Exploited vulnerability · CISA KEV

Is CVE-2016-6367 exploited? Yes: in CISA KEV since 24 May 2022

Gociux · Cisco Adaptive Security Appliance (ASA) · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2016-6367, Cisco Adaptive Security Appliance (ASA) CLI Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 24 May 2022, 2105 days after it was published. It affects Cisco Adaptive Security Appliance (ASA), an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply updates per vendor instructions.

What it is

A vulnerability in the command-line interface (CLI) parser of Cisco ASA software could allow an authenticated, local attacker to create a denial-of-service (DoS) condition or potentially execute code.

What to do

1. Check whether you run it. Look for Adaptive Security Appliance (ASA) in your asset inventory, including appliances and cloud images. Stack check lists every exploited Cisco CVE at once.
2. Apply the fix. Apply updates per vendor instructions.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 18 Aug 2016.
4. Get told next time. Email alerts when CISA adds a CVE for Cisco.

Other exploited CVEs in Adaptive Security Appliance (ASA)

• CVE-2014-2120: Cisco Adaptive Security Appliance (ASA) Cross-Site Scripting (XSS) Vulnerability (12 Nov 2024)
• CVE-2016-6366: Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability (24 May 2022)
• CVE-2018-0296: Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability (3 Nov 2021)

References

• nvd.nist.gov/vuln/detail/CVE-2016-6367

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in May 2022 · Cisco scorecard · act-now radar.