openEuler 22.03 LTS update for three-eight-nine-ds-base

1) Information disclosure

EUVDB-ID: #VU54105

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-35518

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 excessive data output by the application. When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

python3-lib389: before 1.4.3.20-1

cockpit-389-ds: before 1.4.3.20-1

389-ds-base-legacy-tools: before 1.4.3.20-1

389-ds-base-help: before 1.4.3.20-1

389-ds-base-debugsource: before 1.4.3.20-1

389-ds-base-debuginfo: before 1.4.3.20-1

389-ds-base-snmp: before 1.4.3.20-1

389-ds-base-devel: before 1.4.3.20-1

389-ds-base: before 1.4.3.20-1

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2056

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.