2715 : WU-FTPD S/KEY Authentication ftpd.c skey_challenge Function Remote Overflow
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
2	301	over 8 years ago	over 3 years ago	0 times	90%

Timeline

Disclosure Date
2000-06-07

Description

A remote overflow exists in WU-FTPD if S/KEY support is enabled. The skey_challenge function in ftpd.c fails to perform bounds checking on the name variable resulting in a buffer overflow. With a specially crafted request, a remote attacker can execute arbitrary code.

Classification

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

Solution

Upgrade to version 2.6.2-13 (Available on some Linux distributions) or higher, as it has been reported to fix this vulnerability. In addition, WU-FTPD Development Group has released a patch for some older versions of the main distribution.

Products

WU-FTPD Development Group	wu-ftpd	2.5.0
		2.6.0
		2.6.1
		2.6.2

References

Secunia Advisory ID: 10077 11350
ISS X-Force ID: 13518
CVE ID: 2004-0185 (see also: NVD)
Bugtraq ID: 8893
Vendor Specific Solution URL: ftp://ftp.wu-ftpd.org/pub/wu-ftpd/patches/apply_to_2.6.2/skeychallenge.patch
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/2000-06/0040.html
Other Advisory URL: http://packetstormsecurity.org/0310-advisories/wuftpd-skey.txt
http://www.debian.org/security/2004/dsa-457
http://www.fedoralegacy.org/updates/RH7.3/2004-07-19-FLSA_2004_1553__Updated_sysklogd_resolves_memory_buffer_bug.html
http://www4.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTU01012
CIAC Advisory: o-119
RedHat RHSA: RHSA-2004:096

Tools & Filters

	1208
	12475 14372 15294

Credit

Michal Zalewski - lcamtufcoredump.cx -
Michael Hendrickx - michaelscanit.be - scanit

CVSSv2 Score

We currently have no CVSS2 data on this vulnerability. Feel free to suggest it.

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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