Input validation error in Cisco Mobility Management Entity - CVE-2019-16026
Published: January 9, 2020
Vulnerability identifier: #VU24158
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-16026
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Mobility Management Entity
Cisco Mobility Management Entity
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack on an eNodeB that is connected to an affected device.
The vulnerability exists due to insufficient validation of user-supplied input in the implementation of the Stream Control Transmission Protocol (SCTP). A remote attacker can leverage a man-in-the-middle
position between the eNodeB and the MME, then send a specially crafted SCTP
message to the MME and cause the MME to stop
sending SCTP messages to the eNodeB, results in denial of service condition.
How to mitigate CVE-2019-16026
Install updates from vendor's website.