Memory corruption

Memory safety bugs were reported in Firefox 56 and Firefox ESR 52.4. 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. This vulnerability affects Firefox 57, Firefox ESR 52.5, and Thunderbird...

Design/Logic Flaw

A use-after-free vulnerability can occur during WebRTC connections when interacting with the DTMF timers. This results in a potentially exploitable crash. This vulnerability affects Firefox ESR 52.6 and Firefox 58...

Design/Logic Flaw

Under certain circumstances the "fetch" API can return transient local copies of resources that were sent with a "no-store" or "no-cache" cache header instead of downloading a copy from the network as it should. This can result in previously stored, locally cached data of a website being accessib...

Double free

Use-after-free while manipulating XSL in XSLT documents. This vulnerability affects Thunderbird 45.7, Firefox ESR 45.7, and Firefox 51...

Integer overflow

An error in argument length checking in JavaScript, leading to potential integer overflows or other bounds checking issues. This vulnerability affects Thunderbird 45.5, Firefox ESR 45.5, and Firefox 50...

Design/Logic Flaw

When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not...

Design/Logic Flaw

A use-after-free vulnerability can occur while re-computing layout for a "marquee" element during window resizing where the updated style object is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 52.3, Firefox ESR 52.3, and Firefox...

Design/Logic Flaw

The Mozilla Maintenance Service "helper.exe" application creates a temporary directory writable by non-privileged users. When this is combined with creation of a junction a form of symbolic link, protected files in the target directory of the junction can be deleted by the Mozilla Maintenance...

Code injection

A possibly exploitable crash triggered during layout and manipulation of bidirectional unicode text in concert with CSS animations. This vulnerability affects Thunderbird 52.1, Firefox ESR 52.1, and Firefox 53...

Code injection

The libtremor library has the same flaw as CVE-2018-5146. This library is used by Firefox in place of libvorbis on Android and ARM platforms. This vulnerability affects Firefox ESR 52.7.2 and Firefox 59.0.1...

Design/Logic Flaw

A use-after-free vulnerability can occur when manipulating HTML media elements with media streams, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird 52.6, Firefox ESR 52.6, and Firefox 58...

Buffer overflow

A buffer overflow will occur when viewing a certificate in the certificate manager if the certificate has an extremely long object identifier OID. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 52.3, Firefox ESR 52.3, and Firefox 55...

Design/Logic Flaw

A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird 45.7, Firefox ESR 45.7, and Firefox 51...

Design/Logic Flaw

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. This vulnerability affects Thunderbird 52.1, Firefox ESR 45.9, Firefox ESR 52.1, and Firefox 53...

Design/Logic Flaw

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. This vulnerability affects Thunderbird 52.1,...

Design/Logic Flaw

HTML tags received from the Pocket server will be processed without sanitization and any JavaScript code executed will be run in the "about:pocket-saved" unprivileged page, giving it access to Pocket's messaging API through HTML injection. This vulnerability affects Firefox ESR 45.6 and Firefox...

Memory corruption

Memory safety bugs were reported in Firefox ESR 52.6. 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. This vulnerability affects Firefox ESR 52.7 and Thunderbird 52.7...

Code injection

The Mozilla Maintenance Service can be invoked by an unprivileged user to read 32 bytes of any arbitrary file on the local system by convincing the service that it is reading a status file provided by the Mozilla Windows Updater. The Mozilla Maintenance Service executes with privileged access,...

Design/Logic Flaw

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. This vulnerability affects Thunderbird 52.1, Firefox ESR 45.9, Firefox ESR 52.1, and Firefox 53...

Design/Logic Flaw

An existing mitigation of timing side-channel attacks is insufficient in some circumstances. This issue is addressed in Network Security Services NSS 3.26.1. This vulnerability affects Thunderbird 45.5, Firefox ESR 45.5, and Firefox 50...