Espressif esp-now up to 2.5.1 addrs_num out-of-bounds

Summaryinfo

A vulnerability labeled as problematic has been found in Espressif esp-now up to 2.5.1. The affected element is an unknown function. Executing a manipulation of the argument addrs_num can lead to out-of-bounds. The identification of this vulnerability is CVE-2024-42484. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Espressif esp-now up to 2.5.1 and classified as critical. This vulnerability affects an unknown part. The manipulation of the argument addrs_num with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

ESP-NOW Component provides a connectionless Wi-Fi communication protocol. An Out-of-Bound (OOB) vulnerability was discovered in the implementation of the ESP-NOW group type message because there is no check for the addrs_num field of the group type message. This can result in memory corruption related attacks. Normally there are two fields in the group information that need to be checked, i.e., the addrs_num field and the addrs_list fileld. Since we only checked the addrs_list field, an attacker can send a group type message with an invalid addrs_num field, which will cause the message handled by the firmware to be much larger than the current buffer, thus causing a memory corruption issue that goes beyond the payload length.

The advisory is available at github.com. This vulnerability was named CVE-2024-42484 since 08/02/2024. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 2.5.2 eliminates this vulnerability.

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Productinfo

Vendor

• Espressif

Name

• esp-now

Version

• 2.5.0
• 2.5.1

Website

• Product: https://github.com/espressif/esp-now/

CPE 2.3info

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CPE 2.2info

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