CVE-2021-40874 — CRITICAL (9.8)

Vulnerability 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 Score

9.8

CRITICAL

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

Affected Products

Vendor	Product	Versions
Lemonldap-Ng	Lemonldap\	\
Debian	Debian Linux	10.0

Related Weaknesses (CWE)

CWE-287

References

https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2612ExploitIssue TrackingPatch
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2612ExploitIssue TrackingPatch

FAQ

What is CVE-2021-40874?

CVE-2021-40874 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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) an...

How severe is CVE-2021-40874?

CVE-2021-40874 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-40874?

Check the references section above for vendor advisories and patch information. Affected products include: Lemonldap-Ng Lemonldap\, Debian Debian Linux.