VulnerabilityModified

CVE-2021-40874

An issue was discovered in LemonLDAP::NG (aka lemonldap-ng) 2.0.13.

CRITICAL 9.8EPSS 1.08%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.08% probability · 63th percentile
CISA KEV: Not listed
Weakness: CWE-287
Affected: lemonldap-ng/lemonldap\ · debian/debian linux
Source: cve@mitre.org

References

https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2612Exploit, Issue Tracking, Patch, Third Party Advisory
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2612Exploit, Issue Tracking, Patch, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.