PT-2022-2304 · Cisco · Cisco Ios Xe

Published 2022-04-13 · Updated 2023-05-22 · CVE-2022-20678

Positive Technologies (AI Summary)

CVSS v3.1

8.6

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS XE Software (affected versions not specified)

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

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

CWE-413

Related Identifiers

BDU:2022-02489

CVE-2022-20678

Affected Products

Cisco Ios Xe

References · 8

• https://bdu.fstec.ru/vul/2022-02489 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-20678 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-xe-dos-j5MXTR4 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-20678 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/678256 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-appnav-xe-dos-j5MXTR4 · Vendor Advisory
• https://t.me/cvenotify/29011 · Telegram Post
• https://t.me/cibsecurity/40872 · Telegram Post