Headline
Widevine Trustlet 5.x drm_verify_keys Buffer Overflow
Widevine Trustlet versions 5.x suffer from a buffer overflow vulnerability in drm_verify_keys at 0x7370.
1. INFORMATION--------------[+] CVE : CVE-2022-48334[+] Title : Buffer Overflow in Widevine Trustlet (drm_verify_keys @ 0x7370)[+] Vendor : Google[+] Device : Nexus 6[+] Affected component : Widevine[+] Publication date : March 2023[+] Credits : CyberIntel Team2. AFFECTED VERSIONS--------------------5.0.0 (LRX21O), 5.0.1 (LRX22C), 5.1.0 (LMY47D), 5.1.0 (LMY47E), 5.1.0 (LMY47I), 5.1.0 (LMY47M), 5.1.1 (LMY47Z), 5.1.1 (LMY48I), 5.1.1 (LMY48M), 5.1.1 (LMY48T), 5.1.1 (LMY48W), 5.1.1 (LMY48X), 5.1.1 (LMY48Y), 5.1.1 (LVY48C), 5.1.1 (LVY48E), 5.1.1 (LVY48F), 5.1.1 (LVY48H), 5.1.1 (LVY48I), 5.1.1 (LYZ28E), 5.1.1 (LYZ28J), 5.1.1 (LYZ28K), 5.1.1 (LYZ28M), 5.1.1 (LYZ28N)3. DETAILS----------Qualcomm Secure Execution Environment is one of the most widespread commercial TEE solutions in the smartphone space, used by many different devices such as Xiaomi, Motorola and several devices of the Google Nexus and Pixel series. Widevine is a Digital Rights Management (DRM) technology developed by Google to protect copyrighted content and to enable secure distribution and consumption of video and audio content. The technology involves encryption, licensing, and key management to ensure that content can only be decrypted and played back on authorized devices. An attacker with high privileges in Normal World can exploit the vulnerability to compromise the Trusted Application running in the Secure World, eventually executing arbitrary code and reading and/or modifying information of critical files, compromising the confidentiality and integrity of the system. On the other hand, the attacker is able to crash the Trusted Application, potentially resulting in a denial of service.The bug is present in Widevine’s drm_verify_keys() command. This command closely resembles drm_save_keys(), which has been featured in other blog entries (refer to CVE-2022-48331 and CVE-2022-48332).For more details and full proof of concept visit https://cyberintel.es/cve/CVE-2022-48334_Buffer_Overflow_in_Widevine_drm_verify_keys_0x7370/--Cyber Intel Team.Zero Lab - https://cyberintel.es/Related news
Widevine Trusted Application (TA) 5.0.0 through 5.1.1 has a drm_verify_keys total_len+file_name_len integer overflow and resultant buffer overflow.
Widevine Trusted Application (TA) 5.0.0 through 5.1.1 has a drm_verify_keys prefix_len+feature_name_len integer overflow and resultant buffer overflow.
Widevine Trusted Application (TA) 5.0.0 through 5.1.1 has a drm_save_keys file_name_len integer overflow and resultant buffer overflow.
Widevine Trusted Application (TA) 5.0.0 through 7.1.1 has a PRDiagParseAndStoreData integer overflow and resultant buffer overflow.
Widevine Trusted Application (TA) 5.0.0 through 7.1.1 has a PRDiagVerifyProvisioning integer overflow and resultant buffer overflow.
Widevine Trusted Application (TA) 5.0.0 through 5.1.1 has a drm_save_keys integer overflow and resultant buffer overflow.
Widevine Trustlet versions 5.x suffer from a buffer overflow vulnerability in drm_verify_keys at 0x730c.
Widevine Trustlet versions 5.x suffer from a buffer overflow vulnerability in drm_save_keys at 0x6a18.
Widevine Trustlet versions 5.x suffer from a drm_save_keys related buffer overflow.