Summary: These vulnerabilities affect: Many devices running Cisco IOS How an attacker exploits them: Multiple vectors of attack; including sending specially crafted network packets Impact: In the most common case, an attacker can cause your IOS device to reload, and can repeatedly exploit these flaws to cause a Denial of Service (DoS) condition What to do: Administrators … [Read more...]
Potential Zero Day Cisco IOS DoS Vulnerabilities
According to posts on the Bugtraq mailing list [ 1 / 2 ], Cisco's popular router and switch operating system -- IOS -- suffers from two zero day Denial of Service (DoS) vulnerabilities. These advisories come from the penetration test team Of NCNIPC (China). The advisories share minimal technical details about the two supposed flaws. They do say, attackers can trigger one DoS … [Read more...]
Cisco Biannual Patch Day: IOS Teeming with DoS Vulnerabilities
Summary: These vulnerabilities affect: Many devices running Cisco IOS How an attacker exploits them: Multiple vectors of attack; in the most common, the attacker sends specially crafted network packets Impact: An attacker can cause your IOS device to reload and can repeatedly exploit these flaws to cause a Denial of Service (DoS) situation What to do: … [Read more...]
Cisco Biannual Patch Day: Seven DoS Advisories Primarily Affect IOS
Summary: These vulnerabilities affect: Devices running Cisco IOS and Cisco UCM How an attacker exploits them: Multiple vectors of attack; in the most common, the attacker sends specially crafted network packets Impact: Various Denial of Service (DoS) issues, can force a Cisco device to crash, reload, or halt. One may also allow an attacker to execute code What to do: … [Read more...]