Security Vulnerabilities fixed in Firefox 105 — Mozilla

An out-of-bounds read can occur when decoding H264 video. This results in a potentially exploitable crash.
During iframe navigation, certain pages did not have their FeaturePolicy fully initialized leading to a bypass that leaked device permissions into untrusted subdocuments.
Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash.
A missing check related to tex units could have led to a use-after-free and potentially exploitable crash.Note: This advisory was added on December 13th, 2022 after we better understood the impact of the issue. The fix was included in the original release of Firefox 105.
By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks.
During startup, a graphics driver with an unexpected name could lead to a stack-buffer overflow causing a potentially exploitable crash.This issue only affects Firefox for Android. Other operating systems are not affected.
When injecting an HTML base element, some requests would ignore the CSP’s base-uri settings and accept the injected element’s base instead.
Inconsistent data in instruction and data cache when creating wasm code could lead to a potentially exploitable crash.This bug only affects Firefox on ARM64 platforms.
Mozilla developers Nika Layzell, Timothy Nikkel, Sebastian Hengst, Andreas Pehrson, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 104 and Firefox ESR 102.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.