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CVE-2018-18068

9.8 · CRITICAL

The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/regist…

Published Apr 4, 2019CWE-668EPSS 3.33%

Overview

CVE-2018-18068 is a critical-severity vulnerability. It was published on April 4, 2019 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The ARM-based hardware debugging feature on Raspberry Pi 3 module B+ and possibly other devices allows non-secure EL1 code to read/write any EL3 (the highest privilege level in ARMv8) memory/register via inter-processor debugging. With a debug host processor A running in non-secure EL1 and a debug target processor B running in any privilege level, the debugging feature allows A to halt B and promote B to any privilege level. As a debug host, A has full control of B even if B owns a higher privilege level than A. Accordingly, A can read/write any EL3 memory/register via B. Also, with this memory access, A can execute arbitrary code in EL3.

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.cs.wayne.edu/fengwei/paper/nailgun-sp19.pdfRefwww.computer.org/csdl/proceedings-article/sp/2019/666000b157/17D45WHONhvRefwww.cs.wayne.edu/fengwei/paper/nailgun-sp19.pdfRefwww.computer.org/csdl/proceedings-article/sp/2019/666000b157/17D45WHONhv

How CyberStrike helps

Frequently asked questions

What is CVE-2018-18068?

CVE-2018-18068 is a critical-severity vulnerability. It was published on April 4, 2019 and has a CVSS 3.0 base score of 9.8 (CRITICAL).

How severe is CVE-2018-18068?

This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-18068?

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-2018-18068?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-18068 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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