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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2018-0421 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  8.6 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-772 Missing Release of Resource after Effective Lifetime cwe source acceptance level NIST  
CWE-399 Resource Management Errors Cisco Systems, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:cisco:prime_access_registrar:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
7.3		Up to (excluding)
7.3.0.4
 cpe:2.3:a:cisco:prime_access_registrar:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
8.0		Up to (excluding)
8.0.1.1
 cpe:2.3:a:cisco:prime_access_registrar_jumpstart:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
7.3		Up to (excluding)
7.3.0.4
 cpe:2.3:a:cisco:prime_access_registrar_jumpstart:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
8.0		Up to (excluding)
8.0.1.1

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0421
NVD Published Date:
10/05/2018
NVD Last Modified:
11/20/2024
Source:
Cisco Systems, Inc.