Title: Avaya 4602SW SIP Phone Cnonce Parameter Authentication Spoofing Vulnerability
Severity: MODERATE
Description:
Avaya 4602SW SIP Phone and SIP call server are a VoIP solutions for the Microsoft Windows operating system.
The software is prone to an authentication-spoofing vulnerability.
The same 'cnonce' used during MD5 digest authentication is used for communication with the SIP call server for the lifetime of the relationship; this allows an attacker to hijack communications by way of a man-in-the-middle attack.
If successful, an attacker can impersonate a SIP call server, compromising the confidentiality of a victim's phone conversations.
Affected Products:
- Avaya 4602 SW IP Phone (Model 4602D02A)
References:
- Avaya Inc.: Avaya Homepage
- Sipera VIPER Lab: Avaya 4602SW SIP Phone vulnerable to server impersonation
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