Out-of-bounds Read in Amazon Freertos-Plus-Tcp
CVE-2024-38373
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Amazon Freertos-Plus-Tcp
- Freertos Freertos-Plus-Tcp — versions >= 4.0.0, <= 4.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-ppcp-rg65-58mv (Vendor Advisory)
- github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.1.1 (Release Notes)
Frequently asked questions
- What is CVE-2024-38373?
- CVE-2024-38373 is a critical-severity vulnerability in Amazon Freertos-Plus-Tcp, classified under Buffer Over-read. CVSS score: 9.6/10. Published 2024-06-24.
- How severe is CVE-2024-38373?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2024-38373 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.