[MFSA-2017-13] Security vulnerabilities fixed in Thunderbird 52.1

CVE-2016-10196: Vulnerabilities in Libevent library (high)
Three vulnerabilities were reported in the Libevent library that allow for out-of-bounds reads and denial of service (DoS) attacks. These were fixed in the Libevent library and these changes were ported to Mozilla code.

CVE-2017-5429: Memory safety bugs fixed in Firefox 53, Firefox ESR 45.9, Firefox ESR 52.1, and Thunderbird 52.1 (critical)
Mozilla developers and community members Christian Holler, Jon Coppeard, Marcia Knous, David Baron, Mats Palmgren, Ronald Crane, Bob Clary, and Chris Peterson reported memory safety bugs present in Firefox 52, Firefox ESR 45.8, Firefox ESR 52, and Thunderbird 52. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.

CVE-2017-5430: Memory safety bugs fixed in Firefox 53, Firefox ESR 52.1, Thunderbird 52.1 (critical)
Mozilla developers and community members Christian Holler, Jon Coppeard, Milan Sreckovic, Tyson Smith, Ronald Crane, Randell Jesup, Philipp, Tooru Fujisawa, and Kan-Ru Chen reported memory safety bugs present in Firefox 52, Firefox ESR 52, and Thunderbird 52. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.

CVE-2017-5432: Use-after-free in text input selection (high)
A use-after-free vulnerability occurs during certain text input selection resulting in a potentially exploitable crash.

CVE-2017-5433: Use-after-free in SMIL animation functions (critical)
A use-after-free vulnerability in SMIL animation functions occurs when pointers to animation elements in an array are dropped from the animation controller while still in use. This results in a potentially exploitable crash.

CVE-2017-5434: Use-after-free during focus handling (high)
A use-after-free vulnerability occurs when redirecting focus handling which results in a potentially exploitable crash.

CVE-2017-5435: Use-after-free during transaction processing in the editor (critical)
A use-after-free vulnerability occurs during transaction processing in the editor during design mode interactions. This results in a potentially exploitable crash.

CVE-2017-5436: Out-of-bounds write with malicious font in Graphite 2 (critical)
An out-of-bounds write in the Graphite 2 library triggered with a maliciously crafted Graphite font. This results in a potentially exploitable crash. This issue was fixed in the Graphite 2 library as well as Mozilla products.

CVE-2017-5438: Use-after-free in nsAutoPtr during XSLT processing (high)
A use-after-free vulnerability during XSLT processing due to the result handler being held by a freed handler during handling. This results in a potentially exploitable crash.

CVE-2017-5439: Use-after-free in nsTArray Length() during XSLT processing (high)
A use-after-free vulnerability during XSLT processing due to poor handling of template parameters. This results in a potentially exploitable crash.

CVE-2017-5440: Use-after-free in txExecutionState destructor during XSLT processing (high)
A use-after-free vulnerability during XSLT processing due to a failure to propagate error conditions during matching while evaluating context, leading to objects being used when they no longer exist. This results in a potentially exploitable crash.

CVE-2017-5441: Use-after-free with selection during scroll events (high)
A use-after-free vulnerability when holding a selection during scroll events. This results in a potentially exploitable crash.

CVE-2017-5442: Use-after-free during style changes (high)
A use-after-free vulnerability during changes in style when manipulating DOM elements. This results in a potentially exploitable crash.

CVE-2017-5443: Out-of-bounds write during BinHex decoding (high)
An out-of-bounds write vulnerability while decoding improperly formed BinHex format archives.

CVE-2017-5444: Buffer overflow while parsing application/http-index-format content (high)
A buffer overflow vulnerability while parsing <code>application/http-index-format</code> format content when the header contains improperly formatted data. This allows for an out-of-bounds read of data from memory.

CVE-2017-5445: Uninitialized values used while parsing application/http-index-format content (moderate)
A vulnerability while parsing <code>application/http-index-format</code> format content where uninitialized values are used to create an array. This could allow the reading of uninitialized memory into the arrays affected.

CVE-2017-5446: Out-of-bounds read when HTTP/2 DATA frames are sent with incorrect data (high)
An out-of-bounds read when an HTTP/2 connection to a servers sends <code>DATA</code> frames with incorrect data content. This leads to a potentially exploitable crash.

CVE-2017-5447: Out-of-bounds read during glyph processing (high)
An out-of-bounds read during the processing of glyph widths during text layout. This results in a potentially exploitable crash and could allow an attacker to read otherwise inaccessible memory.

CVE-2017-5449: Crash during bidirectional unicode manipulation with animation (moderate)
A possibly exploitable crash triggered during layout and manipulation of bidirectional unicode text in concert with CSS animations.

CVE-2017-5451: Addressbar spoofing with onblur event (moderate)
A mechanism to spoof the addressbar through the user interaction on the addressbar and the <code>onblur</code> event. The event could be used by script to affect text display to make the loaded site appear to be different from the one actually loaded within the addressbar.

CVE-2017-5454: Sandbox escape allowing file system read access through file picker (high)
A mechanism to bypass file system access protections in the sandbox to use the file picker to access different files than those selected in the file picker through the use of relative paths. This allows for read only access to the local file system.

CVE-2017-5459: Buffer overflow in WebGL (critical)
A buffer overflow in WebGL triggerable by web content, resulting in a potentially exploitable crash.

CVE-2017-5460: Use-after-free in frame selection (high)
A use-after-free vulnerability in frame selection triggered by a combination of malicious script content and key presses by a user. This results in a potentially exploitable crash.

CVE-2017-5461: Out-of-bounds write in Base64 encoding in NSS (critical)
An out-of-bounds write during Base64 decoding operation in the Network Security Services (NSS) library due to insufficient memory being allocated to the buffer. This results in a potentially exploitable crash. The NSS library has been updated to fix this issue to address this issue and Firefox ESR 52.1 has been updated with NSS version 3.28.4.

CVE-2017-5462: DRBG flaw in NSS (moderate)
A flaw in DRBG number generation within the Network Security Services (NSS) library where the internal state V does not correctly carry bits over. The NSS library has been updated to fix this issue to address this issue and Firefox ESR 52.1 has been updated with NSS version 3.28.4.

CVE-2017-5464: Memory corruption with accessibility and DOM manipulation (high)
During DOM manipulations of the accessibility tree through script, the DOM tree can become out of sync with the accessibility tree, leading to memory corruption and a potentially exploitable crash.

CVE-2017-5465: Out-of-bounds read in ConvolvePixel (high)
An out-of-bounds read while processing SVG content in <code>ConvolvePixel</code>. This results in a crash and also allows for otherwise inaccessible memory being copied into SVG graphic content, which could then displayed.

CVE-2017-5466: Origin confusion when reloading isolated data:text/html URL (critical)
If a page is loaded from an original site through a hyperlink and contains a redirect to a <code>data:text/html</code> URL, triggering a reload will run the reloaded <code>data:text/html</code> page with its origin set incorrectly. This allows for a cross-site scripting (XSS) attack.

CVE-2017-5467: Memory corruption when drawing Skia content (moderate)
A potential memory corruption and crash when using Skia content when drawing content outside of the bounds of a clipping region.

CVE-2017-5469: Potential Buffer overflow in flex-generated code (high)
Fixed potential buffer overflows in generated Firefox code due to CVE-2016-6354 issue in Flex.