QID 317316

QID 317316: Cisco Internetwork Operating System (IOS) Software Internet Protocol (IPv6) DHCP (DHCPv6) Client Denial of Service (DoS) Vulnerability (cisco-sa-asaftdios-dhcpv6-cli-Zf3zTv)

A vulnerability in the IPv6 DHCP (DHCPv6) client module of Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.

Affected Products:
Cisco IOS Software

NOTE:
This vulnerability affects those devices that are having at least one interface with both IPv6 enabled and the DHCPv6 client feature enabled.

QID Detection Logic (Authenticated):
The check matches Cisco IOS version retrieved via Unix Auth using "show version" command.
QID Detection Logic (Unauthenticated):
The check matches Cisco IOS version retrieved via SNMP or TCP/IP Fingerprint or NTP or Telnet.

Successful exploitation of this vulnerability may allow an unauthenticated remote attacker to cause the device to reload, resulting in a DoS condition.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution

    Customers are advised to refer to cisco-sa-asaftdios-dhcpv6-cli-Zf3zTv for more information.

    Vendor References

    CVEs related to QID 317316

    CVE-2023-20081 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-asaftdios-dhcpv6-cli-Zf3zTv URL Logo sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftdios-dhcpv6-cli-Zf3zTv
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