VDB-221252 · CVE-2022-21163 · intel-sa-00746

Intel SGX up to 1.x Crypto API Toolkit access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.1	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in Intel SGX up to 1.x. This impacts an unknown function of the component Crypto API Toolkit. Such manipulation leads to access control. This vulnerability is uniquely identified as CVE-2022-21163. Local access is required to approach this attack. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Intel SGX up to 1.x (Chip Software) and classified as critical. Affected by this issue is an unknown part of the component Crypto API Toolkit. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Improper access control in the Crypto API Toolkit for Intel(R) SGX before version 2.0 commit ID 91ee496 may allow an authenticated user to potentially enable escalation of privilege via local access.

The weakness was disclosed 02/17/2023 as intel-sa-00746. The advisory is shared for download at intel.com. This vulnerability is handled as CVE-2022-21163 since 12/09/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 2.0 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Chip Software

Vendor

Intel

Name

Version

License

commercial

Website

Vendor: https://www.intel.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 8.4
CNA Vector (Intel Corporation): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: SGX 2.0

Timelineinfo

12/09/2021 🔍
02/17/2023 +435 days 🔍
02/17/2023 +0 days 🔍
03/16/2023 +27 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: intel-sa-00746
Status: Confirmed

CVE: CVE-2022-21163 (🔍)
GCVE (CVE): GCVE-0-2022-21163
GCVE (VulDB): GCVE-100-221252

Entryinfo

Created: 02/17/2023 07:54
Updated: 03/16/2023 18:30
Changes: 02/17/2023 07:54 (52), 03/16/2023 18:30 (11)
Complete: 🔍
Cache ID: 216::103