Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2018-0173 | First vendor Publication | 2018-03-28 |
| Vendor | Cve | Last vendor Modification | 2019-10-09 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 8.6 | ||
| Base Score | 8.6 | Environmental Score | 8.6 |
| impact SubScore | 4 | Temporal Score | 8.6 |
| Exploitabality Sub Score | 3.9 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | None | User Interaction | None |
| Scope | Changed | Confidentiality Impact | None |
| Integrity Impact | None | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.8 | Attack Range | Network |
| Cvss Impact Score | 6.9 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| 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 could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a Relay Reply denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of encapsulated option 82 information that it receives in DHCPOFFER messages from DHCPv4 servers. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device, which the device would then forward to a DHCPv4 server. When the affected software processes the option 82 information that is encapsulated in the response from the server, an error could occur. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvg62754. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-0173 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-20 | Improper Input Validation |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Os | 1 | |
| Os | 1 |
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2020-12-05 | Cisco IOS DHCP relay reply integer underflow attempt RuleID : 46119 - Revision : 1 - Type : SERVER-OTHER |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2018-04-17 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20180328-dhcpr3-ios.nasl - Type : ACT_GATHER_INFO |
| 2018-04-17 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20180328-dhcpr3-iosxe.nasl - Type : ACT_GATHER_INFO |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2020-12-05 21:23:46 |
|
| 2020-05-23 01:04:57 |
|
| 2019-10-10 05:20:10 |
|
| 2018-04-24 00:19:18 |
|
| 2018-04-20 09:19:17 |
|
| 2018-03-31 09:18:37 |
|
| 2018-03-30 09:18:56 |
|
| 2018-03-29 05:18:19 |
|
