VDB-155587 · CVE-2020-13485 · GCVE-0-2020-13485

Knock Knock Plugin up to 1.2.7 on Craft CMS IP Whitelist X-Forwarded-For comparison

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.
7.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Knock Knock Plugin up to 1.2.7 on Craft CMS. It has been classified as critical. This vulnerability affects unknown code of the component IP Whitelist Handler. This manipulation of the argument X-Forwarded-For as part of HTTP Header causes comparison. This vulnerability is tracked as CVE-2020-13485. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Knock Knock Plugin up to 1.2.7 on Craft CMS and classified as critical. Affected by this vulnerability is an unknown code block of the component IP Whitelist Handler. The manipulation of the argument X-Forwarded-For as part of a HTTP Header leads to a comparison vulnerability. The CWE definition for the vulnerability is CWE-697. The product compares two entities in a security-relevant context, but the comparison is incorrect, which may lead to resultant weaknesses. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Knock Knock plugin before 1.2.8 for Craft CMS allows IP Whitelist bypass via an X-Forwarded-For HTTP header.

The weakness was disclosed 05/25/2020. This vulnerability is known as CVE-2020-13485 since 05/25/2020. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.2.8 eliminates this vulnerability.

The entry VDB-155588 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Knock Knock Plugin

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
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: Comparison
CWE: CWE-697
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Knock Knock Plugin 1.2.8

Timelineinfo

05/25/2020 🔍
05/25/2020 +0 days 🔍
05/26/2020 +1 days 🔍
05/26/2020 +0 days 🔍

Sourcesinfo

Status: Not defined

CVE: CVE-2020-13485 (🔍)
GCVE (CVE): GCVE-0-2020-13485
GCVE (VulDB): GCVE-100-155587
See also: 🔍

Entryinfo

Created: 05/26/2020 07:07
Updated: 05/26/2020 07:12
Changes: 05/26/2020 07:07 (40), 05/26/2020 07:12 (17)
Complete: 🔍
Cache ID: 216::103

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