An issue was discovered in LemonLDAP::NG through 2.0.8, when NGINX is used. An attacker may bypass URL-based access control to protected Virtual Hosts by submitting a non-normalized URI. This also affects versions before 0.5.2 of the "Lemonldap::NG handler for Node.js" package.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An issue was discovered in LemonLDAP::NG through 2.0.8, when NGINX is used. An attacker may bypass URL-     based access control to protected Virtual Hosts by submitting a non-normalized URI. This also affects     versions before 0.5.2 of the Lemonldap::NG handler for Node.js package. (CVE-2020-24660)

Note that Nessus relies on the presence of the package as reported by the vendor.

It was discovered that the default configuration files for running the Lemonldap::NG Web SSO system on the Nginx web server were susceptible to authorisation bypass of URL access rules. The Debian packages do not use Nginx by default.

lemonldap-ng community fixed a vulnerability in the Nginx default configuration files (CVE-2020-24660). Debian package does not install any default site, but documentation provided insecure examples in Nginx configuration before this version. If you use lemonldap-ng handler with Nginx, you should verify your configuration files.

For Debian 9 stretch, this problem has been fixed in version 1.9.7-3+deb9u4.

We recommend that you upgrade your lemonldap-ng packages.

For the detailed security status of lemonldap-ng please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/lemonldap-ng

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
252484	Linux Distros Unpatched Vulnerability : CVE-2020-24660	Nessus	Misc.	critical
140303	Debian DSA-4762-1 : lemonldap-ng - security update	Nessus	Debian Local Security Checks	critical
140298	Debian DLA-2367-1 : lemonldap-ng security update	Nessus	Debian Local Security Checks	critical

Detections

Analytics

CVE-2020-24660

critical

Tenable Plugins

critical

critical

critical