CVE-2015-3332 Denial of service in n/a
Local users can crash the system via TCP Fast Open if the feature is enabled, requiring kernel upgrades to mitigate.
- 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-2015-3332?
CVE-2015-3332 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 27 May 2015. 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 certain backport in the TCP Fast Open implementation for the Linux kernel before 3.18 does not properly maintain a count value, which allow local users to cause a denial of service (system crash) via the Fast Open feature, as demonstrated by visiting the chrome://flags/#enable-tcp-fast-open URL when using certain 3.10.x through 3.16.x kernel builds, including longterm-maintenance releases and ckt (aka Canonical Kernel Team) builds.
Weakness: CWE-399
Which versions are affected by CVE-2015-3332?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2015-3332?
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-2015-3332 being exploited?
There is no known exploitation of CVE-2015-3332 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2015-3332, GHSA-69wh-3xqf-4r4m, UBUNTU-CVE-2015-3332, USN-2620-1.