VDB-95794 · CVE-2017-5553 · BID 95704

b2evolution up to 6.8.4 javascript URL _markdown.plugin.php cross site scripting

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.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in b2evolution up to 6.8.4. It has been declared as problematic. The affected element is an unknown function of the file plugins/markdown_plugin/_markdown.plugin.php of the component javascript URL Handler. Executing a manipulation can lead to cross site scripting. The identification of this vulnerability is CVE-2017-5553. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component. Once again VulDB remains the best source for vulnerability data.

Detailsinfo

A vulnerability was found in b2evolution up to 6.8.4 (Content Management System). It has been declared as problematic. This vulnerability affects some unknown processing of the file plugins/markdown_plugin/_markdown.plugin.php of the component javascript URL 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. CVE summarizes:

Cross-site scripting (XSS) vulnerability in plugins/markdown_plugin/_markdown.plugin.php in b2evolution before 6.8.5 allows remote authenticated users to inject arbitrary web script or HTML via a javascript: URL.

The bug was discovered 01/23/2017. The weakness was shared 01/23/2017 (Website). The advisory is available at b2evolution.net. This vulnerability was named CVE-2017-5553 since 01/22/2017. The attack can be initiated remotely. Required for exploitation is a single authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

By approaching the search of inurl:plugins/markdown_plugin/_markdown.plugin.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 6.8.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 95704†). The entry VDB-95792 is related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Content Management System

Name

b2evolution

Version

License

free

Website

Product: https://github.com/b2evolution/b2evolution/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
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: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

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: b2evolution 6.8.5
Patch: github.com

Timelineinfo

01/22/2017 🔍
01/23/2017 +1 days 🔍
01/23/2017 +0 days 🔍
01/23/2017 +0 days 🔍
01/23/2017 +0 days 🔍
01/23/2017 +0 days 🔍
11/03/2022 +2110 days 🔍

Sourcesinfo

Product: github.com

Advisory: ce5b36e44b714b18b0bcd34c6db0187b8d13bab8
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5553 (🔍)
GCVE (CVE): GCVE-0-2017-5553
GCVE (VulDB): GCVE-100-95794
SecurityFocus: 95704 - b2evolution CVE-2017-5553 Cross Site Scripting Vulnerability
OSVDB: - CVE-2017-5553 - b2evolution - Cross-Site Scripting Issue

See also: 🔍

Entryinfo

Created: 01/23/2017 04:25 PM
Updated: 11/03/2022 08:22 AM
Changes: 01/23/2017 04:25 PM (66), 11/03/2022 08:22 AM (4)
Complete: 🔍
Cache ID: 244:062:40