CVSS: 8.2EPSS: 0%CPEs: 3EXPL: 1CVE-2022-40262 – The arbitrary write vulnerability in S3Resume2Pei leads to arbitrary code execution during PEI phase.
https://notcve.org/view.php?id=CVE-2022-40262
20 Sep 2022 — 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: 7bb29f05534a8a1e010443213451425098fae... • https://www.ami.com/security-center • CWE-123: Write-what-where Condition CWE-787: Out-of-bounds Write •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 1CVE-2022-40261 – SMM memory corruption vulnerability in OverClockSmiHandler SMM driver
https://notcve.org/view.php?id=CVE-2022-40261
20 Sep 2022 — 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. Additio... • https://www.ami.com/security-center • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 8.8EPSS: 0%CPEs: 5EXPL: 1CVE-2022-40250 – Stack overflow vulnerability in SMI handler on SmmSmbiosElog.
https://notcve.org/view.php?id=CVE-2022-40250
20 Sep 2022 — 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. Additio... • https://www.ami.com/security-center • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 1CVE-2022-26873 – The stack buffer overflow vulnerability in PlatformInitAdvancedPreMem leads to arbitrary code execution during PEI phase.
https://notcve.org/view.php?id=CVE-2022-26873
20 Sep 2022 — 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: PlatformInitAdvancedPreMem SHA256: 644044fdb8daea30a7820e0... • https://www.ami.com/security-center • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •