VAR-200210-0184

Vulnerability from variot - Updated: 2025-04-03 22:38

The web server for Cisco IP Phone (VoIP) models 7910, 7940, and 7960 allows remote attackers to cause a denial of service (reset) and possibly read sensitive memory via a large integer value in (1) the stream ID of the StreamingStatistics script, or (2) the port ID of the PortInformation script. The 7900 series VoIP Phones are a Voice-Over-IP solution distributed by Cisco Systems. It is possible to deny service to users of this line of phones. By placing a request to the /StreamingStatistics script with a stream ID (i.e. http://www.example.com/StreamingStatistics?<stream> where <stream> is an integer value) of arbitrarily high value, the phone will reset itself, creating the inability to place or receive calls for a period of up to thirty seconds. This has been reportedly reproduced by passing stream ID values of greater than 32768, and consistently reproduced with a value of 120000. The web interface of the VoIP Phone 7900 series has a loophole in processing abnormal requests, which can lead to remote attackers to conduct denial of service attacks. VoIP Phone 7900 series has a built-in monitoring port 80 WEB service. This service provides a script page for displaying streaming statistics. Users can use \" target=\"_blank\" > http://www.example.com/StreamingStatistics? < stream > Form access, because these pages can be accessed without authentication, any attacker can submit a relatively high value to the service program, which will cause the phone to reset. According to the test, providing a value higher than 32768 can be reset This vulnerability has been discovered, and requesting 120000 values ​​can reproduce the vulnerability stably

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