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.

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-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 CIQ 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 AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1758729003 advisory.

  - 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. (CVE-2023-41910)

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

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2024-9355:03 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 MiracleLinux 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 version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0343 advisory.

    Package updates are available for TencentOS Server 4 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 Tencent 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 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.

  - 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. (CVE-2023-41910)

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 version of lldpd installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-41910 advisory.

  - 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. (CVE-2023-41910)

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 / 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-5505 advisory.

    Matteo Memelli reported an out-of-bounds read flaw when parsing CDP addresses in lldpd, an implementation     of the IEEE 802.1ab (LLDP) protocol. A remote attacker can take advantage of this flaw to cause a denial     of service via a specially crafted CDP PDU packet. For the oldstable distribution (bullseye), this problem     has been fixed in version 1.0.11-1+deb11u2. For the stable distribution (bookworm), this problem has been     fixed in version 1.0.16-1+deb12u1. 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

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.

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3578 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3578-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                      Markus Koschany     September 22, 2023                            https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : lldpd     Version        : 1.0.3-1+deb10u2     CVE ID         : CVE-2023-41910

    Matteo Memelli discovered a flaw in lldpd, an implementation of the IEEE     802.1ab protocol. 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.

    For Debian 10 buster, this problem has been fixed in version     1.0.3-1+deb10u2.

    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     Attachment:
    signature.asc     Description: This is a digitally signed message part

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.

ID	Name	Product	Family	Type	Severity
358538	Rocky Linux 9 [CIQ] Security Update: lldpd / lldpd-debuginfo / lldpd-debugsource / lldpd-devel Multiple Vulnerabilities (crlsa-2024_9158)	Nessus	Rocky Linux Local Security Checks	Local	critical
352954	AlmaLinux 9.2 [TuxCare] Security Update: lldpd / lldpd-devel (ALMALINUX9.2:CLSA-2025:1758729003)	Nessus	Alma Linux Local Security Checks	Local	critical
292180	MiracleLinux 9 : lldpd-1.0.18-4.el9 (AXSA:2024-9355:03)	Nessus	Miracle Linux Local Security Checks	Local	critical
238859	TencentOS Server 4: lldpd (TSSA-2024:0343)	Nessus	Tencent Local Security Checks	Local	critical
236149	Alibaba Cloud Linux 3 : 0256: lldpd (ALINUX3-SA-2024:0256)	Nessus	Alibaba Cloud Linux Local Security Checks	Local	critical
232903	RockyLinux 9 : lldpd (RLSA-2024:9158)	Nessus	Rocky Linux Local Security Checks	Local	critical
227220	Linux Distros Unpatched Vulnerability : CVE-2023-41910	Nessus	Misc.	Local	critical
211534	Oracle Linux 9 : lldpd (ELSA-2024-9158)	Nessus	Oracle Linux Local Security Checks	Local	critical
210792	RHEL 9 : lldpd (RHSA-2024:9158)	Nessus	Red Hat Local Security Checks	Local	critical
182142	CBL Mariner 2.0 Security Update: lldpd (CVE-2023-41910)	Nessus	MarinerOS Local Security Checks	Local	critical
181879	Debian DSA-5505-1 : lldpd - security update	Nessus	Debian Local Security Checks	Local	critical
181818	Debian dla-3578 : liblldpctl-dev - security update	Nessus	Debian Local Security Checks	Local	critical

Detections

Analytics

CVE-2023-41910

critical

Tenable Plugins

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical

critical