CVE-2017-6420 Use after free in n/a
Remote attackers can cause a denial of service in ClamAV via a crafted PE file with WWPack compression, triggering a use-after-free error.
- 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-2017-6420?
CVE-2017-6420 is a medium-severity use after free vulnerability in Clamav Clamav, published on 7 Aug 2017. 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 wwunpack function in libclamav/wwunpack.c in ClamAV 0.99.2 allows remote attackers to cause a denial of service (use-after-free) via a crafted PE file with WWPack compression.
Weakness: CWE-416
Which versions are affected by CVE-2017-6420?
It affects 1 product.
Products include Clamav Clamav.
How do I fix CVE-2017-6420?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2017-6420 being exploited?
There is no known exploitation of CVE-2017-6420 in the wild and no public exploit code.
Other vulnerabilities in Clamav Clamav
Sources
Also known as DEBIAN-CVE-2017-6420, GHSA-6v8q-f99w-979p, UBUNTU-CVE-2017-6420.