VDB-164816 · CVE-2020-12355 · intel-sa-00391

Intel TXE up to 4.0.29 RPMB Protocol Message Subsystem improper authentication

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Intel TXE. This vulnerability affects unknown code of the component RPMB Protocol Message Subsystem. Such manipulation leads to improper authentication. This vulnerability is documented as CVE-2020-12355. The attack can be executed directly on the physical device. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Intel TXE. It has been rated as problematic. Affected by this issue is an unknown functionality of the component RPMB Protocol Message Subsystem. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability.

The weakness was released 11/12/2020 as intel-sa-00391. The advisory is shared for download at intel.com. This vulnerability is handled as CVE-2020-12355. The exploitation is known to be difficult. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.0.30 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 3.9
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
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: TXE 4.0.30

Timelineinfo

04/28/2020 🔍
11/12/2020 +198 days 🔍
11/12/2020 +0 days 🔍
11/04/2025 +1818 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: intel-sa-00391
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-12355 (🔍)
GCVE (CVE): GCVE-0-2020-12355
GCVE (VulDB): GCVE-100-164816

Entryinfo

Created: 11/12/2020 21:19
Updated: 11/04/2025 21:30
Changes: 11/12/2020 21:19 (38), 12/06/2020 09:56 (3), 12/06/2020 10:02 (18), 11/04/2025 21:30 (17)
Complete: 🔍
Cache ID: 216::103