PT-2023-5645 · Cisco · Cisco Ios Xe

Published 2023-08-27 · Updated 2024-01-25 · CVE-2023-20227

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 Layer 2 Tunneling Protocol (L2TP) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of certain L2TP packets. An attacker could exploit this vulnerability by sending crafted L2TP packets to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly, resulting in a DoS condition. Note that only traffic directed to the affected system can be used to exploit this vulnerability.

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

DoS

Improper Resource Release

Weakness Enumeration

CWE-388

CWE-404

Related Identifiers

BDU:2023-06305

CVE-2023-20227

Affected Products

Cisco Ios Xe

References · 8

• https://osv.dev/vulnerability/CVE-2023-20227 · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-l2tp-dos-eB5tuFmV · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-06305 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-20227 · Security Note
• https://t.me/cibsecurity/71146 · Telegram Post
• https://vuldb.com/ru/?id.240721 · Note
• https://twitter.com/VulmonFeeds/status/1707139383550177373 · Twitter Post
• https://twitter.com/CVEnew/status/1707087604296957965 · Twitter Post