Attacker Value
Unknown
0
CVE-2021-41838
0
CVE ID
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CVE-2021-41838
(Last updated October 07, 2023) ▾
MITRE ATT&CK
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Collection
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Command and Control
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Credential Access
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Defense Evasion
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Discovery
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Execution
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Exfiltration
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Impact
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Initial Access
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Lateral Movement
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Persistence
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Privilege Escalation
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Description
An issue was discovered in SdHostDriver in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of a Numeric Range Comparison Without a Minimum Check.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
8.2 High
Impact Score:
6
Exploitability Score:
1.5
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
High
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
General Information
Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown
Products
- insydeh2o,
- simatic field pg m5 firmware,
- simatic field pg m6 firmware,
- simatic ipc127e firmware,
- simatic ipc227g firmware,
- simatic ipc277g firmware,
- simatic ipc327g firmware,
- simatic ipc377g firmware,
- simatic ipc427e firmware,
- simatic ipc477e firmware,
- simatic ipc627e firmware,
- simatic ipc647e firmware,
- simatic ipc677e firmware,
- simatic ipc847e firmware,
- simatic itp1000 firmware
References
Additional Info
Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Rapid7
Technical Analysis
Report as Emergent Threat Response
Report as Zero-day Exploit
Report as Exploited in the Wild
CVE ID
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