#VU57651 Information disclosure in Nextcloud Richdocuments - CVE-2021-39223


Vulnerability identifier: #VU57651

Vulnerability risk: Medium

CVSSv4.0: 1.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-39223

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nextcloud Richdocuments
Web applications / Modules and components for CMS

Vendor: Nextcloud

Description

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

The vulnerability exists due to the affected application returns verbatim exception messages to the user. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nextcloud Richdocuments: 3.8.0 - 4.2.2


External links
https://github.com/nextcloud/richdocuments/pull/1760
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93
https://hackerone.com/reports/1253460


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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