vulnwire
8.1high

CVE-2017-7563

In ARM Trusted Firmware 1.3, RO memory is always executable at AArch64 Secure EL1, allowing attackers to bypass the MT_EXECUTE_NEVER protec…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
8.1
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
0.9%
percentile 59%
Public exploits
0
none known

In ARM Trusted Firmware 1.3, RO memory is always executable at AArch64 Secure EL1, allowing attackers to bypass the MT_EXECUTE_NEVER protection mechanism. This issue occurs because of inconsistency in the number of execute-never bits (one bit versus two bits).

Exploit prediction (EPSS)

0.88% probability of exploitation in the next 30 days, higher than 59% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.18.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.06.8AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource

References

  • github.com /ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Security-Advisory-TFV-3 · x_refsource_CONFIRM, x_transferred

Sources

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