CVE-2018-0173 · netVigilance record NV22-0150

Cisco IOS and IOS XE Software Improper Input Validation

past due

What to do

Apply updates per vendor instructions.

CISA deadline 2022-03-17 · passed 4 years 5 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets can allow for denial-of-service (DoS).

Who is affected

Cisco IOS and IOS XE Software. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-20.

Timeline

2022-03-03
Added to CISA KEVExploitation in the wild confirmed by CISA
2022-03-17
CISA remediation deadlinepassed 4 years 5 months ago

Sources

NVD entry for CVE-2018-0173 nvd.nist.gov/vuln/detail/CVE-2018-0173
CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2018-0173