In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0256 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2020-27827:
    A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to     be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service.
    The highest threat from this vulnerability is to system availability.

    CVE-2021-43612:
    In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger     an out-of-bounds heap read via short SONMP packets.

    CVE-2023-41910:
    An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific     CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds     read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux 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 RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:9158 advisory.

    * lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827)

    * lldpd: out-of-bounds read when decoding SONMP packets (CVE-2021-43612)

    * lldpd: CDP PDU Packet cdp.c out-of-bounds read (CVE-2023-41910)

Tenable has extracted the preceding description block directly from the RockyLinux 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger     an out-of-bounds heap read via short SONMP packets. (CVE-2021-43612)

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

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-9158 advisory.

    [1.0.18-3]
    - Add lldpd-devel package [RHEL-22127]

    [1.0.18-2]
    - Remove networkd gating test [RHEL-25990]

Tenable has extracted the preceding description block directly from the Oracle Linux 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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:9158 advisory.

    LLDP is an industry standard protocol designed to supplant proprietary Link-Layer protocols such as EDP or     CDP. The goal of LLDP is to provide an inter-vendor compatible mechanism to deliver Link-Layer     notifications to adjacent network devices.

    Security Fix(es):

    * lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827)

    * lldpd: out-of-bounds read when decoding SONMP packets (CVE-2021-43612)

    * lldpd: CDP PDU Packet cdp.c out-of-bounds read (CVE-2023-41910)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.5 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-88991d2713 advisory.

    Update to the latest 1.0.16:

    * Lots of updates, enhancements and fixes from 1.0.4
    * CVEs: CVE-2020-27827, CVE-2021-43612

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-3e4feeadec advisory.

    Update to the latest 1.0.16:

    * Lots of updates, enhancements and fixes from 1.0.4
    * CVEs: CVE-2020-27827, CVE-2021-43612

Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-c0c184a019 advisory.

    Update to the latest 1.0.16:

    * Lots of updates, enhancements and fixes from 1.0.4
    * CVEs: CVE-2020-27827, CVE-2021-43612

Tenable has extracted the preceding description block directly from the Fedora 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-3389 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3389-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                           Chris Lamb     April 10, 2023                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : lldpd     Version        : 1.0.3-1+deb10u1     CVE IDs        : CVE-2020-27827 CVE-2021-43612     Debian Bug     : 980132

    * The following was previously incorrectly announced to this list *
    * as DLA-3388-1. The correct DLA identifier for this advisory is  *
    * DLA-3389-1.                                                     *

    It was discovered that there were two potential denial of service     (DoS) attacks in lldpd, a implementation of the IEEE 802.1ab (LLDP)     protocol used to administer and monitor networking devices.

    For Debian 10 buster, these problems have been fixed in version     1.0.3-1+deb10u1.

    We recommend that you upgrade your lldpd packages.

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

    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

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
236149	Alibaba Cloud Linux 3 : 0256: lldpd (ALINUX3-SA-2024:0256)	Nessus	Alibaba Cloud Linux Local Security Checks	critical
232903	RockyLinux 9 : lldpd (RLSA-2024:9158)	Nessus	Rocky Linux Local Security Checks	critical
224183	Linux Distros Unpatched Vulnerability : CVE-2021-43612	Nessus	Misc.	high
211534	Oracle Linux 9 : lldpd (ELSA-2024-9158)	Nessus	Oracle Linux Local Security Checks	critical
210792	RHEL 9 : lldpd (RHSA-2024:9158)	Nessus	Red Hat Local Security Checks	critical
174525	Fedora 38 : lldpd (2023-88991d2713)	Nessus	Fedora Local Security Checks	high
174509	Fedora 36 : lldpd (2023-3e4feeadec)	Nessus	Fedora Local Security Checks	high
174490	Fedora 37 : lldpd (2023-c0c184a019)	Nessus	Fedora Local Security Checks	high
174170	Debian dla-3389 : liblldpctl-dev - security update	Nessus	Debian Local Security Checks	high

Detections

Analytics

CVE-2021-43612

high

Tenable Plugins

critical

critical

high

critical

critical

high

high

high

high