QID 317439

Date Published: 2024-04-11

QID 317439: Cisco Internetwork Operating System (IOS) and Internetwork Operating System (IOS) XE Software Denial of Service (DoS) Vulnerability (cisco-sa-isis-sGjyOUHX)

A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.

Affected Products:
This vulnerability affects Cisco platforms if they are running a vulnerable release of Cisco IOS or IOS XE Software, are configured for the IS-IS routing protocol, and perform as a Level 1 or Level 1-2 router.

QID Detection Logic (Authenticated):
The check matches Cisco IOS and IOS XE version retrieved via Unix Auth using "show version" command.
QID Detection Logic (Unauthenticated):
The check matches Cisco IOS and IOS XE version retrieved via SNMP or TCP/IP Fingerprint or NTP or Telnet.
Note: This QID does not check for IS-IS area authentication configuration. Hence set as Practice

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

  • CVSS V3 rated as High - 7.4 severity.
  • CVSS V2 rated as High - 6.1 severity.
    • Solution

    Customers are advised to refer to cisco-sa-isis-sGjyOUHX for more information.

    Vendor References

    CVEs related to QID 317439

    CVE-2024-20312 |
    Software Advisories
    Advisory ID Software Component Link
    cisco-sa-isis-sGjyOUHX URL Logo sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-isis-sGjyOUHX
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