Vulnerability identifier: #VU52847

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2021-31865

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Redmine
Web applications / CRM systems

Vendor: Ruby

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the security features bypass issue. A remote attacker can send a specially crafted request and circumvent the allowed filename extensions of uploaded attachments.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Redmine: 4.0.0 - 4.2.0

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CPE

• cpe:2.3:a:ruby:redmine:4.0.0:*:*:*:*:*:*:*

External links
http://www.redmine.org/projects/redmine/wiki/Security_Advisories
http://www.redmine.org/news/131

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?