Cisco announces network security risk

Cisco Systems said that routers and other devices running new versions of its IOS are vulnerable to a buffer overflow. The firewall authentication proxy for FTP and Telnet sessions featured in versions 12.2 through 12.4 are at risk. Cisco has urged users to upgrade or switch to alternate versions of its software. The news has met with lots of criticism. Cisco recently tried to silence a researcher at the Black Hat conference who gave a speech detailing concerns about vulnerabilities in Cisco's IOS source code.

For more on the latest Cisco security controversy:
- go to this piece at Top Tech News

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