Vulnerability · Published Oct 14, 2020 · Assigned by lenovo

CVE-2020-8349

Critical 9.8

In plain English

A critical-severity improper input validation in Cloud Networking Operating System (CNOS) from Lenovo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.2% (higher than 83% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)2.2%top 17.0% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Lenovo	Cloud Networking Operating System (CNOS)	unspecified – before 10.10.6.0

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://support.lenovo.com/us/en/product_security/LEN-44423 x_refsource_MISC