Debian dla-3496 : lemonldap-ng - security update

critical Nessus Plugin ID 178300

Language:

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3496 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-3496-1 [email protected] https://www.debian.org/lts/security/ Guilhem Moulin July 14, 2023 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : lemonldap-ng Version : 2.0.2+ds-7+deb10u9 CVE ID : CVE-2023-28862

Issues were discovered in Lemonldap::NG, an OpenID-Connect, CAS and SAML compatible Web-SSO system, which could lead to impersonation of users with a second factor authentication.

Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.

Using the AuthBasic handler is now refused for users with a second factor. Admins who are *absolutely sure* that such accounts should be able to use AuthBasic handlers (which are password only) can append `and not $ENV{AuthBasic}` to the 2FA activation rules.

For Debian 10 buster, these problems have been fixed in version 2.0.2+ds-7+deb10u9.

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 this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the lemonldap-ng packages.

Plugin Details

Severity: Critical

ID: 178300

File Name: debian_DLA-3496.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/14/2023

Updated: 1/22/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2023-28862

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:lemonldap-ng, p-cpe:/a:debian:debian_linux:liblemonldap-ng-portal-perl, p-cpe:/a:debian:debian_linux:lemonldap-ng-handler, p-cpe:/a:debian:debian_linux:liblemonldap-ng-manager-perl, p-cpe:/a:debian:debian_linux:lemonldap-ng-fastcgi-server, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:liblemonldap-ng-handler-perl, p-cpe:/a:debian:debian_linux:lemonldap-ng-uwsgi-app, p-cpe:/a:debian:debian_linux:liblemonldap-ng-common-perl, p-cpe:/a:debian:debian_linux:lemonldap-ng-doc

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/14/2023

Vulnerability Publication Date: 3/31/2023

Reference Information

CVE: CVE-2023-28862

Detections

Analytics