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CVE Descriptions
Cisco IOS 11.2.x and 12.0.x does not limit the size of its redirect table, which allows remote attackers to cause a denial of service (memory consumption) via spoofed ICMP redirect packets to the router.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C | nvd@nist.gov |
EPSS
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EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Exploit information
Exploit Database EDB-ID : 21465
Publication date : 2002-05-20 22h00 +00:00
Author : FX
EDB Verified : Yes
source: https://www.securityfocus.com/bid/4786/info
IOS is the Internet Operating System, used on Cisco routers. It is distributed and maintained by Cisco.
It has been reported that it is possible to cause a denial of service in some Cisco routers by sending a large amount of spoofed ICMP redirect messages.
This vulnerability has been assigned Cisco bug ID CSCdx32056.
The following products are known to be affected:
Cisco 1005 running IOS 11.0(18)
Cisco 1603 running IOS 11.3(11b)
Cisco 1603 running IOS 12.0(3)
Cisco 2503 running IOS 11.0(22a)
Cisco 2503 running IOS 11.1(24a)
To generate random ICMP redirect messages, a sender tool is available
at http://www.phenoelit.de/irpas/icmp_redflod.c, which has to be
linked with the IRPAS packet library.
linuxbox# cd /where/irpas/is
linuxbox# make libpackets.a
linuxbox# gcc -o icmp_redflod -I. -L. icmp_redflod.c -lpackets
linuxbox# ./icmp_redflod -i eth0 -D <destination_ip> -G <fake_gateway>
On high bandwidth networks, the command line switch -w0 can be used to increase the sending rate.
Products Mentioned
Configuraton 0
Cisco>>Ios >> Version 11.0
- Cisco>>Ios >> Version 11.0 (Open CPE detail)
Cisco>>Ios >> Version 11.1
- Cisco>>Ios >> Version 11.1 (Open CPE detail)
Cisco>>Ios >> Version 11.3
- Cisco>>Ios >> Version 11.3 (Open CPE detail)
Cisco>>Ios >> Version 12.0
- Cisco>>Ios >> Version 12.0 (Open CPE detail)
