Share your story
The central voice for Linux and Open Source security news
Home News Topics Advisories HOWTOs Features Newsletters About Register

Sign up!
EnGarde Community
What is the most important Linux security technology?
Linux Events
Linux User Groups
Link to Us
Security Center
Book Reviews
Security Dictionary
Security Tips
White Papers
Featured Blogs
All About Linux
DanWalsh LiveJournal
Latest Newsletters
Linux Advisory Watch: February 27th, 2015
Linux Security Week: February 23rd, 2015
LinuxSecurity Newsletters
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

Red Hat: cvs Denial of service vulnerabilities Print E-mail
User Rating:      How can I rate this item?
Posted by Team   
RedHat Linux Updated cvs packages that fix remote denial of service vulnerabilities are now available. (This is a legacy Red Hat fix, released by the Fedora Project).

Fedora Legacy Update Advisory

Synopsis:          Updated cvs resolves security vulnerability
Advisory ID:       FLSA:1620
Issue date:        2004-06-02
Product:           Red Hat Linux
Keywords:          Security
Cross references:
CVE Names:         CAN-2004-0180 CAN-2004-0396 CAN-2004-0405
- -----------------------------------------------------------------------

- ---------------------------------------------------------------------
1. Topic:

Updated cvs packages that fix remote denial of service vulnerabilities are 
now available.

2. Relevent releases/architectures:

Red Hat Linux 7.3 - i386
Red Hat Linux 9   - i386

3. Problem description:

Sebastian Krahmer discovered a flaw in CVS clients where rcs diff files can 
create files with absolute pathnames An attacker could create a fake 
malicious CVS server that would cause arbitrary files to be created or 
overwritten when a victim connects to it. The Common Vulnerabilities and 
Exposures project ( has assigned the name CAN-2004-0180 to 
this issue.  (Note: Red Hat Linux 9 was already patched for this issue)

Derek Price discovered a vulnerability whereby a CVS pserver could be 
abused by a malicious client to view the contents of certain files outside 
of the CVS root directory using relative pathnames containing "../". The 
Common Vulnerabilities and Exposures project ( has assigned 
the name CAN-2004-0405 to this issue. (Note: Red Hat Linux 9 was already 
patched for this issue)

Stefan Esser discovered a flaw in cvs where malformed "Entry" lines could 
cause a heap overflow. An attacker who has access to a CVS server could 
use this flaw to execute arbitrary code under the UID which the CVS server 
is executing. The Common Vulnerabilities and Exposures project 
( has assigned the name CAN-2004-0396 to this issue.

Users of CVS are advised to upgrade to these erratum packages, which 
contain a patch correcting this issue.

Fedora Legacy would like to thank David M. Kaplan for bringing these issues 
to our attention.

4. Solution:

Before applying this update, make sure all previously released errata 
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those 
RPMs which are currently installed will be updated.  Those RPMs which are 
not installed but included in the list will not be updated.  Note that you 
can also use wildcards (*.rpm) if your current directory *only* contains 
the desired RPMs.

Please note that this update is also available via yum and apt.  Many 
people find this an easier way to apply updates.  To use yum issue:

yum update

or to use apt:

apt-get update; apt-get upgrade

This will start an interactive process that will result in the appropriate 
RPMs being upgraded on your system.  This assumes that you have yum or 
apt-get configured for obtaining Fedora Legacy content. Please visit  
http://www for directions on how to configure yum 
and apt-get.

5. Bug IDs fixed: - 1620 - Security problems found with CVS that 
need to be fixed.

6. RPMs required:

Red Hat Linux 7.3:



Red Hat Linux 9:



7. Verification:

SHA1 sum                                 Package Name
- ---------------------------------------------------------------------------



These packages are GPG signed by Fedora Legacy for security.  Our key is 
available from  http://www.fedoralegacy org/about/security.php

You can verify each package with the following command:

    rpm --checksig -v 

If you only wish to verify that each package has not been corrupted or 
tampered with, examine only the sha1sum with the following command:


8. References:

9. Contact:

The Fedora Legacy security contact is <>. More 
project details at

< Prev   Next >


Latest Features
Peter Smith Releases Linux Network Security Online
Securing a Linux Web Server
Password guessing with Medusa 2.0
Password guessing as an attack vector
Squid and Digest Authentication
Squid and Basic Authentication
Demystifying the Chinese Hacking Industry: Earning 6 Million a Night
Free Online security course (LearnSIA) - A Call for Help
What You Need to Know About Linux Rootkits
Review: A Practical Guide to Fedora and Red Hat Enterprise Linux - Fifth Edition
Yesterday's Edition
DDoS Exploit Targets Open Source Rejetto HFS
Gemalto Confirms It Was Hacked But Insists the NSA Didnít Get Its Crypto Keys
Hackers exploit router flaws in unusual pharming attack
Partner Sponsor

Community | HOWTOs | Blogs | Features | Book Reviews | Networking
 Security Projects |  Latest News |  Newsletters |  SELinux |  Privacy |  Home
 Hardening |   About Us |   Advertise |   Legal Notice |   RSS |   Guardian Digital
(c)Copyright 2015 Guardian Digital, Inc. All rights reserved.