Title: eStara Softphone Multiple Denial of Service Vulnerabilities
Severity: MODERATE
Description:
eStara Softphone is a commercial SIP (Session Initiation Protocol) VOIP (Voice Over IP) phone for the Microsoft Windows platform. It also supports SDP (Session Description Protocol) for multimedia sessions.
eStara Softphone is prone to multiple denial-of-service vulnerabilities when processing malformed VOIP headers.
The following specific issues were identified:
- When processing a negative integer value in the 'Expires' field of a SIP header, the device will crash.
- When processing format-string specifiers in SDP headers, the device will stop responding.
- When processing a 'Content-Length' field in SIP headers with a value longer than 9 characters, the device will crash.
Affected Products:
- eStara SoftPhone 3.0.1 .14
- eStara SoftPhone 3.0.1 .46
- eStara SoftPhone 3.0.1 .47
References:
- eStara: Softphone Home Page
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