CVE-2023-27373 — MEDIUM (5.5)

Vulnerability Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Insyde	Insydeh2O	5.0

Related Weaknesses (CWE)

CWE-20

References

https://www.insyde.com/security-pledge/SA-2023035Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023035Vendor Advisory

FAQ

What is CVE-2023-27373?

CVE-2023-27373 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR sett...

How severe is CVE-2023-27373?

CVE-2023-27373 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-27373?

Check the references section above for vendor advisories and patch information. Affected products include: Insyde Insydeh2O.