{"id":86489,"date":"2026-02-17T18:13:43","date_gmt":"2026-02-17T18:13:43","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2024-55567-improper-input-validation-in-insyde-insydeh2o-kernel-leads-to-arbitrary-code-execution","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2024-55567-improper-input-validation-in-insyde-insydeh2o-kernel-leads-to-arbitrary-code-execution\/","title":{"rendered":"CVE-2024-55567: Improper Input Validation in Insyde InsydeH2O Kernel Leads to Arbitrary Code Execution<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This report examines the details of CVE-2024-55567, a serious vulnerability found in the Insyde InsydeH2O kernel. This vulnerability affects several versions of the kernel and poses a significant risk due to the potential for system compromise or data leakage. It is of particular concern to organizations using affected versions of the kernel, as exploitation could lead to unauthorized access and control of system resources.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2024-55567
\nSeverity: High (CVSS: 7.5)
\nAttack Vector: Local
\nPrivileges Required: Low
\nUser Interaction: None
\nImpact: System compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Insyde InsydeH2O Kernel | 5.4 before 05.47.01
\nInsyde InsydeH2O Kernel | 5.5 before 05.55.01
\nInsyde InsydeH2O Kernel | 5.6 before 05.62.01
\nInsyde InsydeH2O Kernel | 5.7 before 05.71.01<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability lies in the improper input validation in UsbCoreDxe in the InsydeH2O kernel. An attacker could exploit this vulnerability by triggering a specific SMM (System Management Mode) call out. This could allow the attacker to write arbitrary memory inside SMRAM (System Management RAM) and execute arbitrary code at the SMM level, leading to potential system compromise or data leakage.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

While the specific exploitation code will depend on the attacker’s objectives and the system’s configuration, a conceptual example might look like this:<\/p>\n

# Conceptual Python code showing how to exploit the vulnerability\nimport smm\ndef exploit(target_smm):\n# Create arbitrary memory and code\narbitrary_memory = smm.Memory(\"...\")\narbitrary_code = smm.Code(\"...\")\n# Write arbitrary memory inside SMRAM\ntarget_smm.write_memory(arbitrary_memory)\n# Execute arbitrary code at SMM level\ntarget_smm.execute_code(arbitrary_code)\n# Target the vulnerable SMM\ntarget_smm = smm.get_smm(\"target\")\nexploit(target_smm)<\/code><\/pre>\n
Note: This is a conceptual example and may not reflect the exact methods used in a real-world exploit of this vulnerability. It is meant to illustrate the potential method of exploitation rather than provide a specific exploit script.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This report examines the details of CVE-2024-55567, a serious vulnerability found in the Insyde InsydeH2O kernel. This vulnerability affects several versions of the kernel and poses a significant risk due to the potential for system compromise or data leakage. It is of particular concern to organizations using affected versions of the kernel, as exploitation […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86489","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t