What is CVE-2023-39540?

CVE-2023-39540 is a medium-severity vulnerability in Silicon Labs Gecko Platform, classified under Buffer Over-read. CVSS score: 5.9/10. Published 2024-02-20.

How severe is CVE-2023-39540?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2023-39540 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Silicon Labs Gecko Platform

CVE-2023-39540

A denial of service vulnerability exists in the ICMP and ICMPv6 parsing functionality of Weston Embedded uC-TCP-IP v3.06.01. A specially crafted network packet can lead to an out-of-bounds read. An attacker can send a malicious packet to trigger this vulnerability.This vulnerability concerns a denial of service within the parsing an IPv4 ICMP packet.

EPSS: 0.008 (53.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Silicon Labs Gecko Platform — versions 4.3.1.0
Weston Embedded Uc-tcp-ip — versions v3.06.01
Weston-embedded Uc-tcp-ip — versions 3.06.01

Weakness classification (CWE)

Public proof-of-concept exploits

References

talos-cna@cisco.com (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-39540?: CVE-2023-39540 is a medium-severity vulnerability in Silicon Labs Gecko Platform, classified under Buffer Over-read. CVSS score: 5.9/10. Published 2024-02-20.
How severe is CVE-2023-39540?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2023-39540 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.