VDB-223197 · CVE-2022-34407 · dsa-2022-204

Dell PowerEdge BIOS/Precision BIOS SMM Communication 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.
6.9	$5k-$25k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Dell PowerEdge BIOS and Precision BIOS. The impacted element is an unknown function of the component SMM Communication Handler. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2022-34407. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability was found in Dell PowerEdge BIOS and Precision BIOS (affected version not known). It has been classified as critical. This affects some unknown functionality of the component SMM Communication Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability. A local malicious user with high Privileges may potentially exploit this vulnerability to perform arbitrary code execution or cause denial of service.

The weakness was disclosed 03/16/2023 as dsa-2022-204. The advisory is shared at dell.com. This vulnerability is uniquely identified as CVE-2022-34407 since 06/23/2022. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/08/2023).

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

Vendor

Dell

Name

License

commercial

Website

Vendor: https://www.dell.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.4
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (Dell): 🔍

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: 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/23/2022 🔍
03/16/2023 +266 days 🔍
03/16/2023 +0 days 🔍
04/08/2023 +23 days 🔍

Sourcesinfo

Vendor: dell.com

Advisory: dsa-2022-204
Status: Confirmed

CVE: CVE-2022-34407 (🔍)
GCVE (CVE): GCVE-0-2022-34407
GCVE (VulDB): GCVE-100-223197

Entryinfo

Created: 03/16/2023 13:45
Updated: 04/08/2023 14:42
Changes: 03/16/2023 13:45 (48), 04/08/2023 14:42 (9)
Complete: 🔍
Cache ID: 216::103