Vulnerability · Published May 3, 2022 · Assigned by icscert
CVE-2021-27431ARM CMSIS RTOS2 Integer Overflow or Wraparound
High 7.3
In plain English
A high-severity integer overflow in CMSIS RTOS2 from ARM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 67% of all known vulnerabilities).
Severity (CVSS 3.1)7.3High
Exploit odds (30 days)1.1%top 33.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ARM | CMSIS RTOS2 | unspecified – before 2.1.3 |
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 x_refsource_CONFIRM