CVE-2020-35518

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.

CVSS v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1905565	Issue Tracking Patch Vendor Advisory
https://github.com/389ds/389-ds-base/commit/b6aae4d8e7c8a6ddd21646f94fef1bf7f22c3f32	Patch Third Party Advisory
https://github.com/389ds/389-ds-base/commit/cc0f69283abc082488824702dae485b8eae938bc	Patch Third Party Advisory
https://github.com/389ds/389-ds-base/issues/4480	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:redhat:389_directory_server::::::::
	cpe:2.3:o:redhat:389_directory_server::::::::
	cpe:2.3:o:redhat:389_directory_server::::::::

Configuration 2 (hide)

OR	cpe:2.3:a:redhat:directory_server:11.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*

History

05 Aug 2022, 17:42

Type	Values Removed	Values Added
CWE	~~CWE-200~~	CWE-203

Information

Published : 2021-03-26 17:15

Updated : 2024-02-04 21:47

NVD link : CVE-2020-35518

Mitre link : CVE-2020-35518

CVE.ORG link : CVE-2020-35518

JSON object : View

Products Affected

redhat

directory_server
389_directory_server
enterprise_linux

CWE

CWE-203

Observable Discrepancy

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

{"id": "CVE-2020-35518", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2021-03-26T17:15:12.280", "references": [{"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1905565", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://github.com/389ds/389-ds-base/commit/b6aae4d8e7c8a6ddd21646f94fef1bf7f22c3f32", "tags": ["Patch", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://github.com/389ds/389-ds-base/commit/cc0f69283abc082488824702dae485b8eae938bc", "tags": ["Patch", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://github.com/389ds/389-ds-base/issues/4480", "tags": ["Patch", "Third Party Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-203"}]}, {"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-200"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Cuando se vincula con un DN durante la autenticaci\u00f3n, la respuesta de 389-ds-base ser\u00e1 diferente si el DN se presenta o no. Esto puede ser usado por un atacante no autenticado para comprobar la existencia de una entrada en la base de datos de LDAP."}], "lastModified": "2022-08-05T17:42:42.370", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:redhat:389_directory_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "826F6485-30A1-49A6-8E66-4F53DAD03EDE", "versionEndExcluding": "1.4.3.19"}, {"criteria": "cpe:2.3:o:redhat:389_directory_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7273B979-C446-45CA-A601-9F81F6DA503C", "versionEndExcluding": "1.4.4.13", "versionStartIncluding": "1.4.4.0"}, {"criteria": "cpe:2.3:o:redhat:389_directory_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "72D21DC8-ED0C-4C96-A9CF-0EE1E3EBD7F9", "versionEndExcluding": "2.0.3", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:redhat:directory_server:11.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2A169F6D-88A5-4631-9D30-519350ACFE6E"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}