Medium severity · published Mar 16, 2023
CVE-2022-34421
Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability
6.7
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PP
PowerEdge Platform · Dell
14G,15G · source: vendor
CF
C4130 Firmware · Dell
before 2.16.0 · source: NVD
CF
C4140 Firmware · Dell
before 2.16.1 · source: NVD
CF
C6420 Firmware · Dell
before 2.16.1 · source: NVD
CF
C6520 Firmware · Dell
before 1.8.2 · source: NVD
CF
C6525 Firmware · Dell
All versions, or not specified · source: NVD
DF
Dss8440 Firmware · Dell
before 2.16.1 · source: NVD
FF
Fc630 Firmware · Dell
before 2.16.0 · source: NVD
FF
Fc640 Firmware · Dell
before 2.16.1 · source: NVD
MF
M630 Firmware · Dell
before 2.16.0 · source: NVD
MF
M630p Firmware · Dell
before 2.16.0 · source: NVD
MF
M640 Firmware · Dell
before 2.16.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-34421
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-34421
Patch
https://www.dell.com/support/kbdoc/en-us/000206296/dsa-2022-204-dell-poweredge-improper-smm-communication-buffer-verification-vulnerability
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