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CVE-2022-28806

7.8 · HIGH

An issue was discovered on certain Fujitsu LIEFBOOK devices (A3510, U9310, U7511/U7411/U7311, U9311, E5510/E5410, U7510/U7410/U7310, E459/E449) with BIOS versions before v1.09 (A3510), v2.17 (U9310…

Published May 4, 2022CWE-787EPSS 0.48%

Overview

CVE-2022-28806 is a high-severity vulnerability. It was published on May 4, 2022 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

An issue was discovered on certain Fujitsu LIEFBOOK devices (A3510, U9310, U7511/U7411/U7311, U9311, E5510/E5410, U7510/U7410/U7310, E459/E449) with BIOS versions before v1.09 (A3510), v2.17 (U9310), v2.30 (U7511/U7411/U7311), v2.33 (U9311), v2.23 (E5510), v2.19 (U7510/U7410), v2.13 (U7310), and v1.09 (E459/E449). The FjGabiFlashCoreAbstractionSmm driver registers a Software System Management Interrupt (SWSMI) handler that is not sufficiently validated to ensure that the CommBuffer (or any other communication buffer's nested contents) are not pointing to SMRAM contents. A potential attacker can therefore write fixed data to SMRAM, which could lead to data corruption inside this memory (e.g., change the SMI handler's code or modify SMRAM map structures to break input pointer validation for other SMI handlers). Thus, the attacker could elevate privileges from ring 0 to ring -2 and execute arbitrary code in SMM.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.fmworld.net/biz/common/insyde/20220210/Refkb.cert.org/vuls/id/796611Refsupport.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.aspRefwww.binarly.io/advisoriesRefwww.fmworld.net/biz/common/insyde/20220210/Refkb.cert.org/vuls/id/796611Refsupport.ts.fujitsu.com/ProductSecurity/content/Fujitsu-PSIRT-FCCL-IS-2021-090903-Security-Advisory.aspRefwww.binarly.io/advisoriesRefwww.kb.cert.org/vuls/id/796611

How CyberStrike helps

Frequently asked questions

What is CVE-2022-28806?

CVE-2022-28806 is a high-severity vulnerability. It was published on May 4, 2022 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-28806?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-28806?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-28806?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-28806 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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