Vulnerability Monitor

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CVE-2018-0471

A vulnerability in the Cisco Discovery Protocol (CDP) module of Cisco IOS XE Software Releases 16.6.1 and 16.6.2 could allow an unauthenticated, adjacent attacker to cause a memory leak that may lead to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain CDP packets. An attacker could exploit this vulnerability by sending certain CDP packets to an affected device. A successful exploit could cause an affected device to continuously consume memory and eventually result in a memory allocation failure that leads to a crash, triggering a reload of the affected device.

Published

2018-10-05T14:29:04.920

Last Modified

2024-11-21T03:38:18.187

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 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-400
Type: Primary
CWE-772

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	cisco	ios_xe	16.6.1	Yes
Operating System	cisco	ios_xe	16.6.2	Yes

References

http://www.securityfocus.com/bid/105398 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1041737 Third Party Advisory, VDB Entry ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cdp-memleak Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/105398 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1041737 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cdp-memleak Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)