| Vulnerability Name: | CVE-2018-0172 (CCN-140956) | ||||||||||||
| Assigned: | 2017-11-27 | ||||||||||||
| Published: | 2018-03-28 | ||||||||||||
| Updated: | 2020-09-04 | ||||||||||||
| Summary: | 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. | ||||||||||||
| CVSS v3 Severity: | 8.6 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H) 7.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
7.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
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| Vulnerability Type: | CWE-787 | ||||||||||||
| Vulnerability Consequences: | Denial of Service | ||||||||||||
| References: | Source: MITRE Type: CNA CVE-2018-0172 Source: BID Type: Third Party Advisory, VDB Entry 103552 Source: CCN Type: BID-103552 Cisco IOS and IOS XE Software CVE-2018-0172 Denial of Service Vulnerability Source: SECTRACK Type: Third Party Advisory, VDB Entry 1040591 Source: XF Type: UNKNOWN cisco-cve20180172-dos(140956) Source: MISC Type: Third Party Advisory, US Government Resource https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 Source: MISC Type: Third Party Advisory, US Government Resource https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 Source: CCN Type: Cisco Security Advisory cisco-sa-20180328-dhcpr1 Cisco IOS and IOS XE Software DHCP Version 4 Relay Heap Overflow Denial of Service Vulnerability Source: CONFIRM Type: Vendor Advisory https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1 Source: CCN Type: CYBERSECURITY & INFRASTRUCTURE SECURITY AGENCY KNOWN EXPLOITED VULNERABILITIES CATALOG Source: MISC Type: Third Party Advisory https://www.tenable.com/security/research/tra-2018-06 | ||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration 2: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||
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