Intel processors Post-barrier RSB predictions vulnerability

1) Security restrictions bypass

EUVDB-ID: #VU66549

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-26373

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

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to non-transparent sharing of return predictor targets between contexts in Intel CPU processors. A local user can bypass the expected architecture isolation between contexts and gain access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Intel Xeon E Processors: All versions

Intel Xeon D Processors: All versions

Intel Xeon W Processors: All versions

Intel Core X-series Processors: All versions

2nd Generation Intel Xeon Scalable Processors: All versions

3rd Generation Intel Xeon Scalable Processors: All versions

10th Generation Intel Core Processors: All versions

Intel Core Processors with Intel Hybrid Technology: All versions

11th Generation Intel Core Processors: All versions

Intel Xeon Processors: All versions

8th Generation Intel Core Processors: All versions

Intel Pentium Gold Processor Series: All versions

Intel Celeron Processor 5000 Series: All versions

12th Generation Intel Core Processors: All versions

Intel Celeron Processors: All versions

9th Generation Intel Core Processors: All versions

CPE2.3

• cpe:2.3:h:intel:intel_xeon_e_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_xeon_d_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_xeon_w_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_core_x-series_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:2nd_generation_intel_xeon_scalable_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:3rd_generation_intel_xeon_scalable_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:10th_generation_intel_core_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_core_processors_with_intel_hybrid_technology:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:11th_generation_intel_core_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_xeon_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:8th_generation_intel_core_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_pentium_gold_processor_series:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_celeron_processor_5000_series:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:12th_generation_intel_core_processors:*:*:*:*:*:*:*:*
• cpe:2.3:h:intel:intel_celeron_processors:*:*:*:*:*:*:*:*
• cpe:2.3:a:intel:9th_generation_intel_core_processors:*:*:*:*:*:*:*:*

External links

http://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00706.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.