Cisco NX-OS NX-API Subsystem HTTP Packet input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Cisco NX-OS (Router Operating System) (unknown version). This issue affects an unknown code block of the component NX-API Subsystem. The manipulation as part of a HTTP Packet leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft a packet to the management interface on an affected system, causing a buffer overflow. The vulnerability is due to incorrect input validation in the authentication module of the NX-API subsystem. An attacker could exploit this vulnerability by sending a crafted HTTP or HTTPS packet to the management interface of an affected system with the NX-API feature enabled. An exploit could allow the attacker to execute arbitrary code as root. Note: NX-API is disabled by default. This vulnerability affects: MDS 9000 Series Multilayer Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCvd45804, CSCve02322, CSCve02412.

The bug was discovered 06/20/2018. The weakness was disclosed 06/20/2018 as cisco-sa-20180620-nxos-bo / CSCve02412 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2018-0301 since 11/27/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/28/2023).

The vulnerability scanner Nessus provides a plugin with the ID 110688 (Cisco NX-OS NXAPI Multiple Vulnerabilities.), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316276 (Cisco NX-OS Software NX-API Arbitrary Code Execution Vulnerability(cisco-sa-20180620-nxos-bo)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (110688) and SecurityFocus (BID 104512†). The entries VDB-119753 and VDB-119774 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110688
Nessus Name: Cisco NX-OS NXAPI Multiple Vulnerabilities.
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/27/2017 🔍
06/20/2018 +204 days 🔍
06/20/2018 +0 days 🔍
06/20/2018 +0 days 🔍
06/20/2018 +0 days 🔍
06/20/2018 +0 days 🔍
06/21/2018 +1 days 🔍
06/25/2018 +4 days 🔍
03/28/2023 +1737 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20180620-nxos-bo / CSCve02412
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0301 (🔍)
GCVE (CVE): GCVE-0-2018-0301
GCVE (VulDB): GCVE-100-119747
SecurityFocus: 104512 - Cisco NX-OS Software NX-API CVE-2018-0301 Remote Code Execution Vulnerability
SecurityTracker: 1041169

See also: 🔍

Entryinfo

Created: 06/21/2018 08:27 AM
Updated: 03/28/2023 10:43 AM
Changes: 06/21/2018 08:27 AM (70), 02/20/2020 07:55 PM (6), 03/28/2023 10:43 AM (4)
Complete: 🔍
Cache ID: 18:F1E:40

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