What’s Vulnerable › Vulnerabilities

CVE-2023-0668: Wireshark IEEE-C37.118 parsing buffer overflow

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-07 · updated 2026-06-17
• Weakness: CWE-125

Description

Due to failure in validating the length provided by an attacker-crafted IEEE-C37.118 packet, Wireshark version 4.0.5 and prior, by default, is susceptible to a heap-based buffer overflow, and possibly code execution in the context of the process running Wireshark.

Affected products

• Debian Linux: 12.0
• Wireshark Foundation Wireshark: from 3.6.0 before 3.6.14; from 4.0.0 before 4.0.6 — fixed in 3.6.14, 4.0.6

How to fix

Upgrade to a fixed version: Wireshark Foundation Wireshark 3.6.14, 4.0.6. Check the vendor advisory for mitigations.

References

• https://gitlab.com/wireshark/wireshark/-/issues/19087
• https://security.gentoo.org/glsa/202309-02
• https://takeonme.org/cves/CVE-2023-0668.html
• https://www.debian.org/security/2023/dsa-5429
• https://www.wireshark.org/docs/relnotes/wireshark-4.0.6.html
• https://www.wireshark.org/security/wnpa-sec-2023-19.html
• https://gitlab.com/wireshark/wireshark/-/issues/19087
• https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html
• https://security.gentoo.org/glsa/202309-02
• https://takeonme.org/cves/CVE-2023-0668.html
• https://www.debian.org/security/2023/dsa-5429
• https://www.wireshark.org/docs/relnotes/wireshark-4.0.6.html

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