CVE-2024-20294

A vulnerability in the Link Layer Discovery Protocol (LLDP) feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of specific fields in an LLDP frame. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface of an affected device and having an authenticated user retrieve LLDP statistics from the affected device through CLI show commands or Simple Network Management Protocol (SNMP) requests. A successful exploit could allow the attacker to cause the LLDP service to crash and stop running on the affected device. In certain situations, the LLDP crash may result in a reload of the affected device. Note: LLDP is a Layer 2 link protocol. To exploit this vulnerability, an attacker would need to be directly connected to an interface of an affected device, either physically or logically (for example, through a Layer 2 Tunnel configured to transport the LLDP protocol). It has a CVSS v3.1 base score of 6.6 (MEDIUM).

CVE-2024-20294 has a CVSS v3.1 score of 6.6 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

CVE-2024-20294 affects products from cisco, specifically: firepower_4110, firepower_4112, firepower_4115, firepower_4120, firepower_4125, firepower_4140, firepower_4145, firepower_4150, firepower_9300_sm-24, firepower_9300_sm-36, firepower_9300_sm-40, firepower_9300_sm-44, firepower_9300_sm-48, firepower_9300_sm-56, firepower_extensible_operating_system, mds_9132t, mds_9134, mds_9140, mds_9148, mds_9148s, mds_9148t, mds_9200, mds_9216, mds_9216a, mds_9216i, mds_9222i, mds_9250i, mds_9396s, mds_9396t, mds_9500, mds_9506, mds_9509, mds_9513, mds_9700, mds_9706, mds_9710, mds_9718, nexus_3016, nexus_3016q, nexus_3048, nexus_3064, nexus_3064-32t, nexus_3064-t, nexus_3064-x, nexus_3064t, nexus_3064x, nexus_3100, nexus_3100-v, nexus_3100-z, nexus_3100v, nexus_31108pc-v, nexus_31108pv-v, nexus_31108tc-v, nexus_31128pq, nexus_3132c-z, nexus_3132q, nexus_3132q-v, nexus_3132q-x, nexus_3132q-x\/3132q-xl, nexus_3132q-xl, nexus_3164q, nexus_3172, nexus_3172pq, nexus_3172pq-xl, nexus_3172pq\/pq-xl, nexus_3172tq, nexus_3172tq-32t, nexus_3172tq-xl, nexus_3200, nexus_3232, nexus_3232c, nexus_3232c_, nexus_3264c-e, nexus_3264q, nexus_3400, nexus_3408-s, nexus_34180yc, nexus_34200yc-sm, nexus_3432d-s, nexus_3464c, nexus_3500, nexus_3500_platform, nexus_3524, nexus_3524-x, nexus_3524-x\/xl, nexus_3524-xl, nexus_3548, nexus_3548-x, nexus_3548-x\/xl, nexus_3548-xl, nexus_3600, nexus_36180yc-r, nexus_3636c-r, nexus_5548p, nexus_5548up, nexus_5596t, nexus_5596up, nexus_56128p, nexus_5624q, nexus_5648q, nexus_5672up, nexus_5672up-16g, nexus_5696q, nexus_6000, nexus_6001, nexus_6001p, nexus_6001t, nexus_6004, nexus_6004x, nexus_7000, nexus_7000_10-slot, nexus_7000_18-slot, nexus_7000_4-slot, nexus_7000_9-slot, nexus_7000_supervisor_1, nexus_7000_supervisor_2, nexus_7000_supervisor_2e, nexus_7004, nexus_7009, nexus_7010, nexus_7018, nexus_7700, nexus_7700_10-slot, nexus_7700_18-slot, nexus_7700_2-slot, nexus_7700_6-slot, nexus_7700_supervisor_2e, nexus_7700_supervisor_3e, nexus_7702, nexus_7706, nexus_7710, nexus_7718, nexus_9000v, nexus_9200, nexus_9200yc, nexus_92160yc-x, nexus_92160yc_switch, nexus_9221c, nexus_92300yc, nexus_92300yc_switch, nexus_92304qc, nexus_92304qc_switch, nexus_9232e, nexus_92348gc-x, nexus_9236c, nexus_9236c_switch, nexus_9272q, nexus_9272q_switch, nexus_9300, nexus_93108tc-ex, nexus_93108tc-ex-24, nexus_93108tc-ex_switch, nexus_93108tc-fx, nexus_93108tc-fx-24, nexus_93108tc-fx3, nexus_93108tc-fx3h, nexus_93108tc-fx3p, nexus_93120tx, nexus_93120tx_switch, nexus_93128, nexus_93128tx, nexus_93128tx_switch, nexus_9316d-gx, nexus_93180lc-ex, nexus_93180lc-ex_switch, nexus_93180tc-ex, nexus_93180yc-ex, nexus_93180yc-ex-24, nexus_93180yc-ex_switch, nexus_93180yc-fx, nexus_93180yc-fx-24, nexus_93180yc-fx3, nexus_93180yc-fx3h, nexus_93180yc-fx3s, nexus_93216tc-fx2, nexus_93240tc-fx2, nexus_93240yc-fx2, nexus_9332c, nexus_9332d-gx2b, nexus_9332d-h2r, nexus_9332pq, nexus_9332pq_switch, nexus_93360yc-fx2, nexus_9336c-fx2, nexus_9336c-fx2-e, nexus_9336pq, nexus_9336pq_aci, nexus_9336pq_aci_spine, nexus_9336pq_aci_spine_switch, nexus_93400ld-h1, nexus_9348d-gx2a, nexus_9348gc-fx3, nexus_9348gc-fx3ph, nexus_9348gc-fxp, nexus_93600cd-gx, nexus_9364c, nexus_9364c-gx, nexus_9364c-h1, nexus_9364d-gx2a, nexus_9372px, nexus_9372px-e, nexus_9372px-e_switch, nexus_9372px_switch, nexus_9372tx, nexus_9372tx-e, nexus_9372tx-e_switch, nexus_9372tx_switch, nexus_9396px, nexus_9396px_switch, nexus_9396tx, nexus_9396tx_switch, nexus_9408, nexus_9432pq, nexus_9500, nexus_9500_16-slot, nexus_9500_4-slot, nexus_9500_8-slot, nexus_9500_supervisor_a, nexus_9500_supervisor_a\+, nexus_9500_supervisor_b, nexus_9500_supervisor_b\+, nexus_9500r, nexus_9504, nexus_9504_switch, nexus_9508, nexus_9508_switch, nexus_9516, nexus_9516_switch, nexus_9536pq, nexus_9636pq, nexus_9716d-gx, nexus_9736pq, nexus_9800, nexus_9804, nexus_9808, nx-os, ucs_6248_up, ucs_6248up, ucs_6296_up, ucs_6296up, ucs_6324, ucs_6332, ucs_6332-16up, ucs_64108, ucs_6454, ucs_6536, unified_computing_system. Check the affected products table above for specific version ranges.

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