Overview
Samba handles temporary files insecurely, allowing arbitrary files to be overwritten and left in a state that would permit later modification.
Description
Samba is an implementation of the Server Message Block (SMB) protocol. Some versions of samba handle temporary files in an insecure manner that may allow local users to cause arbitrary files and devices to be overwritten. Due to easily predictable printer queue cache file names, local users may create symbolic links to any file or device causing it to be corrupted when a remote user accesses a printer. In addition, the file will be left with world-writable permissions, allowing any user to enter their own data. |
Impact
By modifying arbitrary files, an attacker may gain elevated priveleges. By corrupting files or devices, an attacker may cause denial of service. |
Solution
Apply vendor patches; see the Systems Affected section below. |
Deinstall the Samba package. |
Vendor Information
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | ||
| Temporal | ||
| Environmental |
References
- http://www.securityfocus.com/bid/2617
- ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:36.samba.asc
- http://www.linuxsecurity.com/advisories/freebsd_advisory-1314.html
- http://www.redhat.com/support/errata/RHSA-2001-086.html
- http://www.linuxsecurity.com/advisories/redhat_advisory-1369.html
- http://www.linuxsecurity.com/advisories/mandrake_advisory-1319.html
- http://www.linuxsecurity.com/advisories/other_advisory-1307.html
- http://www.linuxsecurity.com/advisories/other_advisory-1362.html
- http://www.linuxsecurity.com/advisories/debian_advisory-1302.html
- http://www.linuxsecurity.com/advisories/other_advisory-1305.html
- http://www.linuxsecurity.com/advisories/other_advisory-1298.html
- http://www.caldera.com/support/security/advisories/CSSA-2001-015.0.txt
Acknowledgements
This vulnerability was first reported by Marcus Meissner of Caldera.
This document was last modified by Tim Shimeall.
Other Information
| CVE IDs: | CVE-2001-0406 |
| Severity Metric: | 13.36 |
| Date Public: | 2001-04-23 |
| Date First Published: | 2001-09-17 |
| Date Last Updated: | 2001-09-17 19:24 UTC |
| Document Revision: | 7 |