CVE-2020-26214

In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/alerta/alerta/issues/1277	Third Party Advisory
https://pypi.org/project/alerta-server/8.1.0/	Third Party Advisory
https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh	Third Party Advisory
https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65	Patch Third Party Advisory
https://tools.ietf.org/html/rfc4513#section-5.1.2	Third Party Advisory
https://github.com/alerta/alerta/pull/1345	Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:alerta_project:alerta::::::::
	cpe:2.3:a:alerta_project:alerta::::::::

Information

Published : 2020-11-06 10:15

Updated : 2020-11-17 13:08

NVD link : CVE-2020-26214

Mitre link : CVE-2020-26214

JSON object : View

CWE

CWE-287

Improper Authentication

Advertisement

Products Affected

alerta_project

alerta

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/alerta/alerta/issues/1277", "name": "https://github.com/alerta/alerta/issues/1277", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://pypi.org/project/alerta-server/8.1.0/", "name": "https://pypi.org/project/alerta-server/8.1.0/", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh", "name": "https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65", "name": "https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://tools.ietf.org/html/rfc4513#section-5.1.2", "name": "https://tools.ietf.org/html/rfc4513#section-5.1.2", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/alerta/alerta/pull/1345", "name": "https://github.com/alerta/alerta/pull/1345", "tags": ["Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "In Alerta before version 8.1.0, users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider. Only deployments where LDAP servers are configured to allow unauthenticated authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-287"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-26214", "ASSIGNER": "security-advisories@github.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "HIGH", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}}, "publishedDate": "2020-11-06T18:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:alerta_project:alerta:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "7.5.7"}, {"cpe23Uri": "cpe:2.3:a:alerta_project:alerta:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "8.1.0", "versionStartIncluding": "8.0.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-11-17T21:08Z"}