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Computer Emergency Response Team of Mauritius (CERT-MU)

VN-2019-30


Cisco Web Security Appliance Unauthorized Device Reset Vulnerability
Severity Rating: High
Systems Affected:
  • Cisco Web Security Appliance (WSA)
Description
A vulnerability has been reported in the web management interface of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) and could allow an authenticated, remote attacker to perform an unauthorized system reset on an affected device. The vulnerability is caused due to improper authorization controls for a specific URL in the web management interface. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. Successful exploitation of the vulnerability could have a twofold impact: the attacker could either change the administrator password, gaining privileged access, or reset the network configuration details, causing a denial of service (DoS) condition. In both scenarios, manual intervention is required to restore normal operations.
Solution
Users are advised to apply updates.
More information is available on:
Vendor Information
Cisco
References
Cisco Security Bulletin
Postal address
Mauritian Computer Emergency Response Team (CERT-MU)
National Computer Board
7th Floor, Stratton Court
La Poudriere Street
Port Louis