New samba packages available to fix /tmp races
| Advisory: | RHSA-2001:044-08 |
|---|---|
| Type: | Security Advisory |
| Severity: | N/A |
| Issued on: | 2001-04-05 |
| Last updated on: | 2001-05-14 |
| Affected Products: | Red Hat Linux 6.2 Red Hat Linux 7.0 Red Hat Linux 7.1 |
| CVEs (cve.mitre.org): |
CVE-2001-0406 |
Details
New samba packages are available; these packages fix /tmp races
in smbclient and the printing code. By exploiting these vulnerabilities,
local users could overwrite any file in the system.
It is recommended that all samba users upgrade to the fixed packages.
Please note that the packages for Red Hat Linux 6.2 require an updated
logrotate package.
Note: these packages include the security patch from Samba-2.0.9.
The printing code in smbd uses predictable filenames in /tmp, and passes
them as an output file to system(); a user could create a symbolic
link in /tmp and then overwrite any file on the system; later on chmod(0666)
is called on the file, leading to even more problems.
The smbclient 'more' and 'mput' commands also used /tmp files insecurely;
this is less of a risk in that these are not normally run as root.
Thanks go to Marcus Meissner (mm@caldera.de) for investigating the issue
and to the Samba team for providing a patch.
Solution
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 directly *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.
Again, note that the packages for Red Hat Linux 6.2 requre an updated
logrotate package.
Updated packages
| Red Hat Linux 6.2 | |
| SRPMS: | |
| ftp://updates.redhat.com/rhn/repository/NULL/logrotate/3.5.2-0.6/SRPMS/logrotate-3.5.2-0.6.src.rpm Missing file |
MD5: 335f2123c5ce3606db471183dfcdebad |
| Alpha: | |
| ftp://updates.redhat.com/rhn/repository/NULL/logrotate/3.5.2-0.6/alpha/logrotate-3.5.2-0.6.alpha.rpm Missing file |
MD5: f0f9129497c91d12da04cd6219267aa3 |
| IA-32: | |
| ftp://updates.redhat.com/rhn/repository/NULL/logrotate/3.5.2-0.6/i386/logrotate-3.5.2-0.6.i386.rpm Missing file |
MD5: 33f4ce1b7967405f33f4ad1cb73fae35 |
| Sparc: | |
| ftp://updates.redhat.com/rhn/repository/NULL/logrotate/3.5.2-0.6/sparc/logrotate-3.5.2-0.6.sparc.rpm Missing file |
MD5: 3f14ee70fdb73ba09ef49e4c4f3c6a7f |
| Red Hat Linux 7.0 | |
| Alpha: | |
| {filename} | MD5: cbfae3f2420cfae17b005211a8fdf692 |
| IA-32: | |
| {filename} | MD5: a8ab5a701ae81d123b45e564e6a780d4 |
| Red Hat Linux 7.1 | |
| SRPMS: | |
| samba-2.0.8-1.7.1.src.rpm File outdated by: RHSA-2003:137 |
MD5: b5904f83880e46202a997c035a8ab7bf |
| IA-32: | |
| {filename} | MD5: 282c70feb595b651804678407b7d7b08 |
References
Keywords
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package
The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/
