CVE-2015-8738 Denial of service in n/a
Remote attackers can crash Wireshark via crafted S7COMM packets due to a divide-by-zero error in the dissector.
- 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-2015-8738?
CVE-2015-8738 is a medium-severity denial of service vulnerability in Wireshark Wireshark, published on 4 Jan 2016. 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
The s7comm_decode_ud_cpu_szl_subfunc function in epan/dissectors/packet-s7comm_szl_ids.c in the S7COMM dissector in Wireshark 2.0.x before 2.0.1 does not validate the list count in an SZL response, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted packet.
Weakness: CWE-20
Which versions are affected by CVE-2015-8738?
It affects 1 product.
Products include Wireshark Wireshark.
How do I fix CVE-2015-8738?
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-2015-8738 being exploited?
There is no known exploitation of CVE-2015-8738 in the wild and no public exploit code.
Other vulnerabilities in Wireshark Wireshark
Sources
Also known as DEBIAN-CVE-2015-8738, GHSA-7pv3-cg97-63h8, UBUNTU-CVE-2015-8738.