Samba: Multiple vulnerabilities — GLSA 200411-21

Samba is vulnerable to a buffer overflow that could lead to execution of arbitrary code (CAN-2004-0882). Another flaw in Samba may allow a remote attacker to cause a Denial of Service by excessive consumption of CPU cycles (CAN-2004-0930).

Affected Packages

net-fs/samba on all architectures
Affected versions < 3.0.8
Unaffected versions >= 3.0.8, < 3.0

Background

Samba is a freely available SMB/CIFS implementation which allows seamless interoperability of file and print services to other SMB/CIFS clients.

Description

Samba fails to do proper bounds checking when handling TRANSACT2_QFILEPATHINFO replies. Additionally an input validation flaw exists in ms_fnmatch.c when matching filenames that contain wildcards.

Impact

An attacker may be able to execute arbitrary code with the permissions of the user running Samba. A remote attacker may also be able to cause an abnormal consumption of CPU resources, resulting in slower performance of the server or even a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All Samba users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-fs/samba-3.0.8"

References

Release Date
November 11, 2004

Latest Revision
November 15, 2004: 02

Severity
normal

Exploitable
remote

Bugzilla entries