WordPress up to 4.2.3 Legacy Theme Preview cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in WordPress up to 4.2.3 and classified as critical. Affected is an unknown function of the component Legacy Theme Preview Handler. This manipulation causes cross site scripting. This vulnerability appears as CVE-2015-5733. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in WordPress up to 4.2.3 (Content Management System). Affected by this vulnerability is an unknown part of the component Legacy Theme Preview Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in the refreshAdvancedAccessibilityOfItem function in wp-admin/js/nav-menu.js in WordPress before 4.2.4 allows remote attackers to inject arbitrary web script or HTML via an accessibility-helper title.

The weakness was presented 08/04/2015 as WordPress 4.2.4 Security and Maintenance Release as confirmed release notes (Website). The advisory is shared at wordpress.org. This vulnerability is known as CVE-2015-5733 since 03/05/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 85389 (Fedora 21 : wordpress-4.2.4-1.fc21 (2015-12148)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11552 (WordPress Prior to 4.2.4 Multiple Security Vulnerabilities).

Upgrading to version 4.2.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The release notes contains the following remark:

This release addresses six issues, including three cross-site scripting vulnerabilities and a potential SQL injection that could be used to compromise a site (...)

The vulnerability is also documented in the databases at Tenable (85389), SecurityFocus (BID 76331†), SecurityTracker (ID 1033178†) and Vulnerability Center (SBV-54647†). Additional details are provided at codex.wordpress.org. See VDB-76929, VDB-76934, VDB-76932 and VDB-76931 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 85389
Nessus Name: Fedora 21 : wordpress-4.2.4-1.fc21 (2015-12148)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for wordpress FEDORA-2015-12235
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: WordPress 4.2.4

Timelineinfo

03/05/2015 🔍
08/04/2015 +152 days 🔍
08/04/2015 +0 days 🔍
08/04/2015 +0 days 🔍
08/04/2015 +0 days 🔍
08/04/2015 +0 days 🔍
08/07/2015 +3 days 🔍
08/14/2015 +7 days 🔍
11/09/2015 +87 days 🔍
11/27/2015 +18 days 🔍
05/08/2018 +893 days 🔍

Sourcesinfo

Product: wordpress.com

Advisory: WordPress 4.2.4 Security and Maintenance Release
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5733 (🔍)
GCVE (CVE): GCVE-0-2015-5733
GCVE (VulDB): GCVE-100-76933
SecurityFocus: 76331 - WordPress Prior to 4.2.4 Multiple Security Vulnerabilities
SecurityTracker: 1033178
Vulnerability Center: 54647 - WordPress before 4.2.4 Remote XSS in wp-admin/js/nav-menu.js via an Accessibility-Helper Title, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 08/07/2015 10:11
Updated: 05/08/2018 09:10
Changes: 08/07/2015 10:11 (70), 05/08/2018 09:10 (13)
Complete: 🔍
Cache ID: 216:53A:103

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