Citrix and NetScaler SD-WAN Center Unauthenticated Directory Traversal File Write

Critical Nessus Plugin ID 132102

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VPR Score: 5.9

Synopsis

The remote host is susceptible to directory traversal with write capability by a remote, unauthenticated attacker.

Description

The remote Citrix SD-WAN Center or NetScaler SD-WAN Center is susceptible to directory traversal and file writes in arbitrary locations. This is due to improper sanitization of user-supplied input in the applianceSettingsFileTransfer action of ApplianceSettingsController. An unauthenticated, remote attacker can exploit this by routing traffic through the Collector controller and supplying crafted values for 'filename', 'filedata', and 'workspace_id'. This allows writing files to locations writable by the 'www-data' user, as well as writing crafted PHP files to /home/talariuser/www/app/webroot/files/ to execute arbitrary PHP code.

Solution

Upgrade to Citrix SD-WAN Center version 10.2.3 or later or NetScaler SD-WAN Center version 10.0.8 or later.

See Also

https://support.citrix.com/article/CTX251987

http://www.nessus.org/u?a1b1f9a7

Plugin Details

Severity: Critical

ID: 132102

File Name: citrix_sdwan_center_unauth_dir_traversal_write.nasl

Version: 1.4

Type: remote

Family: CGI abuses

Published: 2019/12/18

Updated: 2019/12/19

Dependencies: 124001

Risk Information

Risk Factor: Critical

VPR Score: 5.9

CVSS Score Source: CVE-2019-12990

CVSS v2.0

Base Score: 10

Temporal Score: 7.8

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: x-cpe:/a:citrix:sd-wan-center

Required KB Items: installed_sw/Citrix SD-WAN Center

Exploit Available: true

Exploit Ease: Exploits are available

Exploited by Nessus: true

Patch Publication Date: 2019/06/11

Vulnerability Publication Date: 2019/07/02

Reference Information

CVE: CVE-2019-12990

BID: 109133