CVE-2023-2906 Wireshark CP2179 divide by zero
An attacker can cause a denial of service in Wireshark by sending a crafted CP2179 packet that triggers a divide by zero error.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-2906?
CVE-2023-2906 is a medium-severity denial of service vulnerability in Wireshark Wireshark, published on 25 Aug 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Due to a failure in validating the length provided by an attacker-crafted CP2179 packet, Wireshark versions 2.0.0 through 4.0.7 is susceptible to a divide by zero allowing for a denial of service attack.
Weakness: CWE-369
Which versions are affected by CVE-2023-2906?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2023-2906?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-2906 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2906 exists.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as AZL-28486, AZL-44175, CLSA-2025-1765984777, CLSA-2026-1777390184, DEBIAN-CVE-2023-2906, GHSA-hhx4-xmf9-97g5 and 1 more.