5029 : Cisco IOS SSH Large Packet CPU Consumption DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
5	1110	about 9 years ago	almost 4 years ago	2 times	90%

Timeline

Disclosure Date
2002-06-27

Description

Cisco IOS contains a flaw that may allow a remote resource consumption denial of service. The issue is triggered when a device running SSH is sent a large packet designed to exploit the SSH CRC32 vulnerability in which attackers can execute arbitrary commands using an integer overflow, and will result in loss of availability for the platform.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service, Input Manipulation
Impact: Loss of Availability
Exploit: Exploit Public

Solution

Follow the instructions in the Vendor Specific Solution URL to determine the proper upgrade for the device, as this has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround(s): disable the SSH service on the device

Products

Cisco Systems, Inc.	Cisco IOS	12.0S
		12.0SP
		12.0ST
		12.0XB
		12.0XM
		12.0XV
		12.1
		12.1E
		12.1EC
		12.1(1)EX
		12.1(5c)EX
		12.1(8a)EX
		12.1(9)EX
		12.1T
		12.1XB
		12.1XC
		12.1XF
		12.1XG
		12.1XH
		12.1XI
		12.1XJ
		12.1XL
		12.1XM
		12.1XP
		12.1XQ
		12.1XT
		12.1XU
		12.1YB
		12.1YC
		12.1YD
		12.1YE
		12.1YF
		12.1YI
		12.2
		12.2B
		12.2BC
		12.2DA
		12.2DD
		12.2S
		12.2T
		12.2XA
		12.2XB
		12.2XD
		12.2XE
		12.2XF
		12.2XG
		12.2XH
		12.2XI
		12.2XJ
		12.2XK
		12.2XL
		12.2XM
		12.2XN
		12.2XQ
		12.2XR
		12.2XS
		12.2XT
		12.2YA
		12.2YB
		12.2YC
		12.2YD
		12.2YF
		12.2YG
		12.2YH

References

CVE ID: 2002-1024 (see also: NVD)
CERT VU: 290140
Bugtraq ID: 5114
Related OSVDB ID: 795
ISS X-Force ID: 9437
Vendor Specific Advisory URL: http://www.cisco.com/warp/public/707/SSH-scanning.shtml
Vendor Specific Solution URL: http://www.cisco.com/warp/public/707/SSH-scanning.shtml#Software
Generic Exploit URL: http://www1.corest.com/common/showdoc.php?idxseccion=10&idx=81

Tools & Filters

	10607 11381 11382

Credit

Cisco Product Security Incident Response Team (PSIRT) - psirtcisco.com - Cisco Systems, Inc.

CVSSv2 Score

CVSSv2 Base Score = 7.1
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

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