CVE - CVE-2022-40250

CVE-ID
CVE-2022-40250	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
An attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute arbitrary code in System Management Mode - an environment more privileged than operating system (OS) and completely isolated from it. Running arbitrary code in SMM additionally bypasses SMM-based SPI flash protections against modifications, which can help an attacker to install a firmware backdoor/implant into BIOS. Such a malicious firmware code in BIOS could persist across operating system re-installs. Additionally, this vulnerability potentially could be used by malicious actors to bypass security mechanisms provided by UEFI firmware (for example, Secure Boot and some types of memory isolation for hypervisors). This issue affects: Module name: SmmSmbiosElog SHA256: 3a8acb4f9bddccb19ec3b22b22ad97963711550f76b27b606461cd5073a93b59 Module GUID: 8e61fd6b-7a8b-404f-b83f-aa90a47cabdf This issue affects: AMI Aptio 5.x. This issue affects: AMI Aptio 5.x.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://www.ami.com/security-center/ URL:https://www.ami.com/security-center/ MISC:https://www.binarly.io/advisories/BRLY-2022-016 URL:https://www.binarly.io/advisories/BRLY-2022-016 MISC:https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.html URL:https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00712.html
Assigning CNA
CERT/CC
Date Record Created
20220908	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20220908)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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