6455 : Cisco IOS OSPF Neighbor Announcement Remote Overflow
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
2	141	over 5 years ago	about 1 year ago	1 times	100%

Timeline

Disclosure Date	Exploit Publish Date
2003-02-20	2003-02-20

Keywords

CSCdp58462

Description

A remote overflow exists in Cisco IOS. The operating system fails to gracefully handle more than 255 Open Shortest Path First (OSPF) neighbors on an interface, resulting in a buffer overflow. With a specially crafted request, an attacker can cause denial of service, command execution, or manipulate the router's configuration, resulting in a loss of integrity and/or availability.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service, Input Manipulation
Impact: Loss of Integrity, Loss of Availability
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Technical

Cisco IOS versions in the 11.x code train, 12.0.x code train up until 12.0(18), and 12.1(0) code train contain a buffer overflow in their handling of OSPF neighbor annoucements. If more than 255 OSPF neighbors attempt to connect to a router through a single interface, an IO memory structure (small buffer header) is overflowed. This allows remote attackers to cause a denial of service, and possibly to execute commands or change the configuration of the router.

Solution

Upgrade to version 12.0(19)S, 12.0(19)ST, 12.1(1), 12.1(1)DB, 12.1(1)DC, 12.1(1)T or higher, as this has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Cisco Systems, Inc.	IOS	12.0(1)
		12.0(2)
		12.0(3)
		12.0(4)
		12.0(5)
		12.0(6)
		12.0(7)
		12.0(8)
		12.0(9)
		12.0(10)
		12.0(11)
		12.0(12)
		12.0(13)
		12.0(14)
		12.0(15)
		12.0(16)
		12.0(17)
		12.0(18)
		11.x
		12.1(0)
		12.1(0)DB
		12.1(0)DC
		12.1(0)T

References

ISS X-Force ID: 11373
CVE ID: 2003-0100 (see also: NVD)
Bugtraq ID: 6895
Secunia Advisory ID: 8130
CERT VU: 959203
Keyword: Cisco Bug ID CSCdp58462
Mail List Post: http://marc.theaimsgroup.com/?l=bugtraq&m=104576100719090&w=2
http://marc.theaimsgroup.com/?l=bugtraq&m=104587206702715&w=2
Vendor URL: http://www.cisco.com

Tools & Filters

	11283
	2201 2202 2203

Credit

FX - fxphenoelit.de - Phenoelit Group

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Blogs

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