VDB-109261 · CVE-2017-16562 · EDB-ID 43117

UserPro Plugin up to 4.9.17.0 on WordPress up_auto_log access control

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.
8.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in UserPro Plugin up to 4.9.17.0 on WordPress. It has been classified as critical. This impacts an unknown function. This manipulation of the argument up_auto_log as part of Parameter causes access control. This vulnerability is handled as CVE-2017-16562. The attack can be initiated remotely. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in UserPro Plugin up to 4.9.17.0 on WordPress (WordPress Plugin). Affected by this vulnerability is an unknown code block. The manipulation of the argument up_auto_log as part of a Parameter leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The UserPro plugin before 4.9.17.1 for WordPress, when used on a site with the "admin" username, allows remote attackers to bypass authentication and obtain administrative access via a "true" value for the up_auto_log parameter in the QUERY_STRING to the default URI.

The bug was discovered 11/04/2017. The weakness was released 11/10/2017 as EDB-ID 43117 as not defined exploit (Exploit-DB). The advisory is shared at exploit-db.com. This vulnerability is known as CVE-2017-16562 since 11/06/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 110482 (UserPro Plugin for WordPress up_auto_log Parameter Remote Authentication Bypass), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r.

Upgrading to version 4.9.17.1 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (43117) and Tenable (110482). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

WordPress Plugin

Name

UserPro Plugin

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 110482
Nessus Name: UserPro Plugin for WordPress up_auto_log Parameter Remote Authentication Bypass
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63356
OpenVAS Name: WordPress UserPro Plugin Authentication Bypass
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: UserPro Plugin 4.9.17.1

Timelineinfo

10/26/2017 🔍
11/04/2017 +9 days 🔍
11/06/2017 +2 days 🔍
11/09/2017 +3 days 🔍
11/10/2017 +1 days 🔍
11/10/2017 +0 days 🔍
11/10/2017 +0 days 🔍
11/10/2017 +0 days 🔍
06/12/2018 +214 days 🔍
11/24/2025 +2722 days 🔍