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CVE-2024-38373

Amazon Freertos-plus-tcp vulnerability

9.6 CRITICALEPSS 0.61%
  1. Published24 Jun 2024

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H

Affected products

Amazon Freertos-plus-tcp≥ 4.0.0 < 4.1.1

Remediation

Fixed in
Amazon Freertos-plus-tcp≥ 4.1.1

Frequently asked

Is CVE-2024-38373 being actively exploited?

CVE-2024-38373 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.61%.

How severe is CVE-2024-38373?

CVE-2024-38373 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.61% probability of exploitation.

Which products are affected by CVE-2024-38373?

Affected products include Amazon Freertos-plus-tcp.

How do I fix CVE-2024-38373?

Upgrade affected software to a fixed version, for example Amazon Freertos-plus-tcp 4.1.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-38373 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.