19121 : SILC Server and Toolkit silcd.c Symlink Arbitrary File Overwrite
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	751	over 7 years ago	about 5 years ago	0 times	90%

Timeline

Disclosure Date
2005-09-01

Time to Exploit
93 days

Description

SILC Server and Toolkit contains a flaw that may allow a malicious local user to overwrite arbitrary files on the system. The issue is due to the program creating temporary files insecurely. It is possible for a user to use a symlink style attack to manipulate arbitrary files, resulting in a loss of integrity.

Classification

Location: Local Access Required
Attack Type: Race Condition
Impact: Loss of Integrity
Exploit: Exploit Public
Disclosure: Vendor Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Tavis Ormandy (Gentoo) has released an unofficial patch to address this vulnerability.

Products

SILC Project	SILC Server	1.0
	SILC Toolkit	1.0
		0.9.12-r3

References

Security Tracker: 1014844
Bugtraq ID: 14716
Secunia Advisory ID: 16659
CVE ID: 2005-2809 (see also: NVD)
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2005-09/0001.html
Other Solution URL: http://bugs.gentoo.org/attachment.cgi?id=61573
Vendor Specific News/Changelog Entry: http://bugs.gentoo.org/show_bug.cgi?id=94587
Vendor URL: http://silcnet.org/
Other Advisory URL: http://www.zataz.net/adviso/silc-server-toolkit-06152005.txt

Credit

Eric Romang - eromangzataz.net - ZATAZ Audit

CVSSv2 Score

CVSSv2 Base Score = 2.1
Source: nvd.nist.gov | Generated: 2005-09-07 | Disagree?

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