20758 : NetBSD SO_LINGER Socket Option Negative Value Local DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	611	over 7 years ago	about 5 years ago	0 times	90%

Timeline

Disclosure Date
2005-11-01

Description

NetBSD contains a flaw that may allow a local denial of service. The issue is triggered when a malicious user passes a negative value for linger time through the SO_LINGER socket option, and will result in loss of availability for the platform.

Classification

Location: Local Access Required
Attack Type: Denial of Service, Input Manipulation
Impact: Loss of Availability
Exploit: Exploit Public

Solution

Upgrade to version 2.1 after the correction date or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround: remove "options DIAGNOSTIC" from the kernel configuration file and recompile.

Products

NetBSD Foundation, Inc.	NetBSD	2.0
		2.0.1
		2.0.2
		2.0.3
		2.1

References

Bugtraq ID: 15289
CVE ID: 2005-4782 (see also: NVD)
Vendor Specific Advisory URL: ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-012.txt.asc

Credit

Nathan J. Williams -

CVSSv2 Score

CVSSv2 Base Score = 4.9
Source: nvd.nist.gov | Generated: 2006-04-28 | Disagree?

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