Vulnerability Monitor

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CVE-2019-1684

A vulnerability in the Cisco Discovery Protocol or Link Layer Discovery Protocol (LLDP) implementation for the Cisco IP Phone 7800 and 8800 Series could allow an unauthenticated, adjacent attacker to cause an affected phone to reload unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to missing length validation of certain Cisco Discovery Protocol or LLDP packet header fields. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol or LLDP packet to the targeted phone. A successful exploit could allow the attacker to cause the affected phone to reload unexpectedly, resulting in a temporary DoS condition. Versions prior to 12.6(1)MN80 are affected.

Published

2019-02-21T20:29:00.337

Last Modified

2024-11-21T04:37:05.597

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

6.5

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-399
  • Type: Primary
    CWE-119
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ip_phone_8800_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_8800 - No
Operating System cisco ip_phone_7800_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_7800 - No
Operating System cisco ip_conference_phone_7832_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_conference_phone_7832 - No
Operating System cisco ip_conference_phone_8832_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_conference_phone_8832 - No
Operating System cisco ip_phone_7811_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_7811 - No
Operating System cisco ip_phone_7821_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_7821 - No
Operating System cisco ip_phone_7841_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_7841 - No
Operating System cisco ip_phone_7861_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_7861 - No
Operating System cisco ip_phone_8811_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_8811 - No
Operating System cisco ip_phone_8841_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_8841 - No
Operating System cisco ip_phone_8845_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_8845 - No
Operating System cisco ip_phone_8851_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_8851 - No
Operating System cisco ip_phone_8861_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_8861 - No
Operating System cisco ip_phone_8865_firmware < 12.6\(1\)mn80 Yes
Hardware cisco ip_phone_8865 - No
References