CVE-2018-0173
Cisco IOS and IOS XE Software Improper Input Valid - [Actively Exploited]
Description
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.
INFO
Published Date :
March 28, 2018, 10:29 p.m.
Last Modified :
July 24, 2024, 2:23 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
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).
Apply updates per vendor instructions.
Public PoC/Exploit Available at Github
CVE-2018-0173 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2018-0173
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2018-0173.
| URL | Resource |
|---|---|
| http://www.securityfocus.com/bid/103545 | Broken Link Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1040591 | Broken Link Third Party Advisory VDB Entry |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 | Third Party Advisory US Government Resource |
| https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 | Third Party Advisory US Government Resource |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr2 | Vendor Advisory |
| https://www.tenable.com/security/research/tra-2018-06 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-0173 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-0173 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Jul. 24, 2024
Action Type Old Value New Value Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Changed Reference Type http://www.securityfocus.com/bid/103545 Third Party Advisory, VDB Entry http://www.securityfocus.com/bid/103545 Broken Link, Third Party Advisory, VDB Entry Changed Reference Type http://www.securitytracker.com/id/1040591 Third Party Advisory, VDB Entry http://www.securitytracker.com/id/1040591 Broken Link, Third Party Advisory, VDB Entry Changed CPE Configuration AND OR *cpe:2.3:o:cisco:ios:denali-16.3.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:denali-16.3.4:*:*:*:*:*:*:* OR cpe:2.3:h:rockwellautomation:allen-bradley_armorstratix_5700:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5400:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5410:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5700:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8000:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* versions up to (including) 15.2\(6\)e0a *cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* versions up to (including) 15.2\(6\)e0a OR cpe:2.3:h:rockwellautomation:allen-bradley_armorstratix_5700:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5400:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5410:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5700:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8000:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:* versions up to (including) 15.2\(4a\)ea5 *cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:* versions up to (including) 15.2\(4a\)ea5 OR cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CWE Cisco Systems, Inc. CWE-20 -
Initial Analysis by [email protected]
Apr. 23, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr2 No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr2 Vendor Advisory Changed Reference Type https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 No Types Assigned https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 Third Party Advisory, US Government Resource Changed Reference Type https://www.tenable.com/security/research/tra-2018-06 No Types Assigned https://www.tenable.com/security/research/tra-2018-06 Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/103545 No Types Assigned http://www.securityfocus.com/bid/103545 Third Party Advisory, VDB Entry Changed Reference Type http://www.securitytracker.com/id/1040591 No Types Assigned http://www.securitytracker.com/id/1040591 Third Party Advisory, VDB Entry Changed Reference Type https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 No Types Assigned https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 Third Party Advisory, US Government Resource Added CWE CWE-20 Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios:denali-16.3.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:denali-16.3.4:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp2\):-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1000_series_route_processor_\(rp3\):-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:ios:denali-16.3.4:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:denali-16.3.4:*:*:*:*:*:*:* OR cpe:2.3:h:rockwellautomation:allen-bradley_armorstratix_5700:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5400:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5410:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_5700:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8000:-:*:*:*:*:*:*:* cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 20, 2018
Action Type Old Value New Value Added Reference https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 [No Types Assigned] Added Reference https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04 [No Types Assigned] -
CVE Modified by [email protected]
Mar. 31, 2018
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/103545 [No Types Assigned] -
CVE Modified by [email protected]
Mar. 30, 2018
Action Type Old Value New Value Added Reference https://www.tenable.com/security/research/tra-2018-06 [No Types Assigned] Added Reference http://www.securitytracker.com/id/1040591 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-0173 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2018-0173
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.32 }} 0.39%
score
0.86134
percentile