2016-53) (bsc#983651).

  - CVE-2016-2822: Addressbar spoofing though the SELECT     element (MFSA 2016-52) (bsc#983652).

  - CVE-2016-2821: Use-after-free deleting tables from a     contenteditable document (MFSA 2016-51) (bsc#983653).

  - CVE-2016-2819: Buffer overflow parsing HTML5 fragments     (MFSA 2016-50) (bsc#983655).

  - CVE-2016-2828: Use-after-free when textures are used in     WebGL operations after recycle pool destruction (MFSA     2016-56) (bsc#983646).

  - CVE-2016-2831: Entering fullscreen and persistent     pointerlock without user permission (MFSA 2016-58)     (bsc#983643).

  - CVE-2016-2815, CVE-2016-2818: Miscellaneous memory     safety hazards (MFSA 2016-49) (bsc#983638)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

MozillaFirefox, MozillaFirefox-branding-SLE, mozilla-nss and mozilla-nspr were updated to fix nine security issues.

Mozilla Firefox was updated to version 45.2.0 ESR. mozilla-nss was updated to version 3.21.1.

These security issues were fixed :

  - CVE-2016-2834: Memory safety bugs in NSS (MFSA 2016-61)     (bsc#983639).

  - CVE-2016-2824: Out-of-bounds write with WebGL shader     (MFSA 2016-53) (bsc#983651).

  - CVE-2016-2822: Addressbar spoofing though the SELECT     element (MFSA 2016-52) (bsc#983652).

  - CVE-2016-2821: Use-after-free deleting tables from a     contenteditable document (MFSA 2016-51) (bsc#983653).

  - CVE-2016-2819: Buffer overflow parsing HTML5 fragments     (MFSA 2016-50) (bsc#983655).

  - CVE-2016-2828: Use-after-free when textures are used in     WebGL operations after recycle pool destruction (MFSA     2016-56) (bsc#983646).

  - CVE-2016-2831: Entering fullscreen and persistent     pointerlock without user permission (MFSA 2016-58)     (bsc#983643).

  - CVE-2016-2815, CVE-2016-2818: Miscellaneous memory     safety hazards (MFSA 2016-49) (bsc#983638)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Versions of Mozilla Firefox earlier than 47.0 are unpatched for the following vulnerabilities :

 - Multiple memory corruption issues exist that allow an unauthenticated, remote attacker to execute arbitrary code. (CVE-2016-2815, CVE-2016-2818)
 - An overflow condition exists that is triggered when handling HTML5 fragments in foreign contexts (e.g., under <svg> nodes).  An unauthenticated, remote attacker can exploit this to cause a heap-based buffer overflow, resulting in the execution of arbitrary code. (CVE-2016-2819)
 - A use-after-free error exists that is triggered when deleting DOM table elements in 'contenteditable' mode.  An unauthenticated, remote attacker can exploit this to dereference already freed memory, resulting in the execution of arbitrary code. (CVE-2016-2821)
 - A spoofing vulnerability exists due to improper handling of SELECT elements.  An unauthenticated, remote attacker can exploit this to spoof the contents of the address bar. (CVE-2016-2822)
 - A same-origin bypass vulnerability exists that is triggered when handling 'location.host' property values set after the creation of invalid 'data:' URIs.  An unauthenticated, remote attacker can exploit this to partially bypass same-origin policy protections. (CVE-2016-2825)
 - A use-after-free error exists that is triggered when destroying the recycle pool of a texture used during the processing of WebGL content.  An unauthenticated, remote attacker can exploit this to dereference already freed memory, resulting in the execution of arbitrary code. (CVE-2016-2828)
 - A flaw exists in 'browser/modules/webrtcUI.jsm' that is triggered when handling a large number of permission requests over a small period of time.  An unauthenticated, remote attacker can exploit this to cause the incorrect icon to be displayed in a given permission request, potentially resulting in a user approving unintended permission requests. (CVE-2016-2829)
 - A flaw exists that is triggered when handling paired fullscreen and pointerlock requests in combination with closing windows.  An unauthenticated, remote attacker can exploit this to create an unauthorized pointerlock, resulting in a denial of service condition.  Additionally, an attacker can exploit this to conduct spoofing and clickjacking attacks. (CVE-2016-2831)
 - An information disclosure vulnerability exists that is triggered when handling CSS pseudo-classes.  An unauthenticated, remote attacker can exploit this disclose a list of installed plugins. (CVE-2016-2832)
 - A Content Security Policy (CSP) bypass exists that is triggered when handling specially crafted cross-domain Java applets.  An unauthenticated, remote attacker can exploit this to bypass the CSP and conduct cross-site scripting attacks. (CVE-2016-2833)
 - Multiple unspecified flaws exist in the Mozilla Network Security Services (NSS) component that allow an attacker to have an unspecified impact. (CVE-2016-2834)

Versions of Mozilla Firefox earlier than 45.2 are unpatched for the following vulnerabilities :

 - Multiple memory corruption issues exist that allow an unauthenticated, remote attacker to execute arbitrary code. (CVE-2016-2815, CVE-2016-2818)
 - An overflow condition exists that is triggered when handling HTML5 fragments in foreign contexts (e.g., under <svg> nodes).  An unauthenticated, remote attacker can exploit this to cause a heap-based buffer overflow, resulting in the execution of arbitrary code. (CVE-2016-2819)
 - A use-after-free error exists that is triggered when deleting DOM table elements in 'contenteditable' mode.  An unauthenticated, remote attacker can exploit this to dereference already freed memory, resulting in the execution of arbitrary code. (CVE-2016-2821)
 - A spoofing vulnerability exists due to improper handling of SELECT elements.  An unauthenticated, remote attacker can exploit this to spoof the contents of the address bar. (CVE-2016-2822)
 - An out-of-bounds write flaw in 'TSymbolTableLevel' is triggered when size values for array writes are not properly checked during WebGL shader operations. This may allow a context-dependent attacker to potentially execute arbitrary code. (CVE-2016-2824)
 - A flaw exists in the Windows updater utility's 'toolkit/mozapps/update/updater/updater.cpp' extraction of files from MAR archives.  These files are not properly locked for writing, which may allow a local attacker to replace these files and potentially leverage them to gain elevated privileges. (CVE-2016-2826)
 - A use-after-free error exists that is triggered when destroying the recycle pool of a texture used during the processing of WebGL content.  An unauthenticated, remote attacker can exploit this to dereference already freed memory, resulting in the execution of arbitrary code. (CVE-2016-2828)
 - A flaw exists that is triggered when handling paired fullscreen and pointerlock requests in combination with closing windows.  An unauthenticated, remote attacker can exploit this to create an unauthorized pointerlock, resulting in a denial of service condition.  Additionally, an attacker can exploit this to conduct spoofing and clickjacking attacks. (CVE-2016-2831)

Multiple security issues have been found in the Mozilla Firefox web browser: Multiple memory safety errors, buffer overflows and other implementation errors may lead to the execution of arbitrary code or spoofing.

Wait, Firefox? No more references to Iceweasel? That's right, Debian no longer applies a custom branding. Please see these links for further information: https://glandium.org/blog/?p=3622 https://en.wikipedia.org/wiki/Mozilla_software_rebranded_by_Debian

Debian follows the extended support releases (ESR) of Firefox. Support for the 38.x series has ended, so starting with this update we're now following the 45.x releases and this update to the next ESR is also the point where we reapply the original branding.

Transition packages for the iceweasel packages are provided which automatically upgrade to the new version. Since new binary packages need to be installed, make sure to allow that in your upgrade procedure (e.g. by using 'apt-get dist-upgrade' instead of 'apt-get upgrade').

For Debian 7 'Wheezy', these problems have been fixed in version 45.2.0esr-1~deb7u1.

We recommend that you upgrade your firefox-esr packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update upgrades Firefox to version 45.2.0 ESR.

Security Fix(es) :

  - Multiple flaws were found in the processing of malformed     web content. 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-2016-2818, CVE-2016-2819, CVE-2016-2821,     CVE-2016-2822, CVE-2016-2828, CVE-2016-2831)

An update for firefox is now available for Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Mozilla Firefox is an open source web browser.

This update upgrades Firefox to version 45.2.0 ESR.

Security Fix(es) :

* Multiple flaws were found in the processing of malformed web content. 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-2016-2818, CVE-2016-2819, CVE-2016-2821, CVE-2016-2822, CVE-2016-2828, CVE-2016-2831)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges sushi Anton Larsson, firehack, Jordi Chancel, Christian Holler, Sylvestre Ledru, Tyson Smith, jomo, Jesse Ruderman, Julian Seward, Timothy Nikkel, Karl Tomlinson, Olli Pettay, and Gary Kwong as the original reporters.

This update to Mozilla Firefox 47 fixes the following issues (boo#983549) :

Security fixes :

  - CVE-2016-2815/CVE-2016-2818: Miscellaneous memory safety     hazards (boo#983638 MFSA 2016-49)

  - CVE-2016-2819: Buffer overflow parsing HTML5 fragments     (boo#983655 MFSA 2016-50)

  - CVE-2016-2821: Use-after-free deleting tables from a     contenteditable document (boo#983653 MFSA 2016-51)

  - CVE-2016-2822: Addressbar spoofing though the SELECT     element (boo#983652 MFSA 2016-52)

  - CVE-2016-2824: Out-of-bounds write with WebGL shader     (boo#983651 MFSA 2016-53)

  - CVE-2016-2825: Partial same-origin-policy through     setting location.host through data URI (boo#983649 MFSA     2016-54)

  - CVE-2016-2828: Use-after-free when textures are used in     WebGL operations after recycle pool destruction     (boo#983646 MFSA 2016-56)

  - CVE-2016-2829: Incorrect icon displayed on permissions     notifications (boo#983644 MFSA 2016-57)

  - CVE-2016-2831: Entering fullscreen and persistent     pointerlock without user permission (boo#983643 MFSA     2016-58)

  - CVE-2016-2832: Information disclosure of disabled     plugins through CSS pseudo-classes (boo#983632 MFSA     2016-59)

  - CVE-2016-2833: Java applets bypass CSP protections     (boo#983640 MFSA 2016-60)

Mozilla NSS was updated to 3.23 to address the following vulnerabilities :

  - CVE-2016-2834: Memory safety bugs (boo#983639     MFSA-2016-61)

    The following non-security changes are included :

  - Enable VP9 video codec for users with fast machines

  - Embedded YouTube videos now play with HTML5 video if     Flash is not installed

  - View and search open tabs from your smartphone or     another computer in a sidebar

  - Allow no-cache on back/forward navigations for https     resources

    The following packaging changes are included :

  - boo#981695: cleanup configure options, notably removing     GStreamer support which is gone from FF

  - boo#980384: enable build with PIE and full relro on     x86_64

    The following new functionality is provided :

  - ChaCha20/Poly1305 cipher and TLS cipher suites now     supported

  - The list of TLS extensions sent in the TLS handshake has     been reordered to increase compatibility of the Extended     Master Secret with with servers

This update to Mozilla Firefox 47 fixes the following issues (boo#983549) :

Security fixes :

  - CVE-2016-2815/CVE-2016-2818: Miscellaneous memory safety     hazards (boo#983638 MFSA 2016-49)

  - CVE-2016-2819: Buffer overflow parsing HTML5 fragments     (boo#983655 MFSA 2016-50)

  - CVE-2016-2821: Use-after-free deleting tables from a     contenteditable document (boo#983653 MFSA 2016-51)

  - CVE-2016-2822: Addressbar spoofing though the SELECT     element (boo#983652 MFSA 2016-52)

  - CVE-2016-2824: Out-of-bounds write with WebGL shader     (boo#983651 MFSA 2016-53)

  - CVE-2016-2825: Partial same-origin-policy through     setting location.host through data URI (boo#983649 MFSA     2016-54)

  - CVE-2016-2828: Use-after-free when textures are used in     WebGL operations after recycle pool destruction     (boo#983646 MFSA 2016-56)

  - CVE-2016-2829: Incorrect icon displayed on permissions     notifications (boo#983644 MFSA 2016-57)

  - CVE-2016-2831: Entering fullscreen and persistent     pointerlock without user permission (boo#983643 MFSA     2016-58)

  - CVE-2016-2832: Information disclosure of disabled     plugins through CSS pseudo-classes (boo#983632 MFSA     2016-59)

  - CVE-2016-2833: Java applets bypass CSP protections     (boo#983640 MFSA 2016-60)

Mozilla NSS was updated to 3.23 to address the following vulnerabilities :

  - CVE-2016-2834: Memory safety bugs (boo#983639     MFSA-2016-61) The following non-security changes are     included :

  - Enable VP9 video codec for users with fast machines

  - Embedded YouTube videos now play with HTML5 video if     Flash is not installed

  - View and search open tabs from your smartphone or     another computer in a sidebar

  - Allow no-cache on back/forward navigations for https     resources

The following packaging changes are included :

  - boo#981695: cleanup configure options, notably removing     GStreamer support which is gone from FF

  - boo#980384: enable build with PIE and full relro on     x86_64

The following new functionality is provided :

  - ChaCha20/Poly1305 cipher and TLS cipher suites now     supported

  - The list of TLS extensions sent in the TLS handshake has     been reordered to increase compatibility of the Extended     Master Secret with with servers

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-2993-1 advisory.

    Christian Holler, Gary Kwong, Jesse Ruderman, Tyson Smith, Timothy Nikkel, Sylvestre Ledru, Julian Seward,     Olli Pettay, Karl Tomlinson, Christoph Diehl, Julian Hector, Jan de Mooij, Mats Palmgren, and Tooru     Fujisawa discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a     specially crafted website, an attacker could potentially exploit these to cause a denial of service via     application crash, or execute arbitrary code. (CVE-2016-2815, CVE-2016-2818)

    A buffer overflow was discovered when parsing HTML5 fragments in some circumstances. If a user were     tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a     denial of service via application crash, or execute arbitrary code. (CVE-2016-2819)

    A use-after-free was discovered in contenteditable mode in some circumstances. If a user were tricked in     to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of     service via application crash, or execute arbitrary code. (CVE-2016-2821)

    Jordi Chancel discovered a way to use a persistent menu within a <select> element and place this in an     arbitrary location. If a user were tricked in to opening a specially crafted website, an attacker could     potentially exploit this to spoof the addressbar contents. (CVE-2016-2822)

    Armin Razmdjou that the location.host property can be set to an arbitrary string after creating an invalid     data: URI. If a user were tricked in to opening a specially crafted website, an attacker could potentially     exploit this to bypass some same-origin protections. (CVE-2016-2825)

    A use-after-free was discovered when processing WebGL content in some circumstances. If a user were     tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a     denial of service via application crash, or execute arbitrary code. (CVE-2016-2828)

    Tim McCormack discovered that the permissions notification can show the wrong icon when a page requests     several permissions in quick succession. An attacker could potentially exploit this by tricking the user     in to giving consent for access to the wrong resource. (CVE-2016-2829)

    It was discovered that a pointerlock can be created in a fullscreen window without user consent in some     circumstances, and this pointerlock cannot be cancelled without quitting Firefox. If a user were tricked     in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of     service or conduct clickjacking attacks. (CVE-2016-2831)

    John Schoenick discovered that CSS pseudo-classes can leak information about plugins that are installed     but disabled. An attacker could potentially exploit this to fingerprint users. (CVE-2016-2832)

    Matt Wobensmith discovered that Content Security Policy (CSP) does not block the loading of cross-domain     Java applets when specified by policy. An attacker could potentially exploit this to bypass CSP     protections and conduct cross-site scripting (XSS) attacks. (CVE-2016-2833)

    In addition, multiple unspecified security issues were discovered in NSS. (CVE-2016-2834)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Multiple security issues have been found in the Mozilla Firefox web browser: Multiple memory safety errors, buffer overflows and other implementation errors may lead to the execution of arbitrary code or spoofing.

Wait, Firefox? No more references to Iceweasel? That's right, Debian no longer applies a custom branding. Please see these links for further information: https://glandium.org/blog/?p=3622, https://en.wikipedia.org/wiki/Mozilla_software_rebranded_by_Debian

Debian follows the extended support releases (ESR) of Firefox. Support for the 38.x series has ended, so starting with this update we're now following the 45.x releases and this update to the next ESR is also the point where we reapply the original branding.

Transition packages for the iceweasel packages are provided which automatically upgrade to the new version. Since new binary packages need to be installed, make sure to allow that in your upgrade procedure (e.g. by using 'apt-get dist-upgrade' instead of 'apt-get upgrade').

The version of Firefox installed on the remote Windows host is prior to 47. It is, therefore, affected by multiple vulnerabilities :

  - Multiple memory corruption issues exist that allow an     unauthenticated, remote attacker to execute arbitrary     code. (CVE-2016-2815, CVE-2016-2818)

  - An overflow condition exists that is triggered when     handling HTML5 fragments in foreign contexts (e.g.,     under <svg> nodes). An unauthenticated, remote attacker     can exploit this to cause a heap-based buffer overflow,     resulting in the execution of arbitrary code.
    (CVE-2016-2819)

  - A use-after-free error exists that is triggered when     deleting DOM table elements in 'contenteditable' mode.
    An unauthenticated, remote attacker can exploit this to     dereference already freed memory, resulting in the     execution of arbitrary code. (CVE-2016-2821)

  - A spoofing vulnerability exists due to improper handling     of SELECT elements. An unauthenticated, remote attacker     can exploit this to spoof the contents of the address     bar. (CVE-2016-2822)

  - An out-of-bounds write error exists in the ANGLE     graphics library due to improper size checking while     writing to an array during WebGL shader operations. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-2824)

  - A same-origin bypass vulnerability exists that is     triggered when handling location.host property values     set after the creation of invalid 'data:' URIs. An     unauthenticated, remote attacker can exploit this to     partially bypass same-origin policy protections.
    (CVE-2016-2825)

  - A privilege escalation vulnerability exists in the     Windows updater utility due to improper extraction of     files from MAR archives. A local attacker can exploit     this to replace the extracted files, allowing the     attacker to gain elevated privileges. (CVE-2016-2826)

  - A use-after-free error exists that is triggered when     destroying the recycle pool of a texture used during the     processing of WebGL content. An unauthenticated, remote     attacker can exploit this to dereference already freed     memory, resulting in the execution of arbitrary code.
    (CVE-2016-2828)

  - A flaw exists in browser/modules/webrtcUI.jsm that is     triggered when handling a large number of permission     requests over a small period of time. An     unauthenticated, remote attacker can exploit this to     cause the incorrect icon to be displayed in a given     permission request, potentially resulting in a user     approving unintended permission requests.
    (CVE-2016-2829)

  - A flaw exists that is triggered when handling paired     fullscreen and pointerlock requests in combination with     closing windows. An unauthenticated, remote attacker can     exploit this to create an unauthorized pointerlock,     resulting in a denial of service condition.
    Additionally, an attacker can exploit this to conduct     spoofing and clickjacking attacks. (CVE-2016-2831)

  - An information disclosure vulnerability exists that is     triggered when handling CSS pseudo-classes. An     unauthenticated, remote attacker can exploit this     disclose a list of installed plugins. (CVE-2016-2832)

  - A Content Security Policy (CSP) bypass exists that is     triggered when handling specially crafted cross-domain     Java applets. An unauthenticated, remote attacker can     exploit this to bypass the CSP and conduct cross-site     scripting attacks. (CVE-2016-2833)

  - Multiple unspecified flaws exist in the Mozilla Network     Security Services (NSS) component that allow an attacker     to have an unspecified impact. (CVE-2016-2834)

The version of Firefox ESR installed on the remote Windows host is 45.x prior to 45.2. It is, therefore, affected by multiple vulnerabilities :

  - Multiple memory corruption issues exist that allow an     unauthenticated, remote attacker to execute arbitrary     code. (CVE-2016-2818)

  - An overflow condition exists that is triggered when     handling HTML5 fragments in foreign contexts (e.g.,     under <svg> nodes). An unauthenticated, remote attacker     can exploit this to cause a heap-based buffer overflow,     resulting in the execution of arbitrary code.
    (CVE-2016-2819)

  - A use-after-free error exists that is triggered when     deleting DOM table elements in 'contenteditable' mode.
    An unauthenticated, remote attacker can exploit this to     dereference already freed memory, resulting in the     execution of arbitrary code. (CVE-2016-2821)

  - A spoofing vulnerability exists due to improper handling     of SELECT elements. An unauthenticated, remote attacker     can exploit this to spoof the contents of the address     bar. (CVE-2016-2822)

  - An out-of-bounds write error exists in the ANGLE     graphics library due to improper size checking while     writing to an array during WebGL shader operations. An     unauthenticated, remote attacker can exploit this to     execute arbitrary code. (CVE-2016-2824)

  - A privilege escalation vulnerability exists in the     Windows updater utility due to improper extraction of     files from MAR archives. A local attacker can exploit     this to replace the extracted files, allowing the     attacker to gain elevated privileges. (CVE-2016-2826)

  - A use-after-free error exists that is triggered when     destroying the recycle pool of a texture used during the     processing of WebGL content. An unauthenticated, remote     attacker can exploit this to dereference already freed     memory, resulting in the execution of arbitrary code.
    (CVE-2016-2828)

  - A flaw exists that is triggered when handling paired     fullscreen and pointerlock requests in combination with     closing windows. An unauthenticated, remote attacker can     exploit this to create an unauthorized pointerlock,     resulting in a denial of service condition.
    Additionally, an attacker can exploit this to conduct     spoofing and clickjacking attacks. (CVE-2016-2831)

The version of Firefox installed on the remote Mac OS X host is prior to 47. It is, therefore, affected by multiple vulnerabilities :

  - Multiple memory corruption issues exist that allow an     unauthenticated, remote attacker to execute arbitrary     code. (CVE-2016-2815, CVE-2016-2818)

  - An overflow condition exists that is triggered when     handling HTML5 fragments in foreign contexts (e.g.,     under <svg> nodes). An unauthenticated, remote attacker     can exploit this to cause a heap-based buffer overflow,     resulting in the execution of arbitrary code.
    (CVE-2016-2819)

  - A use-after-free error exists that is triggered when     deleting DOM table elements in 'contenteditable' mode.
    An unauthenticated, remote attacker can exploit this to     dereference already freed memory, resulting in the     execution of arbitrary code. (CVE-2016-2821)

  - A spoofing vulnerability exists due to improper handling     of SELECT elements. An unauthenticated, remote attacker     can exploit this to spoof the contents of the address     bar. (CVE-2016-2822)

  - A same-origin bypass vulnerability exists that is     triggered when handling location.host property values     set after the creation of invalid 'data:' URIs. An     unauthenticated, remote attacker can exploit this to     partially bypass same-origin policy protections.
    (CVE-2016-2825)

  - A use-after-free error exists that is triggered when     destroying the recycle pool of a texture used during the     processing of WebGL content. An unauthenticated, remote     attacker can exploit this to dereference already freed     memory, resulting in the execution of arbitrary code.
    (CVE-2016-2828)

  - A flaw exists in browser/modules/webrtcUI.jsm that is     triggered when handling a large number of permission     requests over a small period of time. An     unauthenticated, remote attacker can exploit this to     cause the incorrect icon to be displayed in a given     permission request, potentially resulting in a user     approving unintended permission requests.
    (CVE-2016-2829)

  - A flaw exists that is triggered when handling paired     fullscreen and pointerlock requests in combination with     closing windows. An unauthenticated, remote attacker can     exploit this to create an unauthorized pointerlock,     resulting in a denial of service condition.
    Additionally, an attacker can exploit this to conduct     spoofing and clickjacking attacks. (CVE-2016-2831)

  - An information disclosure vulnerability exists that is     triggered when handling CSS pseudo-classes. An     unauthenticated, remote attacker can exploit this     disclose a list of installed plugins. (CVE-2016-2832)

  - A Content Security Policy (CSP) bypass exists that is     triggered when handling specially crafted cross-domain     Java applets. An unauthenticated, remote attacker can     exploit this to bypass the CSP and conduct cross-site     scripting attacks. (CVE-2016-2833)

  - Multiple unspecified flaws exist in the Mozilla Network     Security Services (NSS) component that allow an attacker     to have an unspecified impact. (CVE-2016-2834)

The version of Firefox ESR installed on the remote Mac OS X host is 45.x prior to 45.2. It is, therefore, affected by multiple vulnerabilities :

  - Multiple memory corruption issues exist that allow an     unauthenticated, remote attacker to execute arbitrary     code. (CVE-2016-2818)

  - An overflow condition exists that is triggered when     handling HTML5 fragments in foreign contexts (e.g.,     under <svg> nodes). An unauthenticated, remote attacker     can exploit this to cause a heap-based buffer overflow,     resulting in the execution of arbitrary code.
    (CVE-2016-2819)

  - A use-after-free error exists that is triggered when     deleting DOM table elements in 'contenteditable' mode.
    An unauthenticated, remote attacker can exploit this to     dereference already freed memory, resulting in the     execution of arbitrary code. (CVE-2016-2821)

  - A spoofing vulnerability exists due to improper handling     of SELECT elements. An unauthenticated, remote attacker     can exploit this to spoof the contents of the address     bar. (CVE-2016-2822)

  - A use-after-free error exists that is triggered when     destroying the recycle pool of a texture used during the     processing of WebGL content. An unauthenticated, remote     attacker can exploit this to dereference already freed     memory, resulting in the execution of arbitrary code.
    (CVE-2016-2828)

  - A flaw exists that is triggered when handling paired     fullscreen and pointerlock requests in combination with     closing windows. An unauthenticated, remote attacker can     exploit this to create an unauthorized pointerlock,     resulting in a denial of service condition.
    Additionally, an attacker can exploit this to conduct     spoofing and clickjacking attacks. (CVE-2016-2831)

From Red Hat Security Advisory 2016:1217 :

An update for firefox is now available for Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6, and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Mozilla Firefox is an open source web browser.

This update upgrades Firefox to version 45.2.0 ESR.

Security Fix(es) :

* Multiple flaws were found in the processing of malformed web content. 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-2016-2818, CVE-2016-2819, CVE-2016-2821, CVE-2016-2822, CVE-2016-2828, CVE-2016-2831)

Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges sushi Anton Larsson, firehack, Jordi Chancel, Christian Holler, Sylvestre Ledru, Tyson Smith, jomo, Jesse Ruderman, Julian Seward, Timothy Nikkel, Karl Tomlinson, Olli Pettay, and Gary Kwong as the original reporters.

Mozilla Foundation reports :

MFSA 2016-49 Miscellaneous memory safety hazards (rv:47.0 / rv:45.2)

MFSA 2016-50 Buffer overflow parsing HTML5 fragments

MFSA 2016-51 Use-after-free deleting tables from a contenteditable document

MFSA 2016-52 Addressbar spoofing though the SELECT element

MFSA 2016-54 Partial same-origin-policy through setting location.host through data URI

MFSA 2016-56 Use-after-free when textures are used in WebGL operations after recycle pool destruction

MFSA 2016-57 Incorrect icon displayed on permissions notifications

MFSA 2016-58 Entering fullscreen and persistent pointerlock without user permission

MFSA 2016-59 Information disclosure of disabled plugins through CSS pseudo-classes

MFSA 2016-60 Java applets bypass CSP protections

ID	Name	Product	Family	Severity
93288	SUSE SLES11 Security Update : MozillaFirefox, MozillaFirefox-branding-SLED, mozilla-nspr / mozilla-nss (SUSE-SU-2016:2061-1)	Nessus	SuSE Local Security Checks	critical
93182	SUSE SLES11 Security Update : MozillaFirefox, MozillaFirefox-branding-SLE / mozilla-nss (SUSE-SU-2016:1799-1)	Nessus	SuSE Local Security Checks	high
93166	SUSE SLED12 / SLES12 Security Update : MozillaFirefox, MozillaFirefox-branding-SLE, mozilla-nspr, mozilla-nss (SUSE-SU-2016:1691-1)	Nessus	SuSE Local Security Checks	high
9383	Mozilla Firefox < 47.0 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	high
9382	Mozilla Firefox ESR < 45.2 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	high
91691	Debian DLA-521-1 : firefox-esr security update	Nessus	Debian Local Security Checks	high
91648	Scientific Linux Security Update : firefox on SL5.x, SL6.x, SL7.x i386/x86_64 (20160608)	Nessus	Scientific Linux Local Security Checks	high
91635	CentOS 5 / 6 / 7 : firefox (CESA-2016:1217)	Nessus	CentOS Local Security Checks	high
91589	openSUSE Security Update : MozillaFirefox / mozilla-nss (openSUSE-2016-714)	Nessus	SuSE Local Security Checks	high
91586	openSUSE Security Update : MozillaFirefox / mozilla-nss (openSUSE-2016-704)	Nessus	SuSE Local Security Checks	high
91557	Ubuntu 14.04 LTS / 16.04 LTS : Firefox vulnerabilities (USN-2993-1)	Nessus	Ubuntu Local Security Checks	high
91550	Debian DSA-3600-1 : firefox-esr - security update	Nessus	Debian Local Security Checks	high
91547	Firefox < 47 Multiple Vulnerabilities	Nessus	Windows	high
91546	Firefox ESR 45.x < 45.2 Multiple Vulnerabilities	Nessus	Windows	high
91545	Firefox < 47 Multiple Vulnerabilities (Mac OS X)	Nessus	MacOS X Local Security Checks	high
91544	Firefox ESR 45.x < 45.2 Multiple Vulnerabilities (Mac OS X)	Nessus	MacOS X Local Security Checks	high
91536	RHEL 5 / 6 / 7 : firefox (RHSA-2016:1217)	Nessus	Red Hat Local Security Checks	high
91535	Oracle Linux 5 / 6 / 7 : firefox (ELSA-2016-1217)	Nessus	Oracle Linux Local Security Checks	high
91509	FreeBSD : mozilla -- multiple vulnerabilities (8065d37b-8e7c-4707-a608-1b0a2b8509c3)	Nessus	FreeBSD Local Security Checks	high

Detections

Analytics

CVE-2016-2821

high

Tenable Plugins

critical

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high

high