27745 : Apple Mac OS X OpenSSH Nonexistent Account Login Enumeration DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	1038	almost 7 years ago	about 5 years ago	0 times	90%

Timeline

Disclosure Date
2006-07-14

Description

Mac OS X contains a flaw that may allow a remote denial of service. The issue is triggered when an attacker attempts to log in multiple times using a nonexistent account, which causes the process to hang, and will result in loss of availability for the service. This vulnerability could also be leveraged by an attacker to enumerate valid user accounts, resulting in a loss of confidentiality.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service, Information Disclosure
Impact: Loss of Confidentiality, Loss of Availability
Exploit: Exploit Public

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Apple has released a patch (Security Update 2006-004) to address this vulnerability.

Products

Apple Inc.	Mac OS X	10.4
		10.4.1
		10.4.2
		10.4.3
		10.4.4
		10.4.5
		10.4.6
		10.4.7

References

Security Tracker: 1016672
Bugtraq ID: 19289
CVE ID: 2006-0393 (see also: NVD)
Secunia Advisory ID: 21253
Related OSVDB ID: 27730 27731 27732 27733 27734 27735 27736 27737 27738 27739 27740 27741 27742 27743 27744 27746
ISS X-Force ID: 28147
VUPEN Advisory: ADV-2006-3101
Vendor Specific Advisory URL: http://docs.info.apple.com/article.html?artnum=304063

Tools & Filters

	22125

Credit

Rob Middleton - Centenary Institute

CVSSv2 Score

CVSSv2 Base Score = 4.0
Source: nvd.nist.gov | Generated: 2006-08-04 | Disagree?

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