Information disclosure in Nextcloud Mail



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-32652
CWE-ID CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Nextcloud Mail
Web applications / Modules and components for CMS

Vendor Nextcloud

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU53817

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-32652

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly impose security restrictions. A remote authenticated attacker can access mail metadata of other users. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nextcloud Mail: 1.4.0 - 1.8.1

CPE2.3 External links

https://hackerone.com/reports/1094063
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mxx2-6rg9-v2vc


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.



###SIDEBAR###