Pingtel » Xpressa : Security Vulnerabilities, CVEs, CVSS score >= 5

application.cgi in the Pingtel Xpressa handset running firmware 2.1.11.24 allows remote authenticated users to cause a denial of service (VxWorks OS crash) via a long HTTP GET request, possibly triggering a buffer overflow.

Pingtel Xpressa 1.2.5 through 2.0.1 uses predictable (1) Call-ID, (2) CSeq, and (3) "To" and "From" SIP URL values in a Session Identification Protocol (SIP) request, which allows remote attackers to avoid registering with the SIP registrar.

Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 2.0.1 leaks sensitive information during boot-up, which allows attackers to obtain the MD5 hash of the Admin password, MD5 hash of the physical password, and other registration information.

Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 1.2.7.4 does not "time out" an inactive administrator session, which could allow other users to perform administrator actions if the administrator does not explicitly end the authentication.

The web interface for Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 1.2.7.4 uses Base64 encoded usernames and passwords for HTTP basic authentication, which allows remote attackers to steal and easily decode the passwords via sniffing.

The web interface for Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 1.2.7.4 allows administrators to cause a denial of service by modifying the SIP_AUTHENTICATE_SCHEME value to force authentication of incoming calls, which does not notify the user when an authentication failure occurs.

The web interface for Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 1.2.7.4 allows authenticated users to modify the Call Forwarding settings and hijack calls.

Pingtel xpressa SIP-based voice-over-IP phone 1.2.5 through 1.2.7.4 has a default null administrator password, which could allow remote attackers to gain access to the phone.