CVE-2019-15941

OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs.

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://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1881	Third Party Advisory
https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out/	Third Party Advisory
https://www.debian.org/security/2019/dsa-4533	Third Party Advisory
https://seclists.org/bugtraq/2019/Sep/46	Mailing List Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:lemonldap-ng:lemonldap\:\::*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Information

Published : 2019-09-25 13:15

Updated : 2020-08-18 08:05

NVD link : CVE-2019-15941

Mitre link : CVE-2019-15941

JSON object : View

CWE

CWE-863

Incorrect Authorization

Advertisement

Products Affected

debian

debian_linux

lemonldap-ng

lemonldap\

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1881", "name": "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues/1881", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out/", "name": "https://projects.ow2.org/view/lemonldap-ng/lemonldap-ng-2-0-6-is-out/", "tags": ["Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.debian.org/security/2019/dsa-4533", "name": "DSA-4533", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}, {"url": "https://seclists.org/bugtraq/2019/Sep/46", "name": "20190926 [SECURITY] [DSA 4533-1] lemonldap-ng security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "BUGTRAQ"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "OpenID Connect Issuer in LemonLDAP::NG 2.x through 2.0.5 may allow an attacker to bypass access control rules via a crafted OpenID Connect authorization request. To be vulnerable, there must exist an OIDC Relaying party within the LemonLDAP configuration with weaker access control rules than the target RP, and no filtering on redirection URIs."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-863"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2019-15941", "ASSIGNER": "cve@mitre.org"}}, "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": "2019-09-25T20:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:lemonldap-ng:lemonldap\\:\\::*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "2.0.5", "versionStartIncluding": "2.0.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-08-18T15:05Z"}