CVE-2018-0167 on CISA KEV

Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitra

01What CISA says about this vulnerability

Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• tools.cisco.com — https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2…
• ics-cert.us-cert.gov — https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03
• ics-cert.us-cert.gov — https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
• www.securitytracker.com — http://www.securitytracker.com/id/1040586
• ics-cert.us-cert.gov — https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
• www.securityfocus.com — http://www.securityfocus.com/bid/103564

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / Cisco IOS, IOS XE, and IOS XR	Cisco IOS, IOS XE, and IOS XR

06Detection

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