1099 : Cisco IOS CHAP Authentication Bypass
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
12	573	over 9 years ago	over 4 years ago	0 times	65%

Timeline

Discovery Date	Disclosure Date
1997-10-01	1997-10-01

Description

IOS and IOS/700 contain a flaw that may allow a malicious user to establish unauthorized connections. The issue is triggered when an attacker exploits a flaw in IOS to bypass CHAP authentication. It is possible that the flaw may allow arbitrary PPP connections resulting in unauthorized network traffic.

Classification

Unknown or Incomplete

Solution

Upgrade to version indicated by Cisco product matrix, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Cisco Systems, Inc.	IOS	10.3
		11.0
		11.1
		11.2
		9.1
	IOS/700	4.1(1)

References

CVE ID: 1999-0160 (see also: NVD)
ISS X-Force ID: 570
Bugtraq ID: 693
Vendor Specific Advisory URL: http://www.cisco.com/warp/public/770/chapvuln-pub.shtml
Other Advisory URL: http://www.securityfocus.com/advisories/1423
CIAC Advisory: i-002a

Credit

Unknown or Incomplete

CVSSv2 Score

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

Blogs

This product uses the Daylife API but is not endorsed or certified by Daylife.

This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.

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