Insyde InsydeH2O privilege escalation | US-CERT VU#796611
NAME
Insyde InsydeH2O privilege escalation
- Platforms Affected:
Insyde InsydeH2O 5.1
Insyde InsydeH2O 5.2
Insyde InsydeH2O 5.3
Insyde InsydeH2O 5.4
Insyde InsydeH2O 5.5 - Risk Level:
8.2 - Exploitability:
Unproven - Consequences:
Gain Privileges
DESCRIPTION
Insyde InsydeH2O could allow a local authenticated attacker to gain elevated privileges on the system, caused by an unsafe pointer flaw in the SMM (System Management Mode) branch when registering a SWSMI handler. By sending a specially-crafted request, an authenticated attacker could exploit this vulnerability to gain elevated privileges in SMM.
CVSS 3.0 Information
- Privileges Required: High
- User Interaction: None
- Scope: Changed
- Access Vector: Local
- Access Complexity: Low
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Remediation Level: Official Fix
MITIGATION
Refer to Insyde Web site for patch, upgrade or suggested workaround information. See References.
- Reference Link:
https://www.insyde.com/security-pledge - Reference Link:
https://support.lenovo.com/us/en/product_security/LEN-73436
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