Input validation error in Cisco Application Policy Infrastructure Controller - CVE-2020-3139
Published: January 27, 2020
Vulnerability identifier: #VU24667
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-3139
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Application Policy Infrastructure Controller
Cisco Application Policy Infrastructure Controller
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass configured deny entries for specific IP ports.
The vulnerability exists in the out of band (OOB) management interface due to the configuration of specific IP table entries for which there is a programming logic error that results in the IP port being permitted. A remote attacker can send traffic to the OOB management interface and bypass configured IP table rules to drop specific IP port traffic. The attacker has no control over the configuration of the device itself.
How to mitigate CVE-2020-3139
Install updates from vendor's website.