var-201905-0503
Vulnerability from variot

A vulnerability in the call-handling functionality of Session Initiation Protocol (SIP) Software for Cisco IP Phone 7800 Series and 8800 Series could allow an unauthenticated, remote attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to incomplete error handling when XML data within a SIP packet is parsed. An attacker could exploit this vulnerability by sending a SIP packet that contains a malicious XML payload to an affected phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition. Multiple Cisco Products are prone to an denial-of-service vulnerability. This issue is being tracked by Cisco Bug IDs CSCvm39405, CSCvo19825, CSCvo21348, and CSCvo23532. This issue affects following cisco products if they are running a SIP Software release prior to the first fixed release. IP Conference Phone 7832 IP Conference Phone 8832 IP Phone 7811 IP Phone 7821 IP Phone 7841 IP Phone 7861 IP Phone 8811 IP Phone 8841 IP Phone 8845 IP Phone 8851 IP Phone 8861 IP Phone 8865 Unified IP 8831 Conference Phone1 Unified IP 8831 Conference Phone for Third-Party Call Control2 Wireless IP Phone 8821 Wireless IP Phone 8821-EX. This vulnerability stems from improper management of system resources (such as memory, disk space, files, etc.) by network systems or products

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