CVE-2018-7321 Denial of service in n/a
An attacker can cause a denial of service in Wireshark by sending a crafted Thrift packet that triggers a large loop during dissection.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-7321?
CVE-2018-7321 is a high-severity denial of service vulnerability in Wireshark Wireshark, published on 23 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-thrift.c had a large loop that was addressed by not proceeding with dissection after encountering an unexpected type.
Weakness: CWE-834
Which versions are affected by CVE-2018-7321?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2018-7321?
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-2018-7321 being exploited?
There is no known exploitation of CVE-2018-7321 in the wild and no public exploit code.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as DEBIAN-CVE-2018-7321, GHSA-4prf-q958-fvj7, UBUNTU-CVE-2018-7321.