CVE-2022-20678 : A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an

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 2022-04-15 15:15:12

Updated 2023-05-22 18:57:25

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2022-20678

Cisco » Ios Xe » Version: 16.9.6
cpe:2.3:o:cisco:ios_xe:16.9.6:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 8000v Edge » Version: N/A
When used together with: Cisco » Cloud Services Router 1000v » Version: N/A
When used together with: Cisco » 1100-4g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-6g Integrated Services Router » Version: N/A
When used together with: Cisco » 1101 Integrated Services Router » Version: N/A
When used together with: Cisco » 1109 Integrated Services Router » Version: N/A
When used together with: Cisco » 1111x Integrated Services Router » Version: N/A
When used together with: Cisco » 111x Integrated Services Router » Version: N/A
When used together with: Cisco » 1120 Integrated Services Router » Version: N/A
When used together with: Cisco » 1131 Integrated Services Router » Version: N/A
When used together with: Cisco » 1160 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4461 Integrated Services Router » Version: N/A
When used together with: Cisco » Asr 1001-x » Version: N/A
When used together with: Cisco » Asr 1002-x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-6t » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-6t » Version: N/A
When used together with: Cisco » Catalyst 8500 » Version: N/A
When used together with: Cisco » Catalyst 8500-4qc » Version: N/A
When used together with: Cisco » Catalyst 8500l » Version: N/A
Cisco » Ios Xe » Version: 16.12.4
cpe:2.3:o:cisco:ios_xe:16.12.4:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 8000v Edge » Version: N/A
When used together with: Cisco » Cloud Services Router 1000v » Version: N/A
When used together with: Cisco » 1100-4g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-6g Integrated Services Router » Version: N/A
When used together with: Cisco » 1101 Integrated Services Router » Version: N/A
When used together with: Cisco » 1109 Integrated Services Router » Version: N/A
When used together with: Cisco » 1111x Integrated Services Router » Version: N/A
When used together with: Cisco » 111x Integrated Services Router » Version: N/A
When used together with: Cisco » 1120 Integrated Services Router » Version: N/A
When used together with: Cisco » 1131 Integrated Services Router » Version: N/A
When used together with: Cisco » 1160 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4461 Integrated Services Router » Version: N/A
When used together with: Cisco » Asr 1001-x » Version: N/A
When used together with: Cisco » Asr 1002-x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-6t » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-6t » Version: N/A
When used together with: Cisco » Catalyst 8500 » Version: N/A
When used together with: Cisco » Catalyst 8500-4qc » Version: N/A
When used together with: Cisco » Catalyst 8500l » Version: N/A
Cisco » Ios Xe » Version: 16.12.5
cpe:2.3:o:cisco:ios_xe:16.12.5:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 8000v Edge » Version: N/A
When used together with: Cisco » Cloud Services Router 1000v » Version: N/A
When used together with: Cisco » 1100-4g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-6g Integrated Services Router » Version: N/A
When used together with: Cisco » 1101 Integrated Services Router » Version: N/A
When used together with: Cisco » 1109 Integrated Services Router » Version: N/A
When used together with: Cisco » 1111x Integrated Services Router » Version: N/A
When used together with: Cisco » 111x Integrated Services Router » Version: N/A
When used together with: Cisco » 1120 Integrated Services Router » Version: N/A
When used together with: Cisco » 1131 Integrated Services Router » Version: N/A
When used together with: Cisco » 1160 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4461 Integrated Services Router » Version: N/A
When used together with: Cisco » Asr 1001-x » Version: N/A
When used together with: Cisco » Asr 1002-x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-6t » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-6t » Version: N/A
When used together with: Cisco » Catalyst 8500 » Version: N/A
When used together with: Cisco » Catalyst 8500-4qc » Version: N/A
When used together with: Cisco » Catalyst 8500l » Version: N/A
Cisco » Ios Xe » Version: 17.3.3
cpe:2.3:o:cisco:ios_xe:17.3.3:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 8000v Edge » Version: N/A
When used together with: Cisco » Cloud Services Router 1000v » Version: N/A
When used together with: Cisco » 1100-4g Integrated Services Router » Version: N/A
When used together with: Cisco » 1100-6g Integrated Services Router » Version: N/A
When used together with: Cisco » 1101 Integrated Services Router » Version: N/A
When used together with: Cisco » 1109 Integrated Services Router » Version: N/A
When used together with: Cisco » 1111x Integrated Services Router » Version: N/A
When used together with: Cisco » 111x Integrated Services Router » Version: N/A
When used together with: Cisco » 1120 Integrated Services Router » Version: N/A
When used together with: Cisco » 1131 Integrated Services Router » Version: N/A
When used together with: Cisco » 1160 Integrated Services Router » Version: N/A
When used together with: Cisco » 4221 Integrated Services Router » Version: N/A
When used together with: Cisco » 4331 Integrated Services Router » Version: N/A
When used together with: Cisco » 4431 Integrated Services Router » Version: N/A
When used together with: Cisco » 4461 Integrated Services Router » Version: N/A
When used together with: Cisco » Asr 1001-x » Version: N/A
When used together with: Cisco » Asr 1002-x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-1n1s-6t » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-4t2x » Version: N/A
When used together with: Cisco » Catalyst 8300-2n2s-6t » Version: N/A
When used together with: Cisco » Catalyst 8500 » Version: N/A
When used together with: Cisco » Catalyst 8500-4qc » Version: N/A
When used together with: Cisco » Catalyst 8500l » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2022-20678

EPSS FAQ

0.14%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 51 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-20678

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.8	HIGH	AV:N/AC:L/Au:N/C:N/I:N/A:C	10.0	6.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
8.6	HIGH	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	3.9	4.0	Cisco Systems, Inc.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: None Availability: High
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2022-20678

CWE-413 Improper Resource Locking

The product does not lock or does not correctly lock a resource when the product must have exclusive access to the resource.

Assigned by: ykramarz@cisco.com (Secondary)
CWE-755 Improper Handling of Exceptional Conditions

The product does not handle or incorrectly handles an exceptional condition.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-20678

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-xe-dos-j5MXTR4

Cisco IOS XE Software AppNav-XE Denial of Service Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2022-20678

Products affected by CVE-2022-20678

Exploit prediction scoring system (EPSS) score for CVE-2022-20678

CVSS scores for CVE-2022-20678

CWE ids for CVE-2022-20678

References for CVE-2022-20678