Red Hat Security Advisory
| Synopsis: | New rsync packages fix remote security vulnerability |
| Advisory ID: | RHSA-2003:398-01 |
| Issue date: | 2003-12-04 |
| Updated on: | 2003-12-04 |
| Product: | Red Hat Linux |
| Keywords: | rsync heap overflow |
| Cross references: | |
| Obsoletes: | |
| CVE Names: | CAN-2003-0962 |
1. Topic:
Updated rsync packages are now available that fix a heap
overflow in the Rsync server.
2. Relevant releases/architectures:
Red Hat Linux 7.1 – i386
Red Hat Linux 7.2 – i386, ia64
Red Hat Linux 7.3 – i386
Red Hat Linux 8.0 – i386
Red Hat Linux 9 – i386
3. Problem description:
rsync is a program for sychronizing files over the network.
A heap overflow bug exists in rsync versions prior to 2.5.7. On
machines where the rsync server has been enabled, a remote attacker
could use this flaw to execute arbitrary code as an unprivileged
user. The Common Vulnerabilities and Exposures project (cve.mitre.org/) has assigned the name
CAN-2003-0962 to this issue.
All users should upgrade to these erratum packages containing
version 2.5.7 of rsync, which is not vulnerable to this issue.
NOTE: The rsync server is disabled (off) by default in Red Hat
Linux. To check if the rsync server has been enabled (on), run the
following command:
/sbin/chkconfig –list rsync
If the rsync server has been enabled but is not required, it can
be disabled by running the following command as root:
/sbin/chkconfig rsync off
Red Hat would like to thank the rsync team for their rapid
response and quick fix for this issue.
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 Red Hat
Network. Many people find this an easier way to apply updates. To
use Red Hat Network, launch the Red Hat Update Agent with the
following command:
up2date
This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system.
If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the up2date
client with an updated certificate. The latest version of up2date
is available from the Red Hat FTP site and may also be downloaded
directly from the RHN website:
https://rhn.redhat.com/help/latest-up2date.px
5. RPMs required:
Red Hat Linux 7.1:
SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm
i386:
ftp://updates.redhat.com/7.1/en/os/i386/rsync-2.5.7-0.7.i386.rpm
Red Hat Linux 7.2:
SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm
i386:
ftp://updates.redhat.com/7.2/en/os/i386/rsync-2.5.7-0.7.i386.rpm
ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/rsync-2.5.7-0.7.ia64.rpm
Red Hat Linux 7.3:
SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm
i386:
ftp://updates.redhat.com/7.3/en/os/i386/rsync-2.5.7-0.7.i386.rpm
Red Hat Linux 8.0:
SRPMS:
ftp://updates.redhat.com/8.0/en/os/SRPMS/rsync-2.5.7-0.8.src.rpm
i386:
ftp://updates.redhat.com/8.0/en/os/i386/rsync-2.5.7-0.8.i386.rpm
Red Hat Linux 9:
SRPMS:
ftp://updates.redhat.com/9/en/os/SRPMS/rsync-2.5.7-0.9.src.rpm
i386:
ftp://updates.redhat.com/9/en/os/i386/rsync-2.5.7-0.9.i386.rpm
6. Verification:
MD5 sum Package Name
e1981db86eac2625edbd24cd41120810
7.1/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm
19c87db1c5794f30e60ee5927d959e87
7.1/en/os/i386/rsync-2.5.7-0.7.i386.rpm
e1981db86eac2625edbd24cd41120810
7.2/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm
19c87db1c5794f30e60ee5927d959e87
7.2/en/os/i386/rsync-2.5.7-0.7.i386.rpm
0cc8dbd351e0e5369eb6de006d20271c
7.2/en/os/ia64/rsync-2.5.7-0.7.ia64.rpm
e1981db86eac2625edbd24cd41120810
7.3/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm
19c87db1c5794f30e60ee5927d959e87
7.3/en/os/i386/rsync-2.5.7-0.7.i386.rpm
a2f512f5b2859f811a0380a6390c4337
8.0/en/os/SRPMS/rsync-2.5.7-0.8.src.rpm
cbcb9807c753ada532ee56930b82a17f
8.0/en/os/i386/rsync-2.5.7-0.8.i386.rpm
fe8e0bb67b3870b9773ced0e61b70621
9/en/os/SRPMS/rsync-2.5.7-0.9.src.rpm
cc8b37db1518aa08b20b0ede31146a2e
9/en/os/i386/rsync-2.5.7-0.9.i386.rpm
These packages are GPG signed by Red Hat for security. Our key
is available from https://www.redhat.com/security/keys.html
You can verify each package with the following command:
rpm –checksig -v <filename>
If you only wish to verify that each package has not been
corrupted or tampered with, examine only the md5sum with the
following command:
md5sum <filename>
7. References:
http://rsync.samba.org/
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0962
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More
contact details at https://www.redhat.com/solutions/security/news/contact.html
Copyright 2003 Red Hat, Inc.