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.

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

  - 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)

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

The remote Debian 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-3285 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3285-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     January 28, 2023                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libapache-session-browseable-perl     Version        : 1.3.0-1+deb10u1     CVE ID         : CVE-2020-36659

    In Apache::Session::Browseable before 1.3.6, 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.

    This update changes the default behavior to require X.509 validation     against the distribution bundle /etc/ssl/certs/ca-certificates.crt.
    Previous behavior can reverted by setting `ldapVerify => none` when     initializing the Apache::Session::Browseable::LDAP object.

    NOTE: this update is a prerequisite for LemonLDAP::NG's CVE-2020-16093     fix when its session backend is set to Apache::Session::Browseable::LDAP.

    For Debian 10 buster, this problem has been fixed in version     1.3.0-1+deb10u1.

    We recommend that you upgrade your libapache-session-browseable-perl packages.

    For the detailed security status of libapache-session-browseable-perl please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libapache-session-browseable-perl

    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.

The remote Debian 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-3284 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3284-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     January 28, 2023                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : libapache-session-ldap-perl     Version        : 0.4-1+deb10u1     CVE ID         : CVE-2020-36658

    In Apache::Session::LDAP before 0.5, 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.

    This update changes the default behavior to require X.509 validation     against the distribution bundle /etc/ssl/certs/ca-certificates.crt.
    Previous behavior can reverted by setting `ldapVerify => none` when     initializing the Apache::Session::LDAP object.

    NOTE: this update is a prerequisite for LemonLDAP::NG's CVE-2020-16093     fix when its session backend is set to Apache::Session::LDAP.

    For Debian 10 buster, this problem has been fixed in version     0.4-1+deb10u1.

    We recommend that you upgrade your libapache-session-ldap-perl packages.

    For the detailed security status of libapache-session-ldap-perl please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/libapache-session-ldap-perl

    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.

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

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3287-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     January 28, 2023                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : lemonldap-ng     Version        : 2.0.2+ds-7+deb10u8     CVE ID         : CVE-2020-16093 CVE-2022-37186

    Two vulnerabilities were found in lemonldap-ng, an OpenID-Connect, CAS     and SAML compatible Web-SSO system, that could result in information     disclosure or impersonation.

    CVE-2020-16093

        Maxime Besson discovered that LemonLDAP::NG before 2.0.9 did not         check validity of the X.509 certificate by default when connecting         to remote LDAP backends, because the default configuration of the         Net::LDAPS module for Perl is used.

        This update changes the default behavior to require X.509 validation         against the distribution bundle /etc/ssl/certs/ca-certificates.crt.
        Previous behavior can reverted by running         `/usr/share/lemonldap-ng/bin/lemonldap-ng-cli set ldapVerify none`.

        If a session backend is set to Apache::Session::LDAP or         Apache::Session::Browseable::LDAP, then the complete fix involves         upgrading the corresponding Apache::Session module         (libapache-session-ldap-perl resp. libapache-session-browseable-perl)         to 0.4-1+deb10u1 (or 0.5) resp. 1.3.0-1+deb10u1 (or 1.3.8).  See         related advisories DLA-3284-1 and DLA-3285-1 for details.

    CVE-2022-37186

        Mickael Bride discovered that under certain conditions the session         remained valid on handlers after being destroyed on portal.

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

    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
252485	Linux Distros Unpatched Vulnerability : CVE-2020-16093	Nessus	Misc.	high
170889	Debian dla-3285 : libapache-session-browseable-perl - security update	Nessus	Debian Local Security Checks	high
170887	Debian dla-3284 : libapache-session-ldap-perl - security update	Nessus	Debian Local Security Checks	high
170758	Debian dla-3287 : lemonldap-ng - security update	Nessus	Debian Local Security Checks	high

Detections

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CVE-2020-16093

high

Tenable Plugins

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