VDB-95346 · CVE-2017-5476 · ID 439

Serendipity up to 2.0.5 Event Plugin/Sidebar Plugin cross-site request forgery

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.
6.4	$0-$5k	0.00

A vulnerability classified as problematic has been found in Serendipity up to 2.0.5 (Content Management System). Affected is some unknown processing of the component Event Plugin/Sidebar Plugin. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. CWE is classifying the issue as CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. This is going to have an impact on integrity. CVE summarizes:

Serendipity through 2.0.5 allows CSRF for the installation of an event plugin or a sidebar plugin.

The bug was discovered 01/13/2017. The weakness was released 01/14/2017 (Website). The advisory is available at securityfocus.com. This vulnerability is traded as CVE-2017-5476 since 01/13/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 100789 (Serendipity < 2.1.1 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 11756 (Serendipity Multiple File Include and Cross-Site Scripting Vulnerabilities).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (100789) and SecurityFocus (BID 95659†).

Productinfo

Type

Content Management System

Name

Serendipity

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cross-site request forgery
CWE: CWE-352 / CWE-862 / CWE-863
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 100789
Nessus Name: Serendipity < 2.1.1 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800609
OpenVAS Name: Serendipity <= 2.0.5 Multiple Vulnerabilities
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: 🔍

Timelineinfo

01/13/2017 🔍
01/13/2017 +0 days 🔍
01/14/2017 +1 days 🔍
01/14/2017 +0 days 🔍
01/14/2017 +0 days 🔍
01/15/2017 +1 days 🔍
04/09/2017 +84 days 🔍
06/14/2017 +66 days 🔍
10/28/2022 +1962 days 🔍

Sourcesinfo

Advisory: 439⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5476 (🔍)
SecurityFocus: 95659 - Serendipity CVE-2017-5476 Cross Site Request Forgery Vulnerability
OSVDB: - CVE-2017-5476 - Serendipity - Cross-Site Request Forgery Issue

Entryinfo

Created: 01/15/2017 10:40 AM
Updated: 10/28/2022 07:59 PM
Changes: 01/15/2017 10:40 AM (73), 07/21/2020 06:16 PM (8), 10/28/2022 07:59 PM (3)
Complete: 🔍
Cache ID: 98:47A:40