VDB-209477 · CVE-2022-35893 · BRLY-2022-026

InsydeH2O up to 5.5 FvbServicesRuntimeDxe Driver memory corruption

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.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in InsydeH2O up to 5.5. This issue affects some unknown processing of the component FvbServicesRuntimeDxe Driver. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2022-35893. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in InsydeH2O up to 5.5. This issue affects some unknown functionality of the component FvbServicesRuntimeDxe Driver. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM memory corruption vulnerability in the FvbServicesRuntimeDxe driver allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

The weakness was disclosed 09/24/2022 as BRLY-2022-026. The advisory is shared at binarly.io. The identification of this vulnerability is CVE-2022-35893 since 07/15/2022. Neither technical details nor an exploit are publicly available.

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

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Productinfo

Name

InsydeH2O

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.2
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/15/2022 🔍
09/24/2022 +71 days 🔍
09/24/2022 +0 days 🔍
10/23/2022 +29 days 🔍

Sourcesinfo

Advisory: BRLY-2022-026
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-35893 (🔍)
GCVE (CVE): GCVE-0-2022-35893
GCVE (VulDB): GCVE-100-209477

Entryinfo

Created: 09/24/2022 08:50
Updated: 10/23/2022 09:53
Changes: 09/24/2022 08:50 (39), 10/23/2022 09:53 (11)
Complete: 🔍
Cache ID: 216::103