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CRITICAL

CVE-2018-18068

CVSS v3

9.8

CRITICAL

Score EPSS

1.9 %

probabilité d’exploitation

CISA KEV

Non

exploitation connue

Exploitation

statut SSVC

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.

Détails techniques

Publiée le
2019-04-04

Questions fréquentes

Qu’est-ce que CVE-2018-18068 ?

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.

CVE-2018-18068 est-elle activement exploitée ?

Aucune exploitation active de CVE-2018-18068 n’est confirmée. Le score EPSS est de 1.9 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.

Quel est le score CVSS de CVE-2018-18068 ?

CVE-2018-18068 a un score de base CVSS v3 de 9.8 (gravité CRITICAL).

CVE-2018-18068 touche-t-elle votre environnement ?

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