Vulnerability · Published Jun 24, 2024 · Assigned by GitHub_M
CVE-2024-38373FreeRTOS-Plus-TCP Buffer Over-Read in DNS Response Parser
Critical 9.6
In plain English
A critical-severity security flaw in FreeRTOS-Plus-TCP from FreeRTOS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| FreeRTOS | FreeRTOS-Plus-TCP | >= 4.0.0, <= 4.1.0 |
Weakness: CWE-126 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H