Vulnerability Details : 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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2018-0471
Probability of exploitation activity in the next 30 days: 0.14%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 49 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2018-0471
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.1
|
MEDIUM | AV:A/AC:L/Au:N/C:N/I:N/A:C |
6.5
|
6.9
|
NIST |
|
7.4
|
HIGH | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
2.8
|
4.0
|
NIST |
CWE ids for CVE-2018-0471
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: ykramarz@cisco.com (Secondary)
-
The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-0471
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cdp-memleak
Cisco IOS XE Software Cisco Discovery Protocol Memory Leak VulnerabilityVendor Advisory
-
http://www.securityfocus.com/bid/105398
Cisco IOS XE Software CVE-2018-0471 Denial of Service VulnerabilityThird Party Advisory;VDB Entry
-
http://www.securitytracker.com/id/1041737
Cisco IOS/IOS XE Multiple Flaws Let Remote Users Cause the Target Device to Hang or Reload and Local Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
Products affected by CVE-2018-0471
- cpe:2.3:o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:16.6.2:*:*:*:*:*:*:*