CVE-2023-2857 Denial of service in Wireshark
A crafted BLF capture file causes Wireshark to crash, resulting in a denial of service for users analyzing network traffic.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-2857?
CVE-2023-2857 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 26 May 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file
Weakness: CWE-787
Which versions are affected by CVE-2023-2857?
It affects 2 products.
Products include Debian Debian Linux, Wireshark Wireshark.
How do I fix CVE-2023-2857?
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-2023-2857 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2857 exists.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2023-2857, GHSA-fx88-cqh9-ffwj, UBUNTU-CVE-2023-2857.