CVE-2018-18068

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.92% Top 20%
Third-Party Advisory wayne.edu Third-Party Advisory computer.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.computer.org/csdl/proceedings-article/sp/2019/666000b157/17D45WHONhv third party advisory
http://www.cs.wayne.edu/fengwei/paper/nailgun-sp19.pdf third party advisory exploit technical description

Frequently Asked Questions

What is the severity of CVE-2018-18068?
CVE-2018-18068 has been scored as a critical severity vulnerability.
How to fix CVE-2018-18068?
To fix CVE-2018-18068, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-18068 being actively exploited in the wild?
It is possible that CVE-2018-18068 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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