voip overVoip servicesCisco Systems has disclosed that a core component of its enterprise VOIP system is vulnerable to several serious security flaws. The flaws could allow remote attackers to compromise a company's VOIP network, redirect or listen in on calls and carry out other nastiness, according to Cisco and Internet Security Systems (ISS), which discovered the flaws. While the bugs voice over ip VoIP Main Page voip haven't yet been exploited, they represent one of the most high-profile security scares in enterprise IP telephony to date. Enterprises are moving quickly to shift to IP-based telephone networks, with Gartner predicting that by 2007, 97 percent How voipof new enterprise phone systems installed in North America will be either VOIP or hybrid. Cisco leads the market VoIP Main Page at the moment internet over protocol voice voip by a wide margin, with a 42 percent share in North America, followed by Avaya with 14 percent, 3Com with 11 percent and Nortel with 9 percent, according to Gartner's research. Cisco reported five separate security bugs in CallManager, the call- processing component of the Cisco IP telephony system. VoIP Main Page The most serious is in the aupair.exe service, which could voip voice over allow a remote attacker to Voip faxcause a buffer overflow and execute malicious code. Aupair.exe can't be disabled for normal CallManager use, Cisco said. CallManager is vulnerable in its default configuration, and an attack could be carried out without the VoIP Main Page need for prior authentication, ISS said. An attacker may be able to redirect calls or perform eavesdropping as a result voip over wireless of this compromise. Successful exploitation of this vulnerability could be used to gain unauthorized access to networks and VoIP Main Page machines with Cisco VOIP products, the security firm said in an advisory. Cisco has released patches for the affected versions of CallManager, including 3.3 and earlier, 4.0 and 4.1. Its advisory Voip reviewand patching instructions are on Cisco's Web site. Voip servicesCisco Systems has disclosed that a core component of its enterprise VOIP system is vulnerable to several serious security flaws. The flaws could allow remote attackers to compromise a company's VOIP network, redirect or listen in on calls and carry out other nastiness, according to Cisco and Internet Security Systems (ISS), which discovered the flaws. While the bugs voice over ip VoIP Main Page voip haven't yet been exploited, they represent one of the most high-profile security scares in enterprise IP telephony to date. Enterprises are moving quickly to shift to IP-based telephone networks, with Gartner predicting that by 2007, 97 percent How voipof new enterprise phone systems installed in North America will be either VOIP or hybrid. Cisco leads the market VoIP Main Page at the moment internet over protocol voice voip by a wide margin, with a 42 percent share in North America, followed by Avaya with 14 percent, 3Com with 11 percent and Nortel with 9 percent, according to Gartner's research. Cisco reported five separate security bugs in CallManager, the call- processing component of the Cisco IP telephony system. VoIP Main Page The most serious is in the aupair.exe service, which could voip voice over allow a remote attacker to Voip faxcause a buffer overflow and execute malicious code. Aupair.exe can't be disabled for normal CallManager use, Cisco said. CallManager is vulnerable in its default configuration, and an attack could be carried out without the VoIP Main Page need for prior authentication, ISS said. An attacker may be able to redirect calls or perform eavesdropping as a result voip over wireless of this compromise. Successful exploitation of this vulnerability could be used to gain unauthorized access to networks and VoIP Main Page machines with Cisco VOIP products, the security firm said in an advisory. Cisco has released patches for the affected versions of CallManager, including 3.3 and earlier, 4.0 and 4.1. Its advisory Voip reviewand patching instructions are on Cisco's Web site. |
