Vulnerability Monitor

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CVE-2018-0172

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.

Published

2018-03-28T22:29:01.110

Last Modified

2025-01-27T20:01:56.580

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios - Yes
Operating System cisco ios_xe - Yes
Operating System cisco ios - Yes
Operating System cisco ios_xe - Yes
Hardware rockwellautomation allen-bradley_armorstratix_5700 - No
Hardware rockwellautomation allen-bradley_stratix_5400 - No
Hardware rockwellautomation allen-bradley_stratix_5410 - No
Hardware rockwellautomation allen-bradley_stratix_5700 - No
Hardware rockwellautomation allen-bradley_stratix_8000 - No
Hardware rockwellautomation allen-bradley_stratix_8300 - No
References