#VU52847 Security features bypass


Published: 2021-05-04

Vulnerability identifier: #VU52847

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

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, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.1.0, 4.1.1, 4.1.2, 4.2.0

CPE

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


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability