A difference in the handling of StructFields and ArrayTypes in WASM could be used to trigger an exploitable type confusion vulnerability. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Thunderbird < 128.2.
The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
Link | Tags |
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https://bugzilla.mozilla.org/show_bug.cgi?id=1911909 | issue tracking permissions required |
https://www.mozilla.org/security/advisories/mfsa2024-39/ | vendor advisory |
https://www.mozilla.org/security/advisories/mfsa2024-40/ | vendor advisory |
https://www.mozilla.org/security/advisories/mfsa2024-43/ |