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ICMP Unreachable Vulnerability in Cisco 12000 Series Internet Router - Cisco Systems

medium Nessus Plugin ID 48960

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

The performance of Cisco 12000 series routers can be degraded when they have to send a large number of ICMP unreachable packets. This situation usually can occur during heavy network scanning. This vulnerability is tracked by three different bug IDs: CSCdr46528 ( registered customers only) , CSCdt66560 ( registered customers only) , and CSCds36541 ( registered customers only) . Each bug ID is assigned to a different Engine the line card is based upon.
The rest of the Cisco routers and switches are not affected by this vulnerability. It is specific for Cisco 12000 Series.
No other Cisco product is vulnerable.
The workaround is to either prevent the router from sending unreachable Internet Control Message Protocol (ICMPs) at all or to rate limit them.

Solution

Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20011114-gsr-unreachable.

See Also

http://www.nessus.org/u?a091c44c

http://www.nessus.org/u?61ae55cf

Plugin Details

Severity: Medium

ID: 48960

File Name: cisco-sa-20011114-gsr-unreachablehttp.nasl

Version: 1.15

Type: local

Family: CISCO

Published: 9/1/2010

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2001

Vulnerability Publication Date: 11/14/2001

Reference Information

CVE: CVE-2001-0861

BID: 3534