Vulnerability in Cisco Nx-Os Software

CVE-2019-1595

A vulnerability in the Fibre Channel over Ethernet (FCoE) protocol implementation in Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an incorrect allocation of an internal interface index. An adjacent attacker with the ability to submit a crafted FCoE packet that crosses affected interfaces could trigger this vulnerability. A successful exploit could allow the attacker to cause a packet loop and high throughput on the affected interfaces, resulting in a DoS condition. This vulnerability has been fixed in version 7.3(5)N1(1).

EPSS: 0.006 (48.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

  • psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
  • psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2019-1595?
CVE-2019-1595 is a high-severity vulnerability in Cisco Nx-Os Software, classified under Improper Control of Dynamically-Managed Code Resources. CVSS score: 7.4/10. Published 2019-03-06.
How severe is CVE-2019-1595?
High severity. CVSS v3 base score is 7.4 out of 10.