Stale Value Exploitation in WASM JIT Analysis: Potential Crash and Code Execution in Firefox

Stale Value Exploitation in WASM JIT Analysis: Potential Crash and Code Execution in Firefox

CVE-2023-4046 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

In some circumstances, a stale value could have been used for a global variable in WASM JIT analysis. This resulted in incorrect compilation and a potentially exploitable crash in the content process. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

Learn more about our Web Application Penetration Testing UK.