Vulnerability identifier: #VU49381

Vulnerability risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-28208

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Rocket.Chat
Web applications / Forum & blogging software

Vendor: Rocket.Chat Technologies Corp.

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an email address enumeration issue in the password reset function. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Rocket.Chat: 3.0.0 - 3.9.1

---

External links
http://packetstormsecurity.com/files/160845/Rocket.Chat-3.7.1-Email-Address-Enumeration.html
http://www.openwall.com/lists/oss-security/2021/01/07/1
http://www.openwall.com/lists/oss-security/2021/01/08/1
http://trovent.github.io/security-advisories/TRSA-2010-01/TRSA-2010-01.txt
http://trovent.io/security-advisory-2010-01

---

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. However, proof of concept for this vulnerability is available.