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Privileges Required
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0

CVE-2018-18068

Disclosure Date: April 04, 2019
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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.

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CVSS V3 Severity and Metrics
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Attack Vector (AV):
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Privileges Required (PR):
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Scope (S):
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Integrity (I):
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Availability (A):
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Technical Analysis