Vulnerability identifier: #VU51687
Vulnerability risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
macOS
Operating systems & Components /
Operating system
Vendor: Apple Inc.
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in process_token_AVCDecode within Graphics drivers. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code on the target system with kernel privileges.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
macOS: 11.0 20A2411, 10.15 19A583 - 10.15.7 19H15, 10.14.3 18D43 - 10.14.6 18G6042
External links
http://support.apple.com/en-us/HT212011
http://support.apple.com/en-us/HT211931
http://www.zerodayinitiative.com/advisories/ZDI-21-377/
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.