Improper Restriction of Excessive Authentication Attempts in Nextcloud Talk

1) Improper Restriction of Excessive Authentication Attempts

EUVDB-ID: #VU82076

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-45149

CWE-ID: CWE-307 - Improper Restriction of Excessive Authentication Attempts

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the number of login attempts is not limited. A remote user can perform a brute-force attack and gain access to public talk conversation passwords.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Talk: 15.0.0 - 17.1.0

External links

http://github.com/nextcloud/security-advisories/security/advisories/GHSA-7rf8-pqmj-rpqv
http://hackerone.com/reports/2094473
http://github.com/nextcloud/spreed/pull/10545

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.