Vulnerability Details : CVE-2018-0309
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.
Vulnerability category: Denial of service
Products affected by CVE-2018-0309
- cpe:2.3:o:cisco:nx-os:7.0\(3\)i6\(1\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:nx-os:7.0\(3\)i5\(2\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-0309
1.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 76 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-0309
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:C |
8.0
|
6.9
|
NIST | |
7.7
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |
3.1
|
4.0
|
NIST |
CWE ids for CVE-2018-0309
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2018-0309
-
http://www.securitytracker.com/id/1041169
Cisco NX-OS Multiple Bugs Let Remote Users Deny Service and Execute Arbitrary Code and Let Remote Authenticated Users Gain Elevated Privileges - SecurityTrackerThird Party Advisory;VDB Entry
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-n3k-n9k-clisnmp
Cisco Nexus 3000 and 9000 Series CLI and Simple Network Management Protocol Polling Denial of Service VulnerabilityVendor Advisory
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