High severity · published Jun 24, 2024
CVE-2024-38373
FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser
8.1
CVSS
0.6%
EPSS
No
On KEV
Description
FreeRTOS-Plus-TCP is a lightweight TCP/IP stack for FreeRTOS. FreeRTOS-Plus-TCP versions 4.0.0 through 4.1.0 contain a buffer over-read issue in the DNS Response Parser when parsing domain names in a DNS response. A carefully crafted DNS response with domain name length value greater than the actual domain name length, could cause the parser to read beyond the DNS response buffer. This issue affects applications using DNS functionality of the FreeRTOS-Plus-TCP stack. Applications that do not use DNS functionality are not affected, even when the DNS functionality is enabled. This vulnerability has been patched in version 4.1.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
FreeRTOS-Plus-TCP · FreeRTOS
>= 4.0.0, <= 4.1.0 · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-38373
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-38373
Release Notes
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1
Vendor Advisory
https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv
More from FreeRTOS-Plus-TCP
7.7
CVE-2026-102551
Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling
5.9
CVE-2026-102552
Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver