#VU8118 Brute-force attack in 389-ds-base - CVE-2017-7551

Vulnerability identifier: #VU8118

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7551

CWE-ID: CWE-307

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
389-ds-base
Server applications / Directory software, identity management

Vendor: 389 Directory Server Project

Description
The vulnerability allows remote users to perform brute-force attack on the target system.

The vulnerability exists due to different return codes returned on password attempts. A remote attacker can perform password brute-force attacks during account lockout and obtain valid user's credentials.

Successful exploitation of this vulnerability may result in unauthorized access to the system.

Mitigation
Update to version 1.3.5.19 or 1.3.6.7.

Vulnerable software versions

389-ds-base: 1.1.46, 1.3.5.18, 1.3.6.4 - 1.3.6.6

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External links
https://pagure.io/389-ds-base/issue/49336

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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.