CVE-2016-6366: Cisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability

Vulnerability summary

CVE-2016-6366 is a high (CVSS 8.8) Classic Buffer Overflow vulnerability in Cisco Adaptive Security Appliance (ASA). It is known to be exploited: CISA lists it, first on 24-05-2022. EPSS estimates a 87.56% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities. 5 public exploits are recorded.

Timeline

1. 18-08-2016
   PublishedVulnerability first disclosed.
2. 24-05-2022
   Added to CISA KEVCisco Adaptive Security Appliance (ASA) SNMP Buffer Overflow Vulnerability
3. 14-06-2022
   CISA remediation dueApply updates per vendor instructions.
4. 12-01-2026
   Last modifiedVulnerability information updated.

Description

Buffer overflow in Cisco Adaptive Security Appliance (ASA) Software through 9.4.2.3 on ASA 5500, ASA 5500-X, ASA Services Module, ASA 1000V, ASAv, Firepower 9300 ASA Security Module, PIX, and FWSM devices allows remote authenticated users to execute arbitrary code via crafted IPv4 SNMP packets, aka Bug ID CSCva92151 or EXTRABACON.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.