CVE-2021-1379

Multiple vulnerabilities in the Cisco Discovery Protocol and Link Layer Discovery Protocol (LLDP) implementations for Cisco IP Phone Series 68xx/78xx/88xx could allow an unauthenticated, adjacent attacker to execute code remotely or cause a reload of an affected IP phone. These vulnerabilities are due to missing checks when the IP phone processes a Cisco Discovery Protocol or LLDP packet. An attacker could exploit these vulnerabilities by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted IP phone. A successful exploit could allow the attacker to execute code on the affected IP phone or cause it to reload unexpectedly, resulting in a denial of service (DoS) condition.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

• cisco ip conference phone 7832 firmware (< 12.8\(1\)) • cisco ip conference phone 7832 firmware 12.8\(1\) • cisco ip conference phone 7832 with multiplatform firmware (< 11.3\(2\)) • cisco ip conference phone 8832 firmware (< 12.8\(1\)) • cisco ip conference phone 8832 firmware 12.8\(1\) • cisco ip conference phone 8832 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 6821 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 6841 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 6851 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 6861 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 6871 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 7811 firmware (< 12.8\(1\)) • cisco ip phone 7811 firmware 12.8\(1\) • cisco ip phone 7811 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 7821 firmware (< 12.8\(1\)) • cisco ip phone 7821 firmware 12.8\(1\) • cisco ip phone 7821 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 7841 firmware (< 12.8\(1\)) • cisco ip phone 7841 firmware 12.8\(1\) • cisco ip phone 7841 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 7861 firmware (< 12.8\(1\)) • cisco ip phone 7861 firmware 12.8\(1\) • cisco ip phone 7861 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 8811 firmware (< 12.8\(1\)) • cisco ip phone 8811 firmware 12.8\(1\) • cisco ip phone 8811 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 8841 firmware (< 12.8\(1\)) • cisco ip phone 8841 firmware 12.8\(1\) • cisco ip phone 8841 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 8851 firmware (< 12.8\(1\)) • cisco ip phone 8851 firmware 12.8\(1\) • cisco ip phone 8851 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 8861 firmware (< 12.8\(1\)) • cisco ip phone 8861 firmware 12.8\(1\) • cisco ip phone 8861 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 8845 firmware (< 12.8\(1\)) • cisco ip phone 8845 firmware 12.8\(1\) • cisco ip phone 8845 with multiplatform firmware (< 11.3\(2\)) • cisco ip phone 8865 firmware (< 12.8\(1\)) • cisco ip phone 8865 firmware 12.8\(1\) • cisco ip phone 8865 with multiplatform firmware (< 11.3\(2\)) • cisco unified ip conference phone 8831 firmware (< 10.3\(1\)) • cisco unified ip conference phone 8831 firmware 10.3\(1\) • cisco unified ip conference phone 8831 for third-party call control firmware • cisco wireless ip phone 8821 firmware (< 11.0\(6.6\)) • cisco wireless ip phone 8821-ex firmware (< 11.0\(6.6\)) • cisco spa525g firmware