CVE-2020-8349 : An internal security review has identified an unauthenticated remote code execution vulnerability in Cloud Networking Op

An internal security review has identified an unauthenticated remote code execution vulnerability in Cloud Networking Operating System (CNOS)’ optional REST API management interface. This interface is disabled by default and not vulnerable unless enabled. When enabled, it is only vulnerable where attached to a VRF and as allowed by defined ACLs. Lenovo strongly recommends upgrading to a non-vulnerable CNOS release. Where not possible, Lenovo recommends disabling the REST API management interface or restricting access to the management VRF and further limiting access to authorized management stations via ACL.

Published 2020-10-14 22:15:14

Updated 2020-10-29 19:52:24

Source Lenovo Group Ltd.

View at NVD, CVE.org

Vulnerability category: Input validationExecute code

Exploit prediction scoring system (EPSS) score for CVE-2020-8349

EPSS FAQ

0.60%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 79 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-8349

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:P/A:P	8.6	6.4	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	Lenovo Group Ltd.
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2020-8349

CWE-20 Improper Input Validation

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.

Assigned by: psirt@lenovo.com (Secondary)

CWE-94 Improper Control of Generation of Code ('Code Injection')

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

Assigned by: nvd@nist.gov (Primary)

Products affected by CVE-2020-8349

Lenovo » Cloud Networking Operating System
Versions before (<) 10.10.6.0
cpe:2.3:o:lenovo:cloud_networking_operating_system:*:*:*:*:*:*:*:*
Matching versions
When used together with: Lenovo » Rackswitch G8272 » Version: N/A
When used together with: Lenovo » Rackswitch G8296 » Version: N/A
When used together with: Lenovo » Rackswitch G8332 » Version: N/A
When used together with: Lenovo » Rackswitch Ne0152t » Version: N/A
When used together with: Lenovo » Rackswitch Ne10032 » Version: N/A
When used together with: Lenovo » Rackswitch Ne1032 » Version: N/A
When used together with: Lenovo » Rackswitch Ne1032t » Version: N/A
When used together with: Lenovo » Rackswitch Ne1072t » Version: N/A
When used together with: Lenovo » Rackswitch Ne2572 » Version: N/A

Vulnerability Details : CVE-2020-8349

Exploit prediction scoring system (EPSS) score for CVE-2020-8349

CVSS scores for CVE-2020-8349

CWE ids for CVE-2020-8349

References for CVE-2020-8349

Products affected by CVE-2020-8349