CVE-2017-7393 Use after free in n/a
An authenticated client can trigger a double free in TigerVNC, causing denial of service or potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7393?
CVE-2017-7393 is a high-severity use after free vulnerability in n/a, published on 1 Apr 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In TigerVNC 1.7.1 (VNCSConnectionST.cxx VNCSConnectionST::fence), an authenticated client can cause a double free, leading to denial of service or potentially code execution.
Weakness: CWE-415
Which versions are affected by CVE-2017-7393?
It affects 1 product.
Products include Tigervnc Tigervnc.
How do I fix CVE-2017-7393?
Apply the vendor's patch.
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-2017-7393 being exploited?
There is no known exploitation of CVE-2017-7393 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-7393, GHSA-6qmp-qcvf-x3pr.