Описание
A security bypass flaw was found in Google Chrome. A local low-privileged attacker can hijack the COM class identifier registration used by Chrome's elevation service and point it to a non-existent or malicious binary. When this hijack occurs, Chrome silently falls back to the legacy cookie encryption mechanism, thereby enabling cookie decryption by any user-context malware without SYSTEM-level access.
Отчет
This CVE has been marked as Rejected by the assigning CNA.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Дополнительная информация
Связанные уязвимости
Rejected reason: Neither filed by Chrome nor a valid security vulnerability.
A security bypass vulnerability exists in Google Chrome AppBound cookie encryption mechanism due to insufficient validation of COM server paths during inter-process communication. A local low-privileged attacker can hijack the COM class identifier (CLSID) registration used by Chrome's elevation service and point it to a non-existent or malicious binary. When this hijack occurs, Chrome silently falls back to the legacy cookie encryption mechanism (protected only by user-DPAPI), thereby enabling cookie decryption by any user-context malware without SYSTEM-level access. This flaw bypasses the protections intended by the AppBound encryption design and allows cookie theft from Chromium-based browsers. Confirmed in Google Chrome with AppBound Encryption enabled. Other Chromium-based browsers may be affected if they implement similar COM-based encryption mechanisms.
Уязвимость механизма обработки файлов cookie веб-браузера Google Chrome, связанная с ошибками использования стандартных разрешений, позволяющая нарушителю перехватить регистрацию идентификатора класса и похитить cookie-файлы