VDB-175413 · CVE-2020-21055 · GCVE-0-2020-21055

FusionPBX 4.5.7 app\edit\filerename.php folder/filename/newfilename pathname traversal

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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in FusionPBX 4.5.7. It has been rated as critical. The impacted element is an unknown function of the file app\edit\filerename.php. Performing a manipulation of the argument folder/filename/newfilename results in pathname traversal. This vulnerability was named CVE-2020-21055. There is no available exploit. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in FusionPBX 4.5.7. This affects an unknown function of the file app\edit\filerename.php. The manipulation of the argument folder/filename/newfilename with an unknown input leads to a pathname traversal vulnerability. CWE is classifying the issue as CWE-21. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 05/21/2021. The advisory is shared at resp3ctblog.wordpress.com. This vulnerability is uniquely identified as CVE-2020-21055. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

By approaching the search of inurl:app\edit\filerename.php it is possible to find vulnerable targets with Google Hacking.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

FusionPBX

Version

4.5.7

License

free

Website

Product: https://github.com/fusionpbx/fusionpbx/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Pathname traversal
CWE: CWE-21 / CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

08/13/2020 🔍
05/21/2021 +281 days 🔍
05/21/2021 +0 days 🔍
05/23/2021 +2 days 🔍

Sourcesinfo

Product: github.com

Advisory: resp3ctblog.wordpress.com
Status: Confirmed

CVE: CVE-2020-21055 (🔍)
GCVE (CVE): GCVE-0-2020-21055
GCVE (VulDB): GCVE-100-175413

Entryinfo

Created: 05/21/2021 06:56
Updated: 05/23/2021 08:40
Changes: 05/21/2021 06:56 (38), 05/23/2021 08:40 (5)
Complete: 🔍
Cache ID: 216::103