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2019-04-26
The type inference system allows the compilation of functions that can cause type confusions between arbitrary objects when compiled through the IonMonkey just-in-time (JIT) compiler and when the constructor function is entered through on-stack replacement (OSR). This allows for possible arbitrary reading and writing of objects during an exploitable crash. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.
Products | Firefox, Firefox_esr, Thunderbird, Enterprise_linux, Enterprise_linux_eus, Enterprise_linux_server_aus, Enterprise_linux_server_tus |
Type | Access of Resource Using Incompatible Type ('Type Confusion') (CWE-843) |
First patch | - None (likely due to unavailable code) |
Links |
• https://access.redhat.com/errata/RHSA-2019:0966
• https://bugzilla.mozilla.org/show_bug.cgi?id=1530958 • https://www.mozilla.org/security/advisories/mfsa2019-11/ • https://access.redhat.com/errata/RHSA-2019:1144 • https://www.mozilla.org/security/advisories/mfsa2019-07/ |