Insyde InsydeH2O up to 05.70.49 VariableRuntimeDxe Driver VariableServicesSetVariable buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Insyde InsydeH2O up to 05.70.49. This affects the function VariableServicesSetVariable of the component VariableRuntimeDxe Driver. This manipulation causes buffer overflow. This vulnerability is handled as CVE-2024-52878. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Insyde InsydeH2O up to 05.70.49 and classified as critical. Affected by this vulnerability is the function VariableServicesSetVariable of the component VariableRuntimeDxe Driver. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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, VariableServicesSetVariable () can be called by gRT_>SetVariable () or the SmmSetSensitiveVariable () or SmmInternalSetVariable () from SMM. In VariableServicesSetVariable (), it uses StrSize () to get variable name size, uses StrLen () to get variable name length and uses StrCmp () to compare strings. These actions may cause a buffer over-read.

It is possible to read the advisory at insyde.com. This vulnerability is known as CVE-2024-52878 since 11/17/2024. The exploitation appears to be easy. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 05.29.50, 05.38.50, 05.46.50, 05.54.50, 05.61.50 or 05.70.50 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: InsydeH2O 05.29.50/05.38.50/05.46.50/05.54.50/05.61.50/05.70.50

Timelineinfo

11/17/2024 🔍
05/15/2025 +178 days 🔍
05/15/2025 +0 days 🔍
08/15/2025 +92 days 🔍

Sourcesinfo

Advisory: insyde.com
Status: Confirmed

CVE: CVE-2024-52878 (🔍)
GCVE (CVE): GCVE-0-2024-52878
GCVE (VulDB): GCVE-100-309091

Entryinfo

Created: 05/15/2025 18:03
Updated: 08/15/2025 19:56
Changes: 05/15/2025 18:03 (56), 08/15/2025 19:56 (1)
Complete: 🔍
Cache ID: 216::103

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