Vulnerability Monitor

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CVE-2018-0165

A vulnerability in the Internet Group Management Protocol (IGMP) packet-processing functionality of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to exhaust buffers on an affected device, resulting in a denial of service (DoS) condition, aka a Memory Leak. The vulnerability is due to the affected software insufficiently processing IGMP Membership Query packets that are sent to an affected device. An attacker could exploit this vulnerability by sending a large number of IGMP Membership Query packets, which contain certain values, to an affected device. A successful exploit could allow the attacker to exhaust buffers on the affected device, resulting in a DoS condition that requires the device to be reloaded manually. This vulnerability affects: Cisco Catalyst 4500 Switches with Supervisor Engine 8-E, if they are running Cisco IOS XE Software Release 3.x.x.E and IP multicast routing is configured; Cisco devices that are running Cisco IOS XE Software Release 16.x, if IP multicast routing is configured. Cisco Bug IDs: CSCuw09295, CSCve94496.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.4, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 47 products from cisco, from cisco, from cisco and 44 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-03-28T22:29:00.860

Last Modified

2024-11-21T03:37:38.727

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 7.4 (HIGH)

CVSSv2 Vector

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

Access Vector: ADJACENT_NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

6.5

Impact Score

6.9

Weaknesses

Type: Secondary
CWE-399
Type: Primary
CWE-772

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios_xe	15.2\(3\)e	Yes
Hardware	cisco	catalyst_4000	-	No
Operating System	cisco	ios_xe	denali-16.3.3	Yes
Hardware	cisco	catalyst_3850-12s-e	-	No
Hardware	cisco	catalyst_3850-12s-s	-	No
Hardware	cisco	catalyst_3850-12xs-e	-	No
Hardware	cisco	catalyst_3850-12xs-s	-	No
Hardware	cisco	catalyst_3850-16xs-e	-	No
Hardware	cisco	catalyst_3850-16xs-s	-	No
Hardware	cisco	catalyst_3850-24p-e	-	No
Hardware	cisco	catalyst_3850-24p-l	-	No
Hardware	cisco	catalyst_3850-24p-s	-	No
Hardware	cisco	catalyst_3850-24pw-s	-	No
Hardware	cisco	catalyst_3850-24s-e	-	No
Hardware	cisco	catalyst_3850-24s-s	-	No
Hardware	cisco	catalyst_3850-24t-e	-	No
Hardware	cisco	catalyst_3850-24t-l	-	No
Hardware	cisco	catalyst_3850-24t-s	-	No
Hardware	cisco	catalyst_3850-24u-e	-	No
Hardware	cisco	catalyst_3850-24u-l	-	No
Hardware	cisco	catalyst_3850-24u-s	-	No
Hardware	cisco	catalyst_3850-24xs-e	-	No
Hardware	cisco	catalyst_3850-24xs-s	-	No
Hardware	cisco	catalyst_3850-24xu-e	-	No
Hardware	cisco	catalyst_3850-24xu-l	-	No
Hardware	cisco	catalyst_3850-24xu-s	-	No
Hardware	cisco	catalyst_3850-32xs-e	-	No
Hardware	cisco	catalyst_3850-32xs-s	-	No
Hardware	cisco	catalyst_3850-48f-e	-	No
Hardware	cisco	catalyst_3850-48f-l	-	No
Hardware	cisco	catalyst_3850-48f-s	-	No
Hardware	cisco	catalyst_3850-48p-e	-	No
Hardware	cisco	catalyst_3850-48p-l	-	No
Hardware	cisco	catalyst_3850-48p-s	-	No
Hardware	cisco	catalyst_3850-48pw-s	-	No
Hardware	cisco	catalyst_3850-48t-e	-	No
Hardware	cisco	catalyst_3850-48t-l	-	No
Hardware	cisco	catalyst_3850-48t-s	-	No
Hardware	cisco	catalyst_3850-48u-e	-	No
Hardware	cisco	catalyst_3850-48u-l	-	No
Hardware	cisco	catalyst_3850-48u-s	-	No
Hardware	cisco	catalyst_3850-48xs-e	-	No
Hardware	cisco	catalyst_3850-48xs-f-e	-	No
Hardware	cisco	catalyst_3850-48xs-f-s	-	No
Hardware	cisco	catalyst_3850-48xs-s	-	No
Hardware	cisco	catalyst_c3850-12x48u-e	-	No
Hardware	cisco	catalyst_c3850-12x48u-l	-	No
Hardware	cisco	catalyst_c3850-12x48u-s	-	No

References

http://www.securityfocus.com/bid/103568 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1040592 Third Party Advisory, VDB Entry ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-igmp Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/103568 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1040592 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-igmp Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For cisco's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.