Cisco Plugs VoIP Malware Loophole
Cisco rushed out a brace of security on Thursday to defend against potentially dangerous exploits via its VoIP kit, including the possibility of malicious code being injected into vulnerable networks.
The twin advisories from the network giant cover a range of vulnerabilities in Cisco IP Phones and its Unified Communications Manager (UCM) call management software.
A range of Cisco 7900 Series IP Phones are subject to multiple flaws, some of which may lend themselves to attacks involving the execution of arbitrary code on a vulnerable phone. Malicious DNS responses, a bug on the phone’s SSH server and flaws in the handling of MIME on SIP messages all create buffer overflow risks. Other bugs create a means to crash vulnerable phones.
The bugs affect ranges of Cisco Unified IP Phone devices running both SIP firmware and SCCP firmware.
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