insyde Kernel UsbCoreDxe buffer overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in insyde Kernel. This issue affects some unknown processing of the component UsbCoreDxe. The manipulation leads to buffer overflow. This vulnerability is uniquely identified as CVE-2022-30283. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in insyde Kernel (affected version unknown). It has been rated as critical. This issue affects an unknown functionality of the component UsbCoreDxe. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In UsbCoreDxe, tampering with the contents of the USB working buffer using DMA while certain USB transactions are in process leads to a TOCTOU problem that could be used by an attacker to cause SMRAM corruption and escalation of privileges The UsbCoreDxe module creates a working buffer for USB transactions outside of SMRAM. The code which uses can be inside of SMM, making the working buffer untrusted input. The buffer can be corrupted by DMA transfers. The SMM code code attempts to sanitize pointers to ensure all pointers refer to the working buffer, but when a pointer is not found in the list of pointers to sanitize, the current action is not aborted, leading to undefined behavior. This issue was discovered by Insyde engineering based on the general description provided by Intel's iSTARE group. Fixed in: Kernel 5.0: Version 05.09. 21 Kernel 5.1: Version 05.17.21 Kernel 5.2: Version 05.27.21 Kernel 5.3: Version 05.36.21 Kernel 5.4: Version 05.44.21 Kernel 5.5: Version 05.52.21 https://www.insyde.com/security-pledge/SA-2022063

The weakness was disclosed 11/16/2022. It is possible to read the advisory at insyde.com. The identification of this vulnerability is CVE-2022-30283 since 05/04/2022. The technical details are unknown and an exploit is not publicly available.

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Productinfo

Vendor

• insyde

Name

• Kernel

License

• commercial

CPE 2.3info

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CPE 2.2info

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