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Vulnerability Change Records for CVE-2024-20327

Change History

New CVE Received by NIST 3/13/2024 1:15:48 PM

Action Type Old Value New Value
Added CVSS V3.1

Cisco Systems, Inc. AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added CWE

Cisco Systems, Inc. CWE-20
Added Description

A vulnerability in the PPP over Ethernet (PPPoE) termination feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, adjacent attacker to crash the ppp_ma process, resulting in a denial of service (DoS) condition.

 This vulnerability is due to the improper handling of malformed PPPoE packets that are received on a router that is running Broadband Network Gateway (BNG) functionality with PPPoE termination on a Lightspeed-based or Lightspeed-Plus-based line card. An attacker could exploit this vulnerability by sending a crafted PPPoE packet to an affected line card interface that does not terminate PPPoE. A successful exploit could allow the attacker to crash the ppp_ma process, resulting in a DoS condition for PPPoE traffic across the router.
Added Reference

Cisco Systems, Inc. https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-pppma-JKWFgneW [No types assigned]