PT-2020-17253 · Cisco · Cisco Ios Xe

Published 2020-09-24 · Updated 2023-05-23 · CVE-2020-3508

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

AV:A/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 for Cisco ASR 1000 Series Aggregation Services Routers (affected versions not specified)

Description A vulnerability in the IP Address Resolution Protocol (ARP) feature could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service condition. The issue is due to insufficient error handling when an affected device has reached platform limitations. An attacker could exploit this by sending a malicious series of IP ARP messages to an affected device, potentially exhausting system resources and causing the device to reload.

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

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2020-3508

Affected Products

Cisco Ios Xe

References · 5

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esp20-arp-dos-GvHVggqJ · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-3508 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esp20-arp-dos-GvHVggqJ · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-3508 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/657130 · Security Note