Signature Detail
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Short Name |
HTTP:CISCO:VOIP:PORT-INFO-DOS |
|---|---|
Severity |
Minor |
Recommended |
No |
Category |
HTTP |
Keywords |
Cisco VoIP Phone PortInformation DOS |
Release Date |
2003/04/22 |
Update Number |
1213 |
Supported Platforms |
di-5.3+, idp-4.0+, isg-3.0+, j-series-9.5+, mx-11.4+, srx-12.1+, srx-branch-12.1+, vmx-17.4+, vsrx-12.1+, vsrx3bsd-18.2+ |
HTTP: Cisco VoIP Phone PortInformation DOS
This signature detects attempts to exploit a known vulnerability in Cisco VoIP phones. Versions CP-7910 and later are vulnerable. Attackers can send an arbitrarily long (120000+) StreamID to the PortInformation script to cause an error message that displays a memory dump. Attackers can use this information to reconstruct the calling patterns of a particular phone.
Extended Description
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.
Affected Products
- Cisco voip_phone_cp-7910 3.0.0
- Cisco voip_phone_cp-7910 3.1.0
- Cisco voip_phone_cp-7910 3.2.0
- Cisco voip_phone_cp-7940 3.0.0
- Cisco voip_phone_cp-7940 3.1.0
- Cisco voip_phone_cp-7940 3.2.0
- Cisco voip_phone_cp-7960 3.0.0
- Cisco voip_phone_cp-7960 3.1.0
- Cisco voip_phone_cp-7960 3.2.0
References