WP Fastest Cache Plugin up to 0.8.9.0 on WordPress wpFastestCache.php Referer Header input validation

HistoryDiffrelatejsonxmlCTI

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.
5.5	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in WP Fastest Cache Plugin up to 0.8.9.0 on WordPress. The impacted element is the function wp_postratings_clear_fastest_cache/rm_folder_recursively of the file wpFastestCache.php. The manipulation with the input ../ as part of Referer Header leads to input validation. This vulnerability is traded as CVE-2019-6726. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in WP Fastest Cache Plugin up to 0.8.9.0 on WordPress (WordPress Plugin). It has been rated as problematic. This issue affects the function wp_postratings_clear_fastest_cache/rm_folder_recursively of the file wpFastestCache.php. The manipulation with the input value ../ leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is integrity, and availability. The summary by CVE is:

The WP Fastest Cache plugin through 0.8.9.0 for WordPress allows remote attackers to delete arbitrary files because wp_postratings_clear_fastest_cache and rm_folder_recursively in wpFastestCache.php mishandle ../ in an HTTP Referer header.

The bug was discovered 03/09/2019. The weakness was shared 07/29/2019. The identification of this vulnerability is CVE-2019-6726 since 01/23/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at packetstormsecurity.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 142 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:wpFastestCache.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

WordPress Plugin

Name

WP Fastest Cache Plugin

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/23/2019 🔍
03/09/2019 +45 days 🔍
07/29/2019 +142 days 🔍
07/30/2019 +1 days 🔍
06/13/2024 +1780 days 🔍

Sourcesinfo

Advisory: 152042
Status: Not defined

CVE: CVE-2019-6726 (🔍)
GCVE (CVE): GCVE-0-2019-6726
GCVE (VulDB): GCVE-100-138959
OSVDB: - WP Fastest Cache plugin for WordPress directory traversal

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

Entryinfo

Created: 07/30/2019 08:45
Updated: 06/13/2024 06:17
Changes: 07/30/2019 08:45 (42), 07/15/2020 11:56 (18), 11/14/2023 08:28 (4), 06/13/2024 06:17 (22)
Complete: 🔍
Cache ID: 216::103