CVE-2018-0139 Denial of service in Cisco Unified Customer Voice Portal
Unauthenticated remote attackers can cause a denial of service in Cisco Unified Customer Voice Portal by disrupting IVR connections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-0139?
CVE-2018-0139 is a high-severity denial of service vulnerability in Cisco Unified Customer Voice Portal, published on 22 Feb 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Interactive Voice Response (IVR) management connection interface for Cisco Unified Customer Voice Portal (CVP) could allow an unauthenticated, remote attacker to cause the IVR connection to disconnect, creating a system-wide denial of service (DoS) condition. The vulnerability is due to improper handling of a TCP connection request when the IVR connection is already established. An attacker could exploit this vulnerability by initiating a crafted connection to the IP address of the targeted CVP device. An exploit could allow the attacker to disconnect the IVR to CVP connection, creating a DoS condition that prevents the CVP from accepting new, incoming calls while the IVR automatically attempts to re-establish the connection to the CVP. This vulnerability affects Cisco Unified Customer Voice Portal (CVP) Software Release 11.5(1). Cisco Bug IDs: CSCve70560.
Weakness: CWE-20
Which versions are affected by CVE-2018-0139?
It affects 1 product.
Products include Cisco Unified Customer Voice Portal.
How do I fix CVE-2018-0139?
No fix has been published for CVE-2018-0139 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-2018-0139 being exploited?
There is no known exploitation of CVE-2018-0139 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Customer Voice Portal
Sources
Also known as GHSA-5g5r-5vxp-8rwg.