CVE-2022-25334 : Exploit Details and Defense Strategies
Learn about CVE-2022-25334 affecting Texas Instruments OMAP L138, allowing attackers to execute arbitrary code in secure supervisor context. Find mitigation steps here.
A detailed analysis of the CVE-2022-25334 vulnerability affecting Texas Instruments OMAP L138.
Understanding CVE-2022-25334
This section provides insights into the impact, technical details, and mitigation strategies for CVE-2022-25334.
What is CVE-2022-25334?
The Texas Instruments OMAP L138 (secure variants) trusted execution environment (TEE) lacks a bounds check on the signature size field, leading to a stack overflow vulnerability. Attackers can exploit this to execute arbitrary code in a secure supervisor context.
The Impact of CVE-2022-25334
The vulnerability allows an attacker to achieve full compromise of the TEE security architecture by overwriting a SHA256 function pointer in the secure kernel data area.
Technical Details of CVE-2022-25334
Let's delve into the vulnerability description, affected systems, and the exploitation mechanism of CVE-2022-25334.
Vulnerability Description
The issue arises from a lack of bounds check on the signature size field in the SK_LOAD module loading routine, causing a stack overflow that affects secure kernel data pages.
Affected Systems and Versions
The vulnerability impacts Texas Instruments OMAP L138 devices with the specific affected version being L138.
Exploitation Mechanism
Attackers can leverage a forged, unsigned SK_LOAD module encrypted with the CEK to trigger a stack overflow, leading to arbitrary code execution in secure supervisor context.
Mitigation and Prevention
Discover the immediate steps and long-term security practices to mitigate the risk posed by CVE-2022-25334.
Immediate Steps to Take
Organizations should apply relevant security patches and updates provided by Texas Instruments to mitigate the vulnerability.
Long-Term Security Practices
Implement secure coding practices, conduct regular security assessments, and monitor for any suspicious activities to enhance overall system security.
Patching and Updates
Stay informed about security bulletins and advisories from Texas Instruments, ensuring timely application of patches to address known vulnerabilities.