CVE-2017-12278 Denial of service in Cisco Wireless LAN Controller
An authenticated remote attacker can cause a Cisco Wireless LAN Controller to restart by repeatedly polling specific MIBs, leading to a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-12278?
CVE-2017-12278 is a medium-severity denial of service vulnerability in Cisco Wireless Lan Controller Software, published on 2 Nov 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability in the Simple Network Management Protocol (SNMP) subsystem of Cisco Wireless LAN Controllers could allow an authenticated, remote attacker to cause an affected device to restart, resulting in a denial of service (DoS) condition. The vulnerability is due to a memory leak that occurs on an affected device after the device fails to deallocate a buffer that is used when certain MIBs are polled. An attacker who knows the SNMP Version 2 SNMP Read string or has valid SNMP Version 3 credentials for an affected device could repeatedly poll the affected MIB object IDs (OIDs) and consume available memory on the device. When memory is sufficiently depleted on the device, the device will restart, resulting in a DoS condition. Cisco Bug IDs: CSCvc71674.
Which versions are affected by CVE-2017-12278?
It affects 1 product.
Products include Cisco Wireless Lan Controller Software.
How do I fix CVE-2017-12278?
No fix has been published for CVE-2017-12278 yet. Limit exposure of the affected software until one is available.
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-2017-12278 being exploited?
There is no known exploitation of CVE-2017-12278 in the wild and no public exploit code.
Other vulnerabilities in Cisco Wireless Lan Controller Software
Sources
Also known as GHSA-h92p-pf33-v4vm.