Information disclosure in Nextcloud Server



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-31118
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Nextcloud Server
Client/Desktop applications / Messaging software

Vendor Nextcloud

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU66128

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-31118

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to missing brute force protection on cloud federation sharing. A remote attacker can perform a brute force attack to find if federated sharing is being used and potentially try to brute force access tokens for federated shares.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nextcloud Server: 22.2.0 - 24.0.1

CPE2.3 External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2vwh-5v93-3vcq
https://github.com/nextcloud/server/pull/32843/commits/6eb692da7fe73c899cb6a8d2aa045eddb1f14018


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.



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