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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)

CVE-2022-35408 is a high-severity vulnerability affecting InsydeH2O firmware versions with kernel 5.0 through 5.5. The flaw exists in the System Management Mode (SMM) driver component UsbLegacyControlSmm, which handles USB-related System Management Interrupts (SMIs). Specifically, the vulnerability allows an attacker to overwrite function pointers in the EFI_BOOT_SERVICES table prior to the USB SMI handler execution. This manipulation can lead to arbitrary code execution within SMM, a highly privileged execution environment isolated from the operating system. Exploiting this vulnerability enables escalation of privileges at the firmware level, potentially compromising the confidentiality, integrity, and availability of the system. Notably, exploitation is not possible from code running in the operating system, indicating that the attacker requires a lower-level access vector, such as physical access or a compromised pre-boot environment. The vulnerability is classified under CWE-123 (Write-what-where condition), indicating that improper handling of memory pointers allows overwriting critical function pointers. The CVSS v3.1 base score is 8.2, reflecting high impact on confidentiality, integrity, and availability, with attack vector local, low attack complexity, high privileges required, no user interaction, and scope changed due to impact beyond the vulnerable component. No known exploits are currently reported in the wild, and no patches are linked in the provided data, suggesting that mitigation may require firmware updates from device manufacturers or vendors. Given the involvement of InsydeH2O firmware, which is widely used in laptops and embedded devices, this vulnerability poses a significant risk to endpoint security, especially in environments where firmware integrity is critical.

Detailed information about CVE-2022-35408: n/a in n/a affecting n/a n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2022-35408: n/a in n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2022-35408: n/a in n/a

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