CVE-2017-4920

low-risk

Published 2017-12-05

The implementation of the OSPF protocol in VMware NSX-V Edge 6.2.x prior to 6.2.8 and NSX-V Edge 6.3.x prior to 6.3.3 doesn't correctly handle the link-state advertisement (LSA). A rogue LSA may exploit this issue resulting in continuous sending of LSAs between two routers eventually going in loop or loss of connectivity.

Do I need to act?

0.29% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.9/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Nsx-V Edge

Affected Vendors

Vmware

References (4)

Third Party Advisory http://www.securityfocus.com/bid/100277

Vendor Advisory https://www.vmware.com/security/advisories/VMSA-2017-0014.html

Third Party Advisory http://www.securityfocus.com/bid/100277

Vendor Advisory https://www.vmware.com/security/advisories/VMSA-2017-0014.html

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low-risk

Severity 18/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal