CVE-2018-15396 Cisco Unity Connection File Upload Denial of Service Vulnerability
An authenticated administrator can cause a denial of service by uploading large files that exhaust disk space in Cisco Unity Connection.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-15396?
CVE-2018-15396 is a medium-severity denial of service vulnerability in Cisco Unity Connection, published on 5 Oct 2018. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability in the Bulk Administration Tool (BAT) for Cisco Unity Connection could allow an authenticated, remote attacker to cause high disk utilization, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software does not restrict the maximum size of certain files that can be written to disk. An attacker who has valid administrator credentials for an affected system could exploit this vulnerability by sending a crafted, remote connection request to an affected system. A successful exploit could allow the attacker to write a file that consumes most of the available disk space on the system, causing application functions to operate abnormally and leading to a DoS condition.
Which versions are affected by CVE-2018-15396?
It affects 1 product.
Products include Cisco Unity Connection.
How do I fix CVE-2018-15396?
No fix has been published for CVE-2018-15396 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-2018-15396 being exploited?
There is no known exploitation of CVE-2018-15396 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unity Connection
Sources
Also known as GHSA-fvmw-88r5-vrp4.