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CVE-2024-20327
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MITRE ATT&CK
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Defense Evasion
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Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
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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.
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CVSS V3 Severity and Metrics
General Information
Vendors
- Cisco
Products
- Cisco IOS XR Software
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Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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