Wasmtime is a runtime for WebAssembly. Prior to 36.0.19, 48.0.7, and 49.0.4, the Cranelift compiler backend on aarch64 can compile a Wasm br_table instruction with more than approximately 256,000 targets so that it has an incorrect conditional branch target. The branch can then jump to arbitrary other code at a user-controlled offset, allowing a user-controlled Wasm module to escape the sandbox on aarch64 engines using the default Cranelift backend.
This issue is fixed in versions 36.0.19, 48.0.7, and 49.0.4.
Характеристики атаки
Способ атаки
По сети
Атака возможна удалённо
Сложность
Низкая
Легко эксплуатировать
Нужны права
Низкие
Нужны базовые права
Участие пользователя
Не требуется
Не нужно действие пользователя
Последствия
Конфиденциальность
Высокое
Полная утечка данных
Целостность
Высокое
Полная модификация данных
Доступность
Высокое
Полный отказ в обслуживании
Строка CVSS v3.1
Тип уязвимости (CWE)
Ссылки 12
https://github.com/bytecodealliance/wasmtime/commit/222ff3a65dab9aa7011f8c24693…
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/commit/994549891c8a706cb4f2809f9d1…
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/commit/e61df1b454be9313d61a5f8de07…
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/commit/f517bd6e890c7c1291ab9fe05d8…
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/pull/14818
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/pull/14819
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/pull/14820
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/pull/14826
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/releases/tag/v36.0.19
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/releases/tag/v48.0.7
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/releases/tag/v49.0.4
security-advisories@github.com
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-mghf-wjfp…
security-advisories@github.com