VDB-114935 · CVE-2018-8932 · Qualys 370876

AMD Ryzen/Ryzen Pro Secure Processor RYZENFALL 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.
7.7	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in AMD Ryzen and Ryzen Pro. The impacted element is an unknown function of the component Secure Processor. The manipulation leads to access control (RYZENFALL). This vulnerability is referenced as CVE-2018-8932. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in AMD Ryzen and Ryzen Pro (affected version not known) and classified as critical. This issue affects some unknown functionality of the component Secure Processor. The manipulation with an unknown input leads to a access control vulnerability (RYZENFALL). 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. The summary by CVE is:

The AMD Ryzen and Ryzen Pro processor chips have insufficient access control for the Secure Processor, aka RYZENFALL-2, RYZENFALL-3, and RYZENFALL-4.

The bug was discovered 03/13/2018. The weakness was published 03/22/2018 (Website). It is possible to read the advisory at amdflaws.com. The identification of this vulnerability is CVE-2018-8932 since 03/22/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370876 (AMD Processors Multiple Security Vulnerabilities (RYZENFALL/MASTERKEY/CHIMERA-FW/FALLOUT)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-114933, VDB-114934, VDB-114936 and VDB-114937. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.7

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.0
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/13/2018 🔍
03/22/2018 +9 days 🔍
03/22/2018 +0 days 🔍
03/22/2018 +0 days 🔍
03/23/2018 +1 days 🔍
01/16/2020 +664 days 🔍

Sourcesinfo

Advisory: amdflaws.com
Status: Not defined

CVE: CVE-2018-8932 (🔍)
GCVE (CVE): GCVE-0-2018-8932
GCVE (VulDB): GCVE-100-114935
See also: 🔍

Entryinfo

Created: 03/23/2018 10:09
Updated: 01/16/2020 08:09
Changes: 03/23/2018 10:09 (60), 01/16/2020 08:09 (1)
Complete: 🔍
Cache ID: 216::103