Authentication bypass in 389-ds-base



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3652
CWE-ID CWE-287
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 medium risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU55334

Risk: Medium

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

CVE-ID: CVE-2021-3652

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in the way the asterisk character is processed by the LDAP server when importing password hashes from /etc/shadow for disabled accounts. As a result of the flaw, if an LDAP admin imports such an account from a NIS or /etc/shadow database into Directory Server, any password will be valid for that account.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

389-ds-base: 2.0.1 - 2.0.6

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=1982782
https://github.com/389ds/389-ds-base/issues/4817
https://github.com/389ds/389-ds-base/pull/4819


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.



###SIDEBAR###