CVE-2021-40874

CRITICAL
Published Jul 18, 20223y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Jul 18, 2022 3y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-287 Improper Authentication Authentication

Affected Products 2

VendorProductVersionRange
lemonldap-nglemonldap\\any
debiandebian_linux10.0any

References 1

  • gitlab.ow2.org https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2612
    ExploitIssue TrackingPatchThird Party Advisory

Remediation

  • gitlab.ow2.org https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2612
    ExploitIssue TrackingPatchThird Party Advisory