CVE-2018-10846 Information disclosure in gnutls
An attacker can recover plaintext via cache side-channel attacks in GnuTLS, exposing sensitive data in cross-VM environments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-10846?
CVE-2018-10846 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 22 Aug 2018. 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
A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.
Which versions are affected by CVE-2018-10846?
It affects 7 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Gnu Gnutls, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server and 1 more.
How do I fix CVE-2018-10846?
Upgrade to a fixed version.
Is CVE-2018-10846 being exploited?
There is no known exploitation of CVE-2018-10846 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-10846, GHSA-qgw6-cgvx-vw2g, UBUNTU-CVE-2018-10846.