by Kastro
Paper/Archive/CVE-2021-27431

CVE-2021-27431

ARM CMSIS RTOS2 — ARM CMSIS RTOS2 Integer Overflow or Wraparound

EPSS 1%CVSS 9.8
critical.is priorityof 100
43
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 66.8.668 × 2013.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

ARM CMSIS RTOS2 versions prior to 2.1.3 are vulnerable to integer wrap-around inosRtxMemoryAlloc (local malloc equivalent) function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or injected code execution.

Affected

ProductAffectedFixed inSource
CMSIS RTOS2unspecified – < 2.1.32.1.3CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
icscert (CNA)7.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refcisa.gov/uscert/ics/advisories/icsa-21-119-04