Brute-force attack in Fedora 389-ds-base



| Updated: 2017-09-06
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7551
CWE-ID CWE-307
Exploitation vector Network
Public exploit N/A
Vulnerable software
 389-ds-base
Server applications / Directory software, identity management

Vendor 389 Directory Server Project

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Brute-force attack

EUVDB-ID: #VU8118

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 - Improper Restriction of Excessive Authentication Attempts

Exploit availability: No

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 - 1.3.6.6

CPE2.3 External links

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


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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