GLSA-200407-21 : Samba: Multiple buffer overflows

Critical Nessus Plugin ID 14554


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-200407-21 (Samba: Multiple buffer overflows)

Evgeny Demidov found a buffer overflow in SWAT, located in the base64 data decoder used to handle HTTP basic authentication (CAN-2004-0600). The same flaw is present in the code used to handle the sambaMungedDial attribute value, when using the ldapsam passdb backend. Another buffer overflow was found in the code used to support the 'mangling method = hash' smb.conf option (CAN-2004-0686). Note that the default Samba value for this option is 'mangling method = hash2' which is not vulnerable.
Impact :

The SWAT authentication overflow could be exploited to execute arbitrary code with the rights of the Samba daemon process. The overflow in the sambaMungedDial handling code is not thought to be exploitable. The buffer overflow in 'mangling method = hash' code could also be used to execute arbitrary code on vulnerable configurations.
Workaround :

Users disabling SWAT, not using ldapsam passdb backends and not using the 'mangling method = hash' option are not vulnerable.


All Samba users should upgrade to the latest version:
# emerge sync # emerge -pv '>=net-fs/samba-3.0.5' # emerge '>=net-fs/samba-3.0.5'

See Also

Plugin Details

Severity: Critical

ID: 14554

File Name: gentoo_GLSA-200407-21.nasl

Version: $Revision: 1.14 $

Type: local

Published: 2004/08/30

Modified: 2015/04/13

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:samba, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2004/07/29

Vulnerability Publication Date: 2004/07/22

Reference Information

CVE: CVE-2004-0600, CVE-2004-0686

OSVDB: 8190, 8191

GLSA: 200407-21