ubuntu-cve-2021-40874
Vulnerability from osv_ubuntu
Published
2022-07-18 00:15
Modified
2026-05-20 14:53
Summary
Details
An issue was discovered in LemonLDAP::NG (aka lemonldap-ng) 2.0.13. When using the RESTServer plug-in to operate a REST password validation service (for another LemonLDAP::NG instance, for example) and using the Kerberos authentication method combined with another method with the Combination authentication plug-in, any password will be recognized as valid for an existing user.
Severity
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lemonldap-ng",
"binary_version": "1.4.6-3"
},
{
"binary_name": "liblemonldap-ng-common-perl",
"binary_version": "1.4.6-3"
},
{
"binary_name": "liblemonldap-ng-conf-perl",
"binary_version": "1.4.6-3"
},
{
"binary_name": "liblemonldap-ng-handler-perl",
"binary_version": "1.4.6-3"
},
{
"binary_name": "liblemonldap-ng-manager-perl",
"binary_version": "1.4.6-3"
},
{
"binary_name": "liblemonldap-ng-portal-perl",
"binary_version": "1.4.6-3"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "lemonldap-ng",
"purl": "pkg:deb/ubuntu/lemonldap-ng@1.4.6-3?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.3.3-1",
"1.4.6-1",
"1.4.6-2",
"1.4.6-3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lemonldap-ng",
"binary_version": "1.9.16-2"
},
{
"binary_name": "lemonldap-ng-fastcgi-server",
"binary_version": "1.9.16-2"
},
{
"binary_name": "lemonldap-ng-handler",
"binary_version": "1.9.16-2"
},
{
"binary_name": "liblemonldap-ng-common-perl",
"binary_version": "1.9.16-2"
},
{
"binary_name": "liblemonldap-ng-handler-perl",
"binary_version": "1.9.16-2"
},
{
"binary_name": "liblemonldap-ng-manager-perl",
"binary_version": "1.9.16-2"
},
{
"binary_name": "liblemonldap-ng-portal-perl",
"binary_version": "1.9.16-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "lemonldap-ng",
"purl": "pkg:deb/ubuntu/lemonldap-ng@1.9.16-2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.9.10-1",
"1.9.13-2",
"1.9.14-1",
"1.9.15-1",
"1.9.16-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lemonldap-ng",
"binary_version": "2.0.7+ds-2"
},
{
"binary_name": "lemonldap-ng-fastcgi-server",
"binary_version": "2.0.7+ds-2"
},
{
"binary_name": "lemonldap-ng-handler",
"binary_version": "2.0.7+ds-2"
},
{
"binary_name": "lemonldap-ng-uwsgi-app",
"binary_version": "2.0.7+ds-2"
},
{
"binary_name": "liblemonldap-ng-common-perl",
"binary_version": "2.0.7+ds-2"
},
{
"binary_name": "liblemonldap-ng-handler-perl",
"binary_version": "2.0.7+ds-2"
},
{
"binary_name": "liblemonldap-ng-manager-perl",
"binary_version": "2.0.7+ds-2"
},
{
"binary_name": "liblemonldap-ng-portal-perl",
"binary_version": "2.0.7+ds-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "lemonldap-ng",
"purl": "pkg:deb/ubuntu/lemonldap-ng@2.0.7+ds-2?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.5+ds-2",
"2.0.6+ds-2",
"2.0.7+ds-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lemonldap-ng",
"binary_version": "2.0.13+ds-3ubuntu1"
},
{
"binary_name": "lemonldap-ng-fastcgi-server",
"binary_version": "2.0.13+ds-3ubuntu1"
},
{
"binary_name": "lemonldap-ng-handler",
"binary_version": "2.0.13+ds-3ubuntu1"
},
{
"binary_name": "lemonldap-ng-uwsgi-app",
"binary_version": "2.0.13+ds-3ubuntu1"
},
{
"binary_name": "liblemonldap-ng-common-perl",
"binary_version": "2.0.13+ds-3ubuntu1"
},
{
"binary_name": "liblemonldap-ng-handler-perl",
"binary_version": "2.0.13+ds-3ubuntu1"
},
{
"binary_name": "liblemonldap-ng-manager-perl",
"binary_version": "2.0.13+ds-3ubuntu1"
},
{
"binary_name": "liblemonldap-ng-portal-perl",
"binary_version": "2.0.13+ds-3ubuntu1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "lemonldap-ng",
"purl": "pkg:deb/ubuntu/lemonldap-ng@2.0.13+ds-3ubuntu1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.11+ds-4",
"2.0.13+ds-3",
"2.0.13+ds-3ubuntu1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lemonldap-ng",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "lemonldap-ng-fastcgi-server",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "lemonldap-ng-handler",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "lemonldap-ng-uwsgi-app",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-common-perl",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-handler-perl",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-manager-perl",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-portal-perl",
"binary_version": "2.18.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-ssoaas-apache-client-perl",
"binary_version": "2.18.2+ds-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "lemonldap-ng",
"purl": "pkg:deb/ubuntu/lemonldap-ng@2.18.2+ds-1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.16.2+ds-1",
"2.17.1+ds-1",
"2.17.2+ds-1",
"2.17.2+ds-2",
"2.18.1+ds-1",
"2.18.2+ds-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lemonldap-ng",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "lemonldap-ng-fastcgi-server",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "lemonldap-ng-handler",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "lemonldap-ng-uwsgi-app",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "liblemonldap-ng-common-perl",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "liblemonldap-ng-handler-perl",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "liblemonldap-ng-manager-perl",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "liblemonldap-ng-portal-perl",
"binary_version": "2.21.0+ds-3"
},
{
"binary_name": "liblemonldap-ng-ssoaas-apache-client-perl",
"binary_version": "2.21.0+ds-3"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "lemonldap-ng",
"purl": "pkg:deb/ubuntu/lemonldap-ng@2.21.0+ds-3?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.20.2+ds-1build1",
"2.21.0+ds-3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "lemonldap-ng",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "lemonldap-ng-fastcgi-server",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "lemonldap-ng-handler",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "lemonldap-ng-uwsgi-app",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-common-perl",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-handler-perl",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-manager-perl",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-portal-perl",
"binary_version": "2.22.2+ds-1"
},
{
"binary_name": "liblemonldap-ng-ssoaas-apache-client-perl",
"binary_version": "2.22.2+ds-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "lemonldap-ng",
"purl": "pkg:deb/ubuntu/lemonldap-ng@2.22.2+ds-1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.21.0+ds-3",
"2.22.0+ds-2",
"2.22.1+ds-1",
"2.22.2+ds-1"
]
}
],
"aliases": [],
"details": "An issue was discovered in LemonLDAP::NG (aka lemonldap-ng) 2.0.13. When using the RESTServer plug-in to operate a REST password validation service (for another LemonLDAP::NG instance, for example) and using the Kerberos authentication method combined with another method with the Combination authentication plug-in, any password will be recognized as valid for an existing user.",
"id": "UBUNTU-CVE-2021-40874",
"modified": "2026-05-20T14:53:33Z",
"published": "2022-07-18T00:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-40874"
},
{
"type": "REPORT",
"url": "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2612"
},
{
"type": "REPORT",
"url": "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/commit/66946e8f754812b375768c2124937137c856fe0c"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-40874"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-40874"
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
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