CVE-2022-20678

CVSS V2 High 7.8 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2022-20678
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-04-15T15:15:12
  • Last Modified Date
  • 2022-04-25T15:28:22
Weakness Enumerations
CWE URL
CWE-755 http://cwe.mitre.org/data/definitions/755.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ios_xe:16.9.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.12.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:16.12.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:cisco:ios_xe:17.3.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:cisco:catalyst_8000v_edge:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:a:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:catalyst_8300-1n1s-4t2x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:catalyst_8300-1n1s-6t:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:catalyst_8300-2n2s-4t2x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:catalyst_8300-2n2s-6t:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:catalyst_8500:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:catalyst_8500-4qc:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:catalyst_8500l:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100-4g:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1100-6g:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1131:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:* 0 OR
cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.8
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-xe-dos-j5MXTR4 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2022-20678
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-20678
History
Created Old Value New Value Data Type Notes
2022-05-10 06:26:58 Added to TrackCVE