Email Users Plugin 4.8.3 on WordPress cross-site request forgery

EntryHistoryDiffjsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.0	$0-$5k	0.00

A vulnerability classified as problematic has been found in Email Users Plugin 4.8.3 on WordPress (WordPress Plugin). Affected is an unknown code. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. CWE is classifying the issue as CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. This is going to have an impact on integrity.

The weakness was shared 08/15/2016 by Julien Rentrop as OVE-20160718-0001 as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The advisory points out:

It was found that the Email Users WordPress Plugin is vulnerable to Cross-Site Request Forgery. By using this issue it is possible for an attacker to send arbitrary (bulk) email messages to any address. In order to exploit this issue, an attacker needs to lure a target user into clicking a specially crafted link or visiting a malicious website (or advertisement).

Upgrading to version 4.8.4 eliminates this vulnerability.

Further details are available at sumofpwn.nl.

Productinfo

Type

WordPress Plugin

Name

Email Users Plugin

Version

4.8.3

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.3
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross-site request forgery
CWE: CWE-352 / CWE-862 / CWE-863
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Email Users Plugin 4.8.4

Timelineinfo

08/15/2016 🔍
08/19/2016 +4 days 🔍
03/30/2019 +953 days 🔍

Sourcesinfo

Advisory: OVE-20160718-0001
Researcher: Julien Rentrop
Status: Not defined
Misc.: 🔍

Entryinfo

Created: 08/19/2016 11:50
Updated: 03/30/2019 09:35
Changes: 08/19/2016 11:50 (42), 03/30/2019 09:35 (2)
Complete: 🔍