Vulnerability CVE-2020-35518


Published: 2021-03-26   Modified: 2021-03-27

Description:
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.

Type:

CWE-200

(Information Exposure)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Redhat -> 389 directory server 
Redhat -> Directory server 
Redhat -> Enterprise linux 

 References:
https://bugzilla.redhat.com/show_bug.cgi?id=1905565
https://github.com/389ds/389-ds-base/commit/b6aae4d8e7c8a6ddd21646f94fef1bf7f22c3f32
https://github.com/389ds/389-ds-base/commit/cc0f69283abc082488824702dae485b8eae938bc
https://github.com/389ds/389-ds-base/issues/4480

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