PT-2020-4179 · Cisco · Cisco Ios Xe

Published 2020-09-24 · Updated 2023-05-22 · CVE-2020-3422

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 IP Service Level Agreement (SLA) responder feature could allow an unauthenticated, remote attacker to cause the IP SLA responder to reuse an existing port, resulting in a denial of service (DoS) condition. The vulnerability exists because the IP SLA responder could consume a port that could be used by another feature. An attacker could exploit this vulnerability by sending specific IP SLA control packets to the IP SLA responder on an affected device. The control packets must include the port number that could be used by another configured feature. A successful exploit could allow the attacker to cause an in-use port to be consumed by the IP SLA responder, impacting the feature that was using the port and resulting in a DoS condition.

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

DoS

Weakness Enumeration

CWE-371

Related Identifiers

BDU:2020-04601

CVE-2020-3422

Affected Products

Cisco Ios Xe

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2020-3422 · Security Note
• https://bdu.fstec.ru/vul/2020-04601 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsla-jw2DJmSv · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3422 · Vendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsla-jw2DJmSv · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/657130 · Security Note