Denial of Service Vulnerability in Cisco Devices Running Classic IOS

vendor:

Classic IOS

by:

SecurityFocus

7,5

CVSS

HIGH

Denial of Service

400

CWE

Product Name: Classic IOS

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: No

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Cisco routers in the AGS/MGS/CGS/AGS+, IGS, RSM, 8xx, ubr9xx, 1xxx, 25xx, 26xx, 30xx, 36xx, 38xx, 40xx, 45xx, 47xx, AS52xx, AS53xx, AS58xx, 64xx, 70xx, 72xx (including the ubr72xx), 75xx, and 12xxx series, Recent versions of LS1010 ATM switch, Catalyst 2900XL LAN switch, Cisco DitributedDirector.

2002

Denial of Service Vulnerability in Cisco Devices Running Classic IOS

Cisco devices running classic IOS are reported prone to a denial of service vulnerability. The issue occurs when a vulnerable device receives and processes a UDP packet on UDP port 514 for syslog. This issue results in a crash or hang requiring a reboot.

Mitigation:

Disable UDP port 514 on the Cisco device or use a firewall to block incoming traffic to the port.

Source

Exploit-DB raw data:

source: https://www.securityfocus.com/bid/675/info

Cisco devices running classic IOS are reported prone to a denial of service vulnerability. The issue occurs when a vulnerable device receives and processes a UDP packet on UDP port 514 for syslog. This issue results in a crash or hang requiring a reboot.

Vulnerable IOS software may be found on the following Cisco devices:

- Cisco routers in the AGS/MGS/CGS/AGS+, IGS, RSM, 8xx, ubr9xx, 1xxx, 25xx, 26xx, 30xx, 36xx, 38xx, 40xx, 45xx, 47xx, AS52xx, AS53xx, AS58xx, 64xx, 70xx, 72xx (including the ubr72xx), 75xx, and 12xxx series.
-Recent versions of LS1010 ATM switch.
-Catalyst 2900XL LAN switch.
-Cisco DitributedDirector. 

nmap -sU -p514 <IP-of-Cisco-device>