CVE-2016-9602 Path traversal in Qemu
A privileged guest user can escape the VirtFS shared folder to access the host file system and potentially escalate privileges on the host.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-9602?
CVE-2016-9602 is a high-severity path traversal vulnerability in Debian Debian Linux, published on 26 Apr 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
Weakness: CWE-59
Which versions are affected by CVE-2016-9602?
It affects 2 products.
Products include Debian Debian Linux, Qemu Qemu.
How do I fix CVE-2016-9602?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2016-9602 being exploited?
There is no known exploitation of CVE-2016-9602 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2016-9602, GHSA-43hg-r8gj-3mp9, UBUNTU-CVE-2016-9602.