High severity · published Nov 21, 2023
CVE-2021-27502
Texas Instruments TI-RTOS, when configured to use HeapMem heap(default), malloc returns a valid pointer to a small buffer on extremely large values, which can trigger an integer…
7.8
CVSS
0.3%
EPSS
No
On KEV
Description
Texas Instruments TI-RTOS, when configured to use HeapMem heap(default),
malloc returns a valid pointer to a small buffer on extremely large
values, which can trigger an integer overflow vulnerability in
'HeapMem_allocUnprotected' and result in code execution.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RO
Real-time Operating System · TI
All versions, or not specified · source: NVD
SC
Simplelink Cc13xx Software Development Kit · TI
before 4.40.00 · source: NVD
SC
Simplelink Cc26xx Software Development Kit · TI
before 4.40.00 · source: NVD
SC
Simplelink Cc32xx Software Development Kit · TI
before 4.10.03 · source: NVD
SM
Simplelink Msp432e401y · TI
All versions, or not specified · source: NVD
SM
Simplelink Msp432e411y · TI
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27502
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27502
Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-21-119-04
Product
https://www.ti.com/tool/TI-RTOS-MCU
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