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7.2 High

CVE-2022-40246 A potential attacker can write one byte by arbitrary address at the time of the PEI phase (only during S3 resume boot…

Description

A potential attacker can write one byte by arbitrary address at the time of the PEI phase (only during S3 resume boot mode) 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: SbPei SHA256: d827182e5f9b7a9ff0b9d3e232f7cfac43b5237e2681e11f005be627a49283a9 Module GUID: c1fbd624-27ea-40d1-aa48-94c3dc5c7e0d

Affected products and versions

Product Affected versions Fixed in
Aptio 5.x No fix stated

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Aptio

The 5 CVEs of Aptio →
CVE-2022-40262 A potential attacker can execute an arbitrary code at the time of the PEI phase and influence the subsequent boot stages 8.2 High CVE-2022-40261 An attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute arbitrary code in… 8.2 High CVE-2022-40250 An attacker can exploit this vulnerability to elevate privileges from ring 0 to ring -2, execute arbitrary code in… 8.8 High CVE-2022-26873 A potential attacker can execute an arbitrary code at the time of the PEI phase and influence the subsequent boot stages 8.2 High
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