Multiple vulnerabilities in WP Statistics plugin for WordPress

Published: 2019-07-04 | Updated: 2019-07-08

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	N/A
CWE-ID	CWE-89 CWE-79
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	WP Statistics Web applications / Modules and components for CMS
Vendor	VeronaLabs

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

UPDATED: 08.07.2019
Added vulnerability #2.

1) SQL injection

EUVDB-ID: #VU18971

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to an endpoint of the API, which is exposed when the 'use cache plugin' setting is enabled. A remote attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

PoC:

time curl -X POST 'http://host/wp-json/wpstatistics/v1/hit' --data "wp_statistics_hit=x&wp_statistics_hit[track_all]=1&wp_statistics_hit[page_uri]=x&wp_statistics_hit[search_query]=x\' UNION ALL SELECT SLEEP(5)-- x"

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WP Statistics: 1.0 - 12.6.6.1

External links

http://github.com/wp-statistics/wp-statistics/commit/bd46721b97794a1b1520e24ff5023b6da738dd75

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Stored cross-site scripting

EUVDB-ID: #VU19034

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of the user’s IP. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

This vulnerability can only be exploited when the plugin uses a header to identify the IP address of the visitor (e.g. not REMOTE_ADDR)

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.