Information disclosure in Nextcloud Server



Published: 2017-05-08 | Updated: 2020-07-18
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-0895
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Nextcloud Server
Client/Desktop applications / Messaging software

Vendor Nextcloud

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU31421

Risk: Low

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

CVE-ID: CVE-2017-0895

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to gain access to sensitive information.

Nextcloud Server before 10.0.4 and 11.0.2 are vulnerable to disclosure of calendar and addressbook names to other logged-in users. Note that no actual content of the calendar and addressbook has been disclosed.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nextcloud Server: 11.0.0 - 11.0.1

CPE2.3 External links

http://hackerone.com/reports/203594
http://nextcloud.com/security/advisory/?id=nc-sa-2017-012


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.



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