CVE-2019-16026 Cisco Mobility Management Entity Denial of Service Vulnerability
An unauthenticated remote attacker can cause a denial of service on connected eNodeBs by sending crafted SCTP messages to the Cisco MME.
- 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-2019-16026?
CVE-2019-16026 is a medium-severity denial of service vulnerability in Cisco ASR 5000 Series Software, published on 26 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the implementation of the Stream Control Transmission Protocol (SCTP) on Cisco Mobility Management Entity (MME) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an eNodeB that is connected to an affected device. The vulnerability is due to insufficient input validation of SCTP traffic. An attacker could exploit this vulnerability by leveraging a man-in-the-middle position between the eNodeB and the MME and then sending a crafted SCTP message to the MME. A successful exploit would cause the MME to stop sending SCTP messages to the eNodeB, triggering a DoS condition.
Weakness: CWE-20
Which versions are affected by CVE-2019-16026?
It affects 1 product.
Products include Cisco Staros.
How do I fix CVE-2019-16026?
No fix has been published for CVE-2019-16026 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-2019-16026 being exploited?
There is no known exploitation of CVE-2019-16026 in the wild and no public exploit code.
Other vulnerabilities in Cisco ASR 5000 Series Software
- CVE-2023-20046 Auth bypass in Cisco ASR 5000 Series Software
- CVE-2019-1869 Cisco StarOS Denial of Service Vulnerability
- CVE-2018-0369 Denial of service in Cisco StarOS unknown
- CVE-2017-6707 Command injection in Cisco StarOS
- CVE-2021-1539 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
Sources
Also known as GHSA-fhjc-mpvv-5r8g.