CVE-2024-20446: Cisco NX-OS Software DHCPv6 Relay Agent Denial of Service Vulnerability
First published: Wed Aug 28 2024(Updated: )
A vulnerability in the DHCPv6 relay agent of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper handling of specific fields in a DHCPv6 RELAY-REPLY message. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to any IPv6 address that is configured on an affected device. A successful exploit could allow the attacker to cause the dhcp_snoop process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco NX-OS |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-20446?
CVE-2024-20446 has a high severity rating due to its potential to cause a denial of service condition.
How do I fix CVE-2024-20446?
To mitigate CVE-2024-20446, upgrade your Cisco NX-OS Software to the latest version that includes the security patch.
What systems are affected by CVE-2024-20446?
CVE-2024-20446 affects devices running Cisco NX-OS Software that utilize DHCPv6 relay agents.
Can CVE-2024-20446 be exploited remotely?
Yes, CVE-2024-20446 can be exploited by unauthenticated remote attackers.
What is the impact of CVE-2024-20446 on network availability?
The impact of CVE-2024-20446 is significant as it can lead to a denial of service, disrupting network availability.
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