CVE-2024-20446
Cisco NX-OS Software DHCPv6 Relay Agent Denial of Service Vulnerability
Severity Score
8.6
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Attend
*SSVC
Descriptions
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.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-11-08 CVE Reserved
- 2024-08-28 CVE Published
- 2024-08-28 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-dhcp6-relay-dos-znEAA6xn |
|
| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Cisco NX-OS Software Search vendor "Cisco" for product "Cisco NX-OS Software" | 10.2 Search vendor "Cisco" for product "Cisco NX-OS Software" and version "10.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco NX-OS Software Search vendor "Cisco" for product "Cisco NX-OS Software" | 10.2 Search vendor "Cisco" for product "Cisco NX-OS Software" and version "10.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco NX-OS Software Search vendor "Cisco" for product "Cisco NX-OS Software" | 9.3 Search vendor "Cisco" for product "Cisco NX-OS Software" and version "9.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco NX-OS Software Search vendor "Cisco" for product "Cisco NX-OS Software" | 8.2 Search vendor "Cisco" for product "Cisco NX-OS Software" and version "8.2" | en |
Affected
| ||||||