Input validation error in Cisco Mobility Management Entity - CVE-2019-16026
Published: January 9, 2020
Vulnerability identifier: #VU24158
CSH Severity: Medium
CVSS v4: 8.2 [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]
CVE-ID: CVE-2019-16026
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Cisco Mobility Management Entity
How to mitigate CVE-2019-16026
Install updates from vendor's website.
Cisco Mobility Management Entity - update to 21.16.1