PT-2023-2502 · Cisco · Cisco Ios+3

X.B · Published 2023-03-22 · Updated 2023-08-16 · CVE-2023-20081

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Adaptive Security Appliance (ASA) Software (affected versions not specified) Cisco Firepower Threat Defense (FTD) Software (affected versions not specified) Cisco IOS Software (affected versions not specified) Cisco IOS XE Software (affected versions not specified)

Description A vulnerability in the IPv6 DHCP (DHCPv6) client module could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of DHCPv6 messages. An attacker could exploit this vulnerability by sending crafted DHCPv6 messages to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. To successfully exploit this vulnerability, the attacker would need to either control the DHCPv6 server or be in a man-in-the-middle position.

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

DoS

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-122

Related Identifiers

BDU:2023-02296

CVE-2023-20081

Affected Products

Cisco Asa

Cisco Ftd

Cisco Ios

Cisco Ios Xe

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2023-20081 · Security Note
• https://osv.dev/vulnerability/CVE-2023-20081 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-02296 · Security Note
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftdios-dhcpv6-cli-Zf3zTv · Vendor Advisory
• https://t.me/cvenotify/56627 · Telegram Post