PT-2023-2111 · Cisco · Cisco Ios Xe+1

CVE-2023-20080 · Published 2023-03-22 · Updated 2023-03-31

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 and IOS XE Software (affected versions not specified)

Description The issue is related to insufficient validation of data boundaries in the IPv6 DHCP version 6 (DHCPv6) relay and server features. This could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition by sending crafted DHCPv6 messages to an affected device, potentially causing the device to reload unexpectedly.

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

DoS

Improper Validation of Array Index

Weakness Enumeration

CWE-129

Related Identifiers

BDU:2023-01848

CVE-2023-20080

Affected Products

Cisco Ios

Cisco Ios Xe

References · 5

• https://bdu.fstec.ru/vul/2023-01848 · Security Note
• https://osv.dev/vulnerability/CVE-2023-20080 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-20080 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-dhcpv6-dos-44cMvdDK · Vendor Advisory
• https://t.me/true_secator/4210 · Telegram Post