Debian DLA-3287-1 : lemonldap-ng - LTS security update

high Nessus Plugin ID 170758


The remote Debian host is missing one or more security-related updates.


The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3287 advisory.

- In LemonLDAP::NG (aka lemonldap-ng) through 2.0.8, validity of the X.509 certificate is not checked by default when connecting to remote LDAP backends, because the default configuration of the Net::LDAPS module for Perl is used. (CVE-2020-16093)

- In LemonLDAP::NG before 2.0.15. some sessions are not deleted when they are supposed to be deleted according to the timeoutActivity setting. This can occur when there are at least two servers, and a session is manually removed before the time at which it would have been removed automatically.

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


Upgrade the lemonldap-ng packages.

For Debian 10 buster, these problems have been fixed in version 2.0.2+ds-7+deb10u8.

See Also

Plugin Details

Severity: High

ID: 170758

File Name: debian_DLA-3287.nasl

Version: 1.2

Type: local

Agent: unix

Published: 1/28/2023

Updated: 9/5/2023

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

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2020-16093


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

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: 1/28/2023

Vulnerability Publication Date: 7/18/2022

Reference Information

CVE: CVE-2020-16093, CVE-2022-37186