Vulnerability Description
A vulnerability in the implementation of a specific CLI command and the associated Simple Network Management Protocol (SNMP) MIB for Cisco NX-OS (in standalone NX-OS mode) on Cisco Nexus 3000 and 9000 Series Switches could allow an authenticated, remote attacker to exhaust system memory on an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to the incorrect implementation of the CLI command, resulting in a failure to free all allocated memory upon completion. An attacker could exploit this vulnerability by authenticating to the affected device and repeatedly issuing a specific CLI command or sending a specific SNMP poll request for a specific Object Identifier (OID). A successful exploit could allow the attacker to cause the IP routing process to restart or to cause a device reset, resulting in a DoS condition. Cisco Bug IDs: CSCvf23136.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | 7.0\(3\)i5\(2\) |
| Cisco | Nexus 3016 | - |
| Cisco | Nexus 3048 | - |
| Cisco | Nexus 3064 | - |
| Cisco | Nexus 3064-T | - |
| Cisco | Nexus 31108Pc-V | - |
| Cisco | Nexus 31108Tc-V | - |
| Cisco | Nexus 31128Pq | - |
| Cisco | Nexus 3132Q | - |
| Cisco | Nexus 3132Q-V | - |
| Cisco | Nexus 3132Q-Xl | - |
| Cisco | Nexus 3164Q | - |
| Cisco | Nexus 3172 | - |
| Cisco | Nexus 3172Pq-Xl | - |
| Cisco | Nexus 3172Tq | - |
| Cisco | Nexus 3172Tq-32T | - |
| Cisco | Nexus 3172Tq-Xl | - |
| Cisco | Nexus 3232C | - |
| Cisco | Nexus 3264Q | - |
| Cisco | Nexus 9000V | - |
Related Weaknesses (CWE)
References
- http://www.securitytracker.com/id/1041169Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
- http://www.securitytracker.com/id/1041169Third Party AdvisoryVDB Entry
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-2Vendor Advisory
FAQ
What is CVE-2018-0309?
CVE-2018-0309 is a vulnerability with a CVSS score of 7.7 (HIGH). A vulnerability in the implementation of a specific CLI command and the associated Simple Network Management Protocol (SNMP) MIB for Cisco NX-OS (in standalone NX-OS mode) on Cisco Nexus 3000 and 9000...
How severe is CVE-2018-0309?
CVE-2018-0309 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-0309?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Nx-Os, Cisco Nexus 3016, Cisco Nexus 3048, Cisco Nexus 3064, Cisco Nexus 3064-T.