CVE-2017-14970 Denial of service in n/a
Malformed OpenFlow messages cause memory leaks in Open vSwitch, potentially leading to denial of service, though exploitation requires controller access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-14970?
CVE-2017-14970 is a medium-severity denial of service vulnerability in n/a, published on 1 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In lib/ofp-util.c in Open vSwitch (OvS) before 2.8.1, there are multiple memory leaks while parsing malformed OpenFlow group mod messages. NOTE: the vendor disputes the relevance of this report, stating "it can only be triggered by an OpenFlow controller, but OpenFlow controllers have much more direct and powerful ways to force Open vSwitch to allocate memory, such as by inserting flows into the flow table."
Weakness: CWE-772
Which versions are affected by CVE-2017-14970?
It affects 1 product.
Linux distribution packages (2)
openvswitch SUSE:Linux Enterprise Server 12 SP3 | All versions | 2.7.0-3.10.1 |
openvswitch SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 2.7.0-3.10.1 |
Products include Openvswitch Openvswitch.
How do I fix CVE-2017-14970?
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-2017-14970 being exploited?
There is no known exploitation of CVE-2017-14970 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-14970, GHSA-jjh9-mpf5-64ww, SUSE-SU-2017:3232-1, UBUNTU-CVE-2017-14970.