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02 Apr 2002
Cisco is warning customers that a flaw in one of its computer telephony products could be exploited to allow a denial of service (DoS) attack.
The vulnerability in its CallManager software can result in a memory leak in the computer telephony framework causing the server to crash, which could be used by a hacker to start a DoS attack.
Further reading
The bug is thought only to affect versions 3.0 and 3.1.
Cisco said in a statement that the fault is most commonly seen when CallManager systems are integrated with a directory such as Active Directory or Netscape.
The most common cause is when the CTI framework is not configured with a valid password in the directory.
Cisco is offering a free software upgrade to fix the fault at its website here. The advisory is available here.
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