Description
A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliances could allow an unauthenticated, remote attacker to exhaust system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability exists because the affected software improperly manages memory resources for TCP connections to a targeted device. An attacker could exploit this vulnerability by establishing a high number of TCP connections to the data interface of an affected device via IPv4 or IPv6. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and result in a DoS condition. System recovery may require manual intervention. Cisco Bug IDs: CSCvf36610.
Problem types
Product status
References
www.securityfocus.com/bid/105098 (105098)
tools.cisco.com/...ecurityAdvisory/cisco-sa-20180815-wsa-dos (20180815 Cisco Web Security Appliance Web Proxy Memory Exhaustion Denial of Service Vulnerability)
www.securitytracker.com/id/1041535 (1041535)
www.securityfocus.com/bid/105098 (105098)
tools.cisco.com/...ecurityAdvisory/cisco-sa-20180815-wsa-dos (20180815 Cisco Web Security Appliance Web Proxy Memory Exhaustion Denial of Service Vulnerability)
www.securitytracker.com/id/1041535 (1041535)