Amazon FreeRTOS up to 1.4.8 on AWS MQTT Packet prvProcessReceivedPublish input validation

Summaryinfo

A vulnerability labeled as problematic has been found in Amazon FreeRTOS up to 1.4.8 on AWS. The affected element is the function prvProcessReceivedPublish of the component MQTT Packet Handler. Such manipulation as part of Packet leads to input validation. This vulnerability is documented as CVE-2019-13120. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Amazon FreeRTOS up to 1.4.8 on AWS and classified as problematic. Affected by this issue is the function prvProcessReceivedPublish of the component MQTT Packet Handler. The manipulation as part of a Packet leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality. CVE summarizes:

Amazon FreeRTOS up to and including v1.4.8 for AWS lacks length checking in prvProcessReceivedPublish, resulting in leakage of arbitrary memory contents on a device to an attacker. An attacker sends a malformed MQTT publish packet, and waits for an MQTTACK packet containing the leaked data.

The weakness was released 10/07/2019 (Website). The advisory is available at aws.amazon.com. This vulnerability is handled as CVE-2019-13120 since 06/30/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/27/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Amazon

Name

• FreeRTOS

Version

• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.6
• 1.4.7
• 1.4.8

License

• commercial

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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CVSSv3info

CVSSv2info

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Entryinfo

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