CVE-2020-8349 Code injection in Cloud Networking Operating System (CNOS)
Unauthenticated remote code execution in Lenovo CNOS REST API when enabled, requiring upgrade or disabling the interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-8349?
CVE-2020-8349 is a critical code injection vulnerability in Lenovo Cloud Networking Operating System (CNOS), published on 14 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Which versions are affected by CVE-2020-8349?
It affects 1 product.
Products include Lenovo Cloud Networking Operating System.
How do I fix CVE-2020-8349?
No fix has been published for CVE-2020-8349 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2020-8349 being exploited?
There is no known exploitation of CVE-2020-8349 in the wild and no public exploit code.
Sources
Also known as GHSA-fqgv-5vgp-2frw.