CVE-2024-52877: insydeh2o — Fix

Description

An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, callback function SmmCreateVariableLockList () calls CreateVariableLockListInSmm (). In CreateVariableLockListInSmm (), it uses StrSize () to get variable name size and it could lead to a buffer over-read.

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CVSS v3.1 Score

7.5

HIGH

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

Weakness Type (CWE)

CWE-126 CWE-126

Affected Products

Vendor	Product	Versions
insyde	insydeh2o	5.2 — 5.2.05.29.50
insyde	insydeh2o	5.3 — 5.3.05.38.50
insyde	insydeh2o	5.4 — 5.4.05.46.50
insyde	insydeh2o	5.5 — 5.5.05.54.50
insyde	insydeh2o	5.6 — 5.6.05.61.50
insyde	insydeh2o	5.7 — 5.7.05.70.50

References

Advisories & Patches

https://www.insyde.com/security-pledge https://www.insyde.com/security-pledge/sa-2024016/

Frequently Asked Questions

What is CVE-2024-52877? +

An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, callback function SmmCreateVariableLockList () calls CreateVariableLockListInSmm (). In CreateVariableLockListInSmm (), it uses StrSize () to get variable name size and it could lead to a buffer over-read. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-52877? +

CVE-2024-52877 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-52877? +

CVE-2024-52877 affects products from insyde, specifically: insydeh2o. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-52877? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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