Executive Summary

Summary
Title Cisco Web Security Appliance Layer 4 Traffic Monitor Security Bypass Vulnerability
Informations
Name cisco-sa-20180606-wsa First vendor Publication 2018-06-06
Vendor Cisco Last vendor Modification 2018-06-06
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A vulnerability in traffic-monitoring functions in Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to circumvent Layer 4 Traffic Monitor (L4TM) functionality and bypass security protections.

The vulnerability is due to a change in the underlying operating system software that is responsible for monitoring affected traffic. An attacker could exploit this vulnerability by sending crafted IP packets to an affected device. A successful exploit could allow the attacker to pass traffic through the device, which the WSA was configured to deny. This vulnerability affects both IPv4 and IPv6 traffic.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-wsa ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-wsa"]

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Original Source

Url : http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco (...)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 5

Nessus® Vulnerability Scanner

Date Description
2018-06-14 Name : The remote security appliance is affected by a security feature bypass vulner...
File : cisco-sa-20180606-wsa.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
Date Informations
2018-07-20 21:22:14
  • Multiple Updates
2018-06-07 17:21:02
  • Multiple Updates
2018-06-06 21:19:01
  • First insertion