CVE Vulnerability

CVE-2018-0421

A vulnerability in TCP connection management in Cisco Prime Access Registrar could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition when the application unexpectedly restarts. The vulnerability is due to incorrect handling of incoming TCP SYN packets to specific listening ports. The improper handling of the TCP SYN packets could cause a system file description to be allocated and not freed. An attacker could exploit this vulnerability by sending a crafted stream of TCP SYN packets to the application. A successful exploit could allow the attacker to cause the application to eventually restart if a file description cannot be obtained.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

8.6 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-cpar-dos Vendor Advisory
http://www.securitytracker.com/id/1041684 Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/105282 Third Party Advisory VDB Entry
Configurations

Configuration 1

cpe:2.3:a:cisco:prime_access_registrar:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_access_registrar_jumpstart:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_access_registrar_jumpstart:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:prime_access_registrar:*:*:*:*:*:*:*:*
Information

Published : 2018-10-05 02:29

Updated : 2019-10-09 11:32

NVD link : CVE-2018-0421

Mitre link : CVE-2018-0421

Products Affected
No products.
CWE
CWE-772