RHSA-2018:2251

Memory safety bugs present in Firefox 60, Firefox ESR 60, and Firefox ESR 52.8.

A buffer overflow can occur when rendering canvas content while adjusting the height and width of the canvas element dynamically, causing data to be written outside of the currently computed boundaries.

An integer overflow can occur during graphics operations done by the Supplemental Streaming SIMD Extensions 3 (SSSE3) scaler, resulting in a potentially exploitable crash.

A use-after-free vulnerability can occur when script uses mutation events to move DOM nodes between documents, resulting in the old document that held the node being freed but the node still having a pointer referencing…

A use-after-free vulnerability can occur when deleting an input element during a mutation event handler triggered by focusing that element.

NPAPI plugins, such as Adobe Flash, can send non-simple cross-origin requests, bypassing CORS by making a same-origin POST that does a 307 redirect to the target site.

An invalid grid size during QCMS (color profile) transformations can result in the out-of-bounds read interpreted as a float value.

A compromised IPC child process can escape the content sandbox and list the names of arbitrary files on the file system without user consent or interaction.

Decrypted S/MIME parts, when included in HTML crafted for an attack, can leak plaintext when included in a a HTML reply/forward.

dDecrypted S/MIME parts hidden with CSS or the plaintext HTML tag can leak plaintext when included in a HTML reply/forward.

Plaintext of decrypted emails can leak through by user submitting an embedded form by pressing enter key within a text input field.