CVE-2016-2831

Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 do not ensure that the user approves the fullscreen and pointerlock settings, which allows remote attackers to cause a denial of service (UI outage), or conduct clickjacking or spoofing attacks, via a crafted web site.

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).

This update provides the next stable branch of Firefox, version 45.2.0.

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

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

MozillaFirefox 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)

These non-security issues were fixed:

• bsc#982366: Unknown SSL protocol error in connections
• Fix crashes on aarch64
  • Determine page size at runtime (bsc#984006)
  • Allow aarch64 to work in safe mode (bsc#985659)
• Fix crashes on mainframes

All extensions must now be signed by addons.mozilla.org. Please read README.SUSE for more details.

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

MozillaFirefox 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)

These non-security issues were fixed:

• Fix crashes on aarch64
  • Determine page size at runtime (bsc#984006)
  • Allow aarch64 to work in safe mode (bsc#985659)
• Fix crashes on mainframes

All extensions must now be signed by addons.mozilla.org. Please read README.SUSE for more details.

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

MozillaFirefox 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)

These non-security issues were fixed:

• Fix crashes on aarch64
  • Determine page size at runtime (bsc#984006)
  • Allow aarch64 to work in safe mode (bsc#985659)
• Fix crashes on mainframes
• Temporarily bind Firefox to the first CPU as a hotfix for an apparent race condition (bsc#989196, bsc#990628)

All extensions must now be signed by addons.mozilla.org. Please read README.SUSE for more details.

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)