An issue was discovered in LemonLDAP::NG before 2.20.1. An Improper Check during session refresh allows an authenticated user to raise their authentication level if the admin configured an "Adaptative authentication rule" with an increment instead of an absolute value.

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 before 2.20.1. An Improper Check during session refresh allows an     authenticated user to raise their authentication level if the admin configured an Adaptative     authentication rule with an increment instead of an absolute value. (CVE-2024-52946)

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

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0034 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2024-52946:
    An issue was discovered in LemonLDAP::NG before 2.20.1. An Improper Check during session refresh allows an     authenticated user to raise their authentication level if the admin configured an Adaptative     authentication rule with an increment instead of an absolute value.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3979 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3979-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     November 30, 2024                             https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : lemonldap-ng     Version        : 2.0.11+ds-4+deb11u6     CVE ID         : CVE-2024-48933 CVE-2024-52946 CVE-2024-52947     Debian Bug     : 1084979

    Multiple vulnerabilities were discovered in Lemonldap::NG, an     OpenID-Connect, CAS and SAML compatible Web-SSO system, which could lead     to injection of arbitrary scripts or authorization bypass.

    CVE-2024-48933

        Cross-site scripting (XSS) vulnerability which allows remote         attackers to inject arbitrary web script or HTML into the login page         via a username if userControl has been set to a non-default value         that allows special HTML characters.

    CVE-2024-52946

        Improper Check during session refresh which allows an authenticated         user to raise their authentication level if the admin configured an         Adaptative authentication rule with an increment instead of an         absolute value.

    CVE-2024-52947

        Cross-site scripting (XSS) vulnerability which allows remote         attackers to inject arbitrary web script or HTML via the url         parameter of the upgrade session confirmation page (upgradeSession)         if the Upgrade session plugin has been enabled by an admin.

    For Debian 11 bullseye, these problems have been fixed in version     2.0.11+ds-4+deb11u6.

    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

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
252459	Linux Distros Unpatched Vulnerability : CVE-2024-52946	Nessus	Misc.	high
239844	TencentOS Server 4: lemonldap-ng (TSSA-2025:0034)	Nessus	Tencent Local Security Checks	high
211976	Debian dla-3979 : lemonldap-ng - security update	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2024-52946

high

Tenable Plugins

high

high

medium