WordPress up to 4.5.3 ajax-actions.php wp_ajax_update_plugin access control

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

A vulnerability has been found in WordPress (Content Management System) and classified as critical. Affected by this vulnerability is the function wp_ajax_update_plugin of the file wp-admin/includes/ajax-actions.php. The manipulation of the argument plugin with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress before 4.6 makes a get_plugin_data call before checking the update_plugins capability, which allows remote authenticated users to bypass intended read-access restrictions via the plugin parameter to wp-admin/admin-ajax.php, a related issue to CVE-2016-6896.

The bug was discovered 01/18/2017. The weakness was disclosed 01/18/2017 by Yorick Koster (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2016-10148 since 01/18/2017. The attack can be launched remotely. The successful exploitation needs a single authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

By approaching the search of inurl:wp-admin/includes/ajax-actions.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 93111 (WordPress < 4.6 Multiple Vulnerabilities), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11763 (WordPress Prior to 4.6 Multiple Security Vulnerabilities).

Upgrading to version 4.6 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 Tenable (93111) and SecurityFocus (BID 96847†). The entries VDB-90906 and VDB-90907 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93111
Nessus Name: WordPress < 4.6 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881268
OpenVAS Name: WordPress Core Ajax handlers CSRF and Directory Traversal Vulnerabilities (Linux)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: WordPress 4.6

Timelineinfo

08/16/2016 🔍
08/25/2016 +9 days 🔍
01/18/2017 +146 days 🔍
01/18/2017 +0 days 🔍
01/18/2017 +0 days 🔍
01/18/2017 +0 days 🔍
01/18/2017 +0 days 🔍
01/19/2017 +1 days 🔍
11/01/2022 +2112 days 🔍

Sourcesinfo

Product: wordpress.com

Advisory: 38168
Researcher: Yorick Koster
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-10148 (🔍)
GCVE (CVE): GCVE-0-2016-10148
GCVE (VulDB): GCVE-100-95467
SecurityFocus: 96847 - WordPress 'wp_ajax_update_plugin()' Function Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 01/19/2017 09:38 AM
Updated: 11/01/2022 10:25 AM
Changes: 01/19/2017 09:38 AM (77), 06/08/2020 08:49 AM (4), 11/01/2022 10:18 AM (3), 11/01/2022 10:25 AM (1)
Complete: 🔍
Cache ID: 18:DEB:40

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