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CVE-2020-35518

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Date: March 26, 2021

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.

Language: C

Severity Score

Related Resources (9)

https://security-tracker.debian.org/tracker/CVE-2020-35518
https://github.com/389ds/389-ds-base/commit/cc0f69283abc082488824702dae485b8eae938bc
https://bugzilla.redhat.com/show_bug.cgi?id=1905565
https://nvd.nist.gov/vuln/detail/CVE-2020-35518
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-35518
https://access.redhat.com/security/cve/CVE-2020-35518
https://github.com/389ds/389-ds-base/commit/b6aae4d8e7c8a6ddd21646f94fef1bf7f22c3f32
https://github.com/389ds/389-ds-base/issues/4480
https://www.mend.io/vulnerability-database/CVE-2020-35518

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Observable Discrepancy

CWE-203

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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