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[ GLSA 200411-21 ] Samba: Multiple vulnerabilities
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GLSA
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Joined: 13 Jun 2003
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Location: Barcelona, Spain

PostPosted: Thu Nov 11, 2004 9:40 pm    Post subject: [ GLSA 200411-21 ] Samba: Multiple vulnerabilities Reply with quote

Gentoo Linux Security Advisory

Title: Samba: Multiple vulnerabilities (GLSA 200411-21)
Severity: normal
Exploitable: remote
Date: November 11, 2004
Updated: November 15, 2004
Bug(s): #70429
ID: 200411-21

Synopsis

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).

Background

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

Affected Packages

Package: net-fs/samba
Vulnerable: < 3.0.8
Unaffected: >= 3.0.8
Unaffected: < 3.0
Architectures: All supported architectures


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


References

Samba Security Announcement
CAN-2004-0930
CAN-2004-0882
E-Matters Advisory 13/2004


Last edited by GLSA on Thu Mar 08, 2007 4:16 am; edited 3 times in total
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