CVE-2018-0167: Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
There is a buffer overflow vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software which could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code.
| Vendor | Cisco |
|---|---|
| Product | IOS, XR, and XE Software |
| Date added to KEV | 2022-03-03 |
| Due date (BOD 22-01) | 2022-03-17 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-119 |
| Required action | Apply updates per vendor instructions. |
What to do
- Identify every instance of Cisco IOS, XR, and XE Software in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Apply updates per vendor instructions.
- Federal civilian agencies must act by 2022-03-17 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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Sources
- NVD entry for CVE-2018-0167 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://nvd.nist.gov/vuln/detail/CVE-2018-0167