6834 : CVS serve_notify Overflow Command Execution
Printer | http://osvdb.org/6834 | Email This | Edit Vulnerability

Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
8	1353	almost 9 years ago	about 5 years ago	0 times	90%

Timeline

Disclosure Date
2004-06-09

Description

A remote overflow exists in Concurrent Versions System. The CVS fails to handle an empty data line input resulting in a potential single byte overflow. With a specially crafted request, an attacker can cause the execution of the supplied code resulting in a loss of confidentiality, integrity, and/or availability. Since the CVS system is used to version control source code, these flaws put the source code in the repository at risk of being changed. This could lead to future exploits of any software that was checked into the system. These problems were discovered after a system compromise. The subsequent CVS code audit discovered several issues. This should be considered a critical issue and any source code located on public CVS servers should be verified to be correct.

Classification

Location: Local Access Required, Remote / Network Access
Attack Type: Denial of Service, Input Manipulation, Other
Impact: Loss of Confidentiality, Loss of Integrity, Loss of Availability
Exploit: Exploit Public

Solution

Upgrade to version 1.11.17 Stable, 1.12.9 Devel or higher, as it has been reported to fix this vulnerability. Further, additional steps can be taken to help secure a CVS server.

Products

CVS	CVS Feature Release	1.12.8
CVS	CVS Stable Release	1.11.16

References

Secunia Advisory ID: 11817 11818 11820 11822 11826 11829 11834 11842 11850 11853 12598 17389
ISS X-Force ID: 16372
CVE ID: 2004-0418 (see also: NVD)
Related OSVDB ID: 6830 6831 6832 6833 6835 6836
Keyword: Concurrent Versions System
Other Advisory URL: ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:14.cvs.asc ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-004.txt.asc http://security.e-matters.de/advisories/092004.html
http://www.suse.de/de/security/2004_15_cvs.html
Vendor Specific Advisory URL: ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-006.txt.asc http://www.debian.org/security/2004/dsa-517
http://www.mandrakesoft.com/security/advisories?name=MDKSA-2004:058
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2004&m=slackware-security.427370
https://ccvs.cvshome.org/servlets/ProjectNewsList
Mail List Post: http://archives.neohapsis.com/archives/fulldisclosure/2004-06/0215.html
Vendor Specific Solution URL: http://www.gentoo.org/security/en/glsa/glsa-200406-06.xml
Other Solution URL: http://www.netsys.com/library/papers/chrooted-ssh-cvs-server.txt
CIAC Advisory: o-156
RedHat RHSA: RHSA-2004:233-07

Tools & Filters

	12265 12500 13723 13724 13831 14157 14517 14812 15356 18779

Credit

Stefan Esser - sefreebsd.org -
Sebastian Krahmer - krahmersuse.de - SuSE
Derek Robert Price -

CVSSv2 Score

CVSSv2 Base Score = 10.0
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Comments

Add Comment Hide Add Comment

No Comments.

The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.