Samba 4.4.x < 4.4.14 / 4.5.x < 4.5.10 / 4.6.x < 4.6.4 RCE (SambaCry)

critical Nessus Network Monitor Plugin ID 700127

Synopsis

The remote host is running a version of Samba server that is affected by a critical Remote Code Execution (RCE) attack vector.

Description

Versions of Samba 4.4.x prior to 4.4.14, 4.5.x prior to 4.5.10, and 4.6.x prior to 4.6.4 are unpatched, and therefore affected by a flaw in the 'is_known_pipename()' function in 'rpc_server/srv_pipe.c' that is due to the program failing to restrict users from accessing files as nt specific pipes. By uploading a shared library to a writable location, this may allow an authenticated, remote attacker to execute arbitrary code with root privileges.

Solution

Upgrade Samba to version 4.6.4 or later. If version 4.6.x cannot be obtained, versions 4.5.10, and 4.4.14 are also patched for these issues.

Plugin Details

Severity: Critical

ID: 700127

Family: Samba

Published: 5/26/2017

Updated: 3/6/2019

Nessus ID: 42411

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:X/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:samba:samba

Patch Publication Date: 5/24/2017

Vulnerability Publication Date: 5/24/2017

Exploitable With

Metasploit (Samba is_known_pipename() Arbitrary Module Load)

Reference Information

CVE: CVE-2017-7494

BID: 98636

Detections

Analytics