CVE-2018-0172

high · 8.6Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

Apply updates per vendor instructions.

Added 2022-03-03Remediation due 2022-03-17

A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow condition on the affected device, which will cause the device to reload and result in a DoS condition. Cisco Bug IDs: CSCvg62730.

8.6

CVSS

7.8%

EPSS (exploit prob.)

94th

EPSS percentile

2018-03-28

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weaknesses

CWE-20CWE-787

Affected products

Vendor	Product	Affected versions
cisco	ios	all versions
cisco	ios_xe	all versions
cisco	ios	all versions
cisco	ios_xe	all versions
rockwellautomation	allen-bradley_armorstratix_5700	all versions
rockwellautomation	allen-bradley_stratix_5400	all versions
rockwellautomation	allen-bradley_stratix_5410	all versions
rockwellautomation	allen-bradley_stratix_5700	all versions
rockwellautomation	allen-bradley_stratix_8000	all versions
rockwellautomation	allen-bradley_stratix_8300	all versions

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2018-0172