QID 317369

Date Published: 2023-10-12

QID 317369: Cisco Internetwork Operating System (IOS) XE (IPv6) Multicast Denial of Service (DoS) Vulnerability (cisco-sa-mlre-H93FswRz)

A vulnerability in the Multicast Leaf Recycle Elimination (mLRE) feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

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

A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.8 severity.
    • Solution

    Customers are advised to refer to cisco-sa-mlre-H93FswRz for more information.

    Vendor References

    CVEs related to QID 317369

    CVE-2023-20187 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-mlre-H93FswRz URL Logo sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mlre-H93FswRz
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