Samba 3.6.x < 3.6.3 Denial of Service

medium Nessus Plugin ID 57752

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Synopsis

The remote Samba server is affected by a denial of service vulnerability.

Description

According to its banner, the version of Samba 3.6.x running on the remote host is earlier than 3.6.3. Errors exist in the files 'source3/lib/substitute.c' and 'sources3/smbd/server.c' that leak small amounts of memory when processing every connection attempt.

An attacker can continually make connections to the server and cause a denial of service attack against the affected smbd service.

Note that Nessus has not actually tried to exploit this issue or otherwise determine if the patch has been applied.

Solution

Either install the patch referenced in the project's advisory or upgrade to 3.6.3 or later.

Plugin Details

Severity: Medium

ID: 57752

File Name: samba_3_6_3.nasl

Version: 1.8

Type: remote

Family: Misc.

Published: 1/31/2012

Updated: 11/15/2018

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Vulnerability Information

CPE: cpe:/a:samba:samba

Required KB Items: Settings/ParanoidReport, SMB/samba, SMB/NativeLanManager

Exploit Ease: No known exploits are available

Patch Publication Date: 1/29/2012

Vulnerability Publication Date: 1/29/2012

Reference Information

CVE: CVE-2012-0817

BID: 51713

Detections

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