Vulnerability · Published Sep 12, 2024 · Assigned by GitHub_M

CVE-2024-42483ESP-NOW Replay Attacks Vulnerability

Medium 6.5

In plain English

A medium-severity security flaw in esp-now from espressif. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 77.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

ESP-NOW Component provides a connectionless Wi-Fi communication protocol. An replay attacks vulnerability was discovered in the implementation of the ESP-NOW because the caches is not differentiated by message types, it is a single, shared resource for all kinds of messages, whether they are broadcast or unicast, and regardless of whether they are ciphertext or plaintext. This can result an attacker to clear the cache of its legitimate entries, there by creating an opportunity to re-inject previously captured packets. This vulnerability is fixed in 2.5.2.

Affected products (as reported)

Vendor	Product	Versions
espressif	esp-now	< 2.5.2

Weakness: CWE-349 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

https://github.com/espressif/esp-now/security/advisories/GHSA-wf6q-c2xr-77xj x_refsource_CONFIRM
https://github.com/espressif/esp-now/commit/4e30db50d541b2909d278ef0db05de1a3d7190ef x_refsource_MISC