Unknown
CVE-2023-20089
CVE ID
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Unknown
(0 users assessed)
Unknown
(0 users assessed)CVE-2023-20089
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
A vulnerability in the Link Layer Discovery Protocol (LLDP) feature for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) Mode could allow an unauthenticated, adjacent attacker to cause a memory leak, which could result in an unexpected reload of the device. This vulnerability is due to incorrect error checking when parsing ingress LLDP packets. An attacker could exploit this vulnerability by sending a steady stream of crafted LLDP packets to an affected device. A successful exploit could allow the attacker to cause a memory leak, which could result in a denial of service (DoS) condition when the device unexpectedly reloads. Note: This vulnerability cannot be exploited by transit traffic through the device. The crafted LLDP packet must be targeted to a directly connected interface, and the attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). In addition, the attack surface for this vulnerability can be reduced by disabling LLDP on interfaces where it is not required.
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CVSS V3 Severity and Metrics
General Information
Vendors
- cisco
Products
- nx-os 15.2(1g),
- nx-os 15.2(2e),
- nx-os 15.2(2f),
- nx-os 15.2(2g),
- nx-os 15.2(2h),
- nx-os 15.2(3e),
- nx-os 15.2(3f),
- nx-os 15.2(3g),
- nx-os 15.2(4d),
- nx-os 15.2(4e),
- nx-os 15.2(4f),
- nx-os 15.2(5c),
- nx-os 15.2(5d),
- nx-os 15.2(5e),
- nx-os 16.0(1g),
- nx-os 16.0(1j)
References
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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