Detections
Analytics

Samba < 3.0.35 / 3.2.13 / 3.3.6 Multiple Vulnerabilities

low Nessus Plugin ID 39502

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Synopsis

The remote Samba server may be affected by a security bypass vulnerability.

Description

According to its version number, the version of Samba running on the remote host has a security bypass vulnerability. Access restrictions can be bypassed due to a read of uninitialized data in smbd. This could allow a user to modify an access control list (ACL), even when they should be denied permission.

Note the 'dos filemode' parameter must be set to 'yes' in smb.conf in order for an attack to be successful (the default setting is 'no').

Also note versions 3.2.0 - 3.2.12 of smbclient are affected by a format string vulnerability, though Nessus has not checked for this.

Solution

Upgrade to Samba version 3.3.6 / 3.2.13 / 3.0.35 or later, or apply the appropriate patch referenced in the vendor's advisory.

See Also

https://www.samba.org/samba/security/CVE-2009-1888.html

https://www.samba.org/samba/security/CVE-2009-1886.html

Plugin Details

Severity: Low

ID: 39502

File Name: samba_acl_security_bypass.nasl

Version: 1.15

Type: remote

Family: Misc.

Published: 6/24/2009

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.7

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

Vulnerability Information

CPE: cpe:/a:samba:samba

Required KB Items: SMB/samba, SMB/NativeLanManager

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 7/10/2006

Reference Information

CVE: CVE-2006-3403, CVE-2009-1886, CVE-2009-1888

BID: 35472

CWE: 134, 264

Secunia: 35539