CVE-2018-18068

Name: CVE-2018-18068
Creator: NVD / NIST
Published: 2019-04-04T20:29:00.22+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.33%

Last modified Jun 17, 2026

CVE-2018-18068 is a vulnerability of currently unknown severity. 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. EPSS estimates a 3.33% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

3.33%

87.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-668

Affected Software

Vendor	Product	Versions
Raspberrypi	Raspberry Pi 3 Model B\+ Firmware	All versions

References

http://www.cs.wayne.edu/fengwei/paper/nailgun-sp19.pdfExploit, Technical Description, Third Party Advisory
https://www.computer.org/csdl/proceedings-article/sp/2019/666000b157/17D45WHONhvThird Party Advisory
http://www.cs.wayne.edu/fengwei/paper/nailgun-sp19.pdfExploit, Technical Description, Third Party Advisory
https://www.computer.org/csdl/proceedings-article/sp/2019/666000b157/17D45WHONhvThird Party Advisory

Timeline

Published: Apr 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-18068?

How severe is CVE-2018-18068?

Severity scoring for CVE-2018-18068 is pending analysis. The EPSS model estimates a 3.33% probability of exploitation in the next 30 days.

How do I fix CVE-2018-18068?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-18068?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST