Kentico CMS up to 10.0.49/11.0.2 System Page 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.
3.9$0-$5k0.00

A vulnerability was found in Kentico CMS up to 10.0.49/11.0.2 (Content Management System). It has been classified as problematic. This affects an unknown function of the component System Page. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

Kentico 10 before 10.0.50 and 11 before 11.0.3 has XSS in which a crafted URL results in improper construction of a system page.

The bug was discovered 01/09/2018. The weakness was published 03/19/2018 (GitHub Repository). The advisory is shared at gist.github.com. This vulnerability is uniquely identified as CVE-2018-6842 since 02/07/2018. It is possible to initiate the attack remotely. The successful exploitation requires a 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 was handled as a non-public zero-day exploit for at least 69 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 10.0.50 or 11.0.3 eliminates this vulnerability.

Similar entry is available at 114766.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
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: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CMS 10.0.50/11.0.3

Timelineinfo

01/09/2018 🔍
02/07/2018 +29 days 🔍
03/19/2018 +40 days 🔍
03/19/2018 +0 days 🔍
03/19/2018 +0 days 🔍
05/28/2020 +801 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2018-6842 (🔍)
See also: 🔍

Entryinfo

Created: 03/19/2018 20:34
Updated: 05/28/2020 20:20
Changes: 03/19/2018 20:34 (60), 05/28/2020 20:20 (1)
Complete: 🔍
Cache ID: 3:688:103

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