WordPress up to 4.2.0 Comment wp-includes/wp-db.php Stored cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in WordPress up to 4.2.0. The affected element is an unknown function of the file wp-includes/wp-db.php of the component Comment Handler. This manipulation causes cross site scripting (Stored). This vulnerability is registered as CVE-2015-3440. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in WordPress up to 4.2.0 (Content Management System). It has been declared as problematic. Affected by this vulnerability is an unknown code of the file wp-includes/wp-db.php of the component Comment Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability (Stored). 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 wp-includes/wp-db.php in WordPress before 4.2.1 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type.

The weakness was published 08/03/2015 by Jouko Pynnonen (Website). The advisory is shared at wordpress.org. This vulnerability is known as CVE-2015-3440 since 04/28/2015. The exploitation appears to be easy. 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. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

A public exploit has been developed by klikki and been published even before and not after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 98 days. During that time the estimated underground price was around $5k-$25k. By approaching the search of inurl:wp-includes/wp-db.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 83918 (Debian DLA-236-1 : wordpress security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115192 (Fedora Security Update for wordpress (FEDORA-2015-7725)).

Upgrading to version 4.2.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (36844), Tenable (83918), SecurityFocus (BID 74334†) and OSVDB (121320†). Similar entries are available at VDB-68304, VDB-68562, VDB-68563 and VDB-68564. 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: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: klikki
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 83918
Nessus Name: Debian DLA-236-1 : wordpress security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703250
OpenVAS Name: Debian Security Advisory DSA 3250-1 (wordpress - security update)
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 4.2.1

Timelineinfo

04/26/2015 🔍
04/27/2015 +1 days 🔍
04/27/2015 +0 days 🔍
04/28/2015 +1 days 🔍
08/03/2015 +97 days 🔍
08/03/2015 +0 days 🔍
08/04/2015 +1 days 🔍
02/06/2025 +3474 days 🔍

Sourcesinfo

Product: wordpress.com

Advisory: 131644
Researcher: Jouko Pynnonen
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3440 (🔍)
GCVE (CVE): GCVE-0-2015-3440
GCVE (VulDB): GCVE-100-76885

OVAL: 🔍

SecurityFocus: 74334 - WordPress Comment Section HTML Injection Vulnerability
OSVDB: 121320
SecurityTracker: 1032199

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/04/2015 18:21
Updated: 02/06/2025 04:48
Changes: 08/04/2015 18:21 (58), 10/08/2017 09:49 (21), 06/07/2022 10:28 (4), 06/07/2022 10:33 (1), 02/06/2025 04:48 (14)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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