SB2020030511 - Denial of service in Cisco ESA, Cisco WSA, and Cisco SMA

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Main Vulnerability Database SB2020030511

SB2020030511 - Denial of service in Cisco ESA, Cisco WSA, and Cisco SMA

Published: March 5, 2020 Updated: May 11, 2020

Security Bulletin ID SB2020030511
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Input validation error (CVE-ID: CVE-2020-3164)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of specific HTTP request headers. A remote attacker can send a specially crafted HTTP request to an affected device, trigger a prolonged status of high CPU utilization relative to the GUI process(es) and perform a denial of service (DoS) attack.


2) Open redirect (CVE-ID: CVE-2020-3178)

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper input validation of the parameters of an HTTP request in the web-based GUI of Cisco AsyncOS Software for Cisco Content Security Management Appliance (SMA). A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.


Remediation

Install update from vendor's website.

References