Vulnerabilities > Mozilla > Firefox ESR > 91.1
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2021-12-08 | CVE-2021-38507 | Origin Validation Error vulnerability in multiple products The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. | 6.5 |
| 2021-12-08 | CVE-2021-38508 | Improper Restriction of Rendered UI Layers or Frames vulnerability in multiple products By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permission. | 4.3 |
| 2021-12-08 | CVE-2021-38509 | Improper Restriction of Rendered UI Layers or Frames vulnerability in multiple products Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. | 4.3 |
| 2021-12-08 | CVE-2021-38510 | Unspecified vulnerability in Mozilla Firefox ESR The executable file warning was not presented when downloading .inetloc files, which, due to a flaw in Mac OS, can run commands on a user's computer.*Note: This issue only affected Mac OS operating systems. network mozilla | 6.8 |
| 2021-12-08 | CVE-2021-43534 | Out-of-bounds Write vulnerability in multiple products Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. | 6.8 |
| 2021-12-08 | CVE-2021-43535 | Use After Free vulnerability in multiple products A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. | 6.8 |
| 2021-12-08 | CVE-2021-43536 | Information Exposure vulnerability in multiple products Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. | 6.5 |
| 2021-12-08 | CVE-2021-43537 | Incorrect Type Conversion or Cast vulnerability in multiple products An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. | 8.8 |
| 2021-12-08 | CVE-2021-43538 | Race Condition vulnerability in multiple products By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. | 4.3 |
| 2021-12-08 | CVE-2021-43539 | Use After Free vulnerability in multiple products Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. | 8.8 |