Privilege escalation in Intel SGX SDK

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU57596

Risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0186

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local administrator to escalate privileges on the system.

The vulnerability exists due to improper input validation in the Intel SGX SDK applications compiled for SGX2 enabled processors, which leads to security restrictions bypass and privilege escalation.

This vulnerability affects the following Intel Processors supporting SGX2:

• Ice Lake Xeon-SP (HCC, XCC) - 3rd Gen Intel® Xeon® Scalable processor famil

• Ice Lake - 10th Generation Intel® Core™ Processor Famil

• Gemini Lake - Intel® Pentium® Processor Silver Series, Intel® Celeron® Processor J Series, Intel® Celeron® Processor N Serie

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Intel SGX SDK for Windows: 2.12

Intel SGX SDK for Linux: 2.13

External links

http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00548.html

Q & A

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.