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.
https://bugzilla.redhat.com/show_bug.cgi?id=1905565
https://github.com/389ds/389-ds-base/issues/4480
https://github.com/389ds/389-ds-base/commit/cc0f69283abc082488824702dae485b8eae938bc
https://github.com/389ds/389-ds-base/commit/b6aae4d8e7c8a6ddd21646f94fef1bf7f22c3f32
Source: MITRE
Published: 2021-03-26
Updated: 2022-08-05
Type: CWE-203
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 5.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Impact Score: 1.4
Exploitability Score: 3.9
Severity: MEDIUM