Vulnerability Monitor

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CVE-2022-20678

A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of certain TCP segments. An attacker could exploit this vulnerability by sending a stream of crafted TCP traffic at a high rate through an interface of an affected device. That interface would need to have AppNav interception enabled. A successful exploit could allow the attacker to cause the device to reload.

Published

2022-04-15T15:15:12.467

Last Modified

2024-11-21T06:43:18.097

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (HIGH)

CVSSv2 Vector

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

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

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-413
  • Type: Primary
    CWE-755
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios_xe 16.9.6 Yes
Operating System cisco ios_xe 16.12.4 Yes
Operating System cisco ios_xe 16.12.5 Yes
Operating System cisco ios_xe 17.3.3 Yes
Application cisco catalyst_8000v_edge - No
Application cisco cloud_services_router_1000v - No
Hardware cisco 1100-4g_integrated_services_router - No
Hardware cisco 1100-6g_integrated_services_router - No
Hardware cisco 1101_integrated_services_router - No
Hardware cisco 1109_integrated_services_router - No
Hardware cisco 1111x_integrated_services_router - No
Hardware cisco 111x_integrated_services_router - No
Hardware cisco 1120_integrated_services_router - No
Hardware cisco 1131_integrated_services_router - No
Hardware cisco 1160_integrated_services_router - No
Hardware cisco 4221_integrated_services_router - No
Hardware cisco 4331_integrated_services_router - No
Hardware cisco 4431_integrated_services_router - No
Hardware cisco 4461_integrated_services_router - No
Hardware cisco asr_1001-x - No
Hardware cisco asr_1002-x - No
Hardware cisco catalyst_8300-1n1s-4t2x - No
Hardware cisco catalyst_8300-1n1s-6t - No
Hardware cisco catalyst_8300-2n2s-4t2x - No
Hardware cisco catalyst_8300-2n2s-6t - No
Hardware cisco catalyst_8500 - No
Hardware cisco catalyst_8500-4qc - No
Hardware cisco catalyst_8500l - No
References