ubuntu-cve-2023-28862
Vulnerability from osv_ubuntu
Published
2023-03-31 17:15
Modified
2025-10-24 05:01
Summary
Details
An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.
Severity
9.8 (Critical)
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"
]
}
],
"aliases": [],
"details": "An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.",
"id": "UBUNTU-CVE-2023-28862",
"modified": "2025-10-24T05:01:54Z",
"published": "2023-03-31T17:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-28862"
},
{
"type": "REPORT",
"url": "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/commit/aadbb02471bf2a5effd7590708edb8a180f27948"
},
{
"type": "REPORT",
"url": "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/merge_requests/334"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-28862"
}
],
"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": "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-2023-28862"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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