VDB-186186 · CVE-2021-43406 · GCVE-0-2021-43406

FusionPBX up to 4.5.29 fax_post_size privilege escalation

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 classified as problematic was found in FusionPBX up to 4.5.29. Affected by this vulnerability is an unknown functionality. The manipulation of the argument fax_post_size results in an unknown weakness. This vulnerability is identified as CVE-2021-43406. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in FusionPBX up to 4.5.29. The manipulation of the argument fax_post_size with an unknown input leads to a unknown weakness. The impact remains unknown.

The weakness was released 11/06/2021 as 0377b2152c0e59c8f35297f9a9b6ee335a62d963. The advisory is available at github.com. This vulnerability is traded as CVE-2021-43406 since 11/05/2021. Technical details are known, but there is no available exploit.

Upgrading to version 4.5.30 eliminates this vulnerability. Applying the patch 0377b2152c0e59c8f35297f9a9b6ee335a62d963 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

FusionPBX

Version

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: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: FusionPBX 4.5.30
Patch: 0377b2152c0e59c8f35297f9a9b6ee335a62d963

Timelineinfo

11/05/2021 🔍
11/06/2021 +1 days 🔍
11/06/2021 +0 days 🔍
11/10/2021 +4 days 🔍

Sourcesinfo

Product: github.com

Advisory: 0377b2152c0e59c8f35297f9a9b6ee335a62d963
Status: Confirmed

CVE: CVE-2021-43406 (🔍)
GCVE (CVE): GCVE-0-2021-43406
GCVE (VulDB): GCVE-100-186186

Entryinfo

Created: 11/06/2021 09:45
Updated: 11/10/2021 12:29
Changes: 11/06/2021 09:45 (39), 11/10/2021 12:29 (1)
Complete: 🔍
Cache ID: 216::103