Vulnerability · Published Sep 20, 2022 · Assigned by certcc
CVE-2022-40262The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase.
High 8.2
In plain English
A high-severity security flaw in Aptio from AMI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Official description
A potential attacker can execute an arbitrary code at the time of the PEI phase and influence the subsequent boot stages. This can lead to the mitigations bypassing, physical memory contents disclosure, discovery of any secrets from any Virtual Machines (VMs) and bypassing memory isolation and confidential computing boundaries. Additionally, an attacker can build a payload which can be injected into the SMRAM memory. This issue affects: Module name: S3Resume2Pei SHA256: 7bb29f05534a8a1e010443213451425098faebd45948a4642db969b19d0253fc Module GUID: 89E549B0-7CFE-449D-9BA3-10D8B2312D71
Affected products (as reported)
Weakness: CWE-123 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
References
- https://www.ami.com/security-center/ x_refsource_MISC
- https://www.binarly.io/advisories/BRLY-2022-009 x_refsource_MISC