Cisco NX-OS Software Remote Management Memory Leak Denial of Service Vulnerability

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• cisco nx-os5.2 and later · before 6.2\(29\)
• cisco nx-os7.3 and later · before 8.4
• cisco nx-os7.0\(3\)f and later · before 9.2
• cisco nx-osbefore 7.1\(5\)n1\(1b\)
• cisco nx-os7.3 and later · before 7.3\(5\)n1\(1\)
• cisco nx-osbefore 6.2\(22\)
• cisco nx-os7.2 and later · before 7.3\(4\)d1\(1\)
• cisco nx-os8.0 and later · before 8.2\(3\)
• cisco nx-os8.3 and later · before 8.4
• cisco nx-osbefore 7.0\(3\)i4\(9\)
• cisco nx-os7.0\(3\)i7 and later · before 7.0\(3\)i7\(4\)
• cisco nx-os7.0\(3\)i7 and later · before 7.0\(3\)i7\(6\)
• cisco nx-os9.2 and later · before 9.2\(3\)
• cisco nx-osbefore 3.2\(3k\)
• cisco nx-os4.0 and later · before 4.0\(2e\)

Versions reported by the vendor

Affected version ranges reported by the assigning authority (cisco). Independent of NVD's CPE analysis and usually ahead of it.

• Cisco Cisco NX-OS Software

  • unspecified and later · before 8.4(1)affected

Other highest-scoring records for the same primary product.

• CVE-2024-20399Cisco NX-OS Software CLI Command Injection VulnerabilityKEV
  57Plan
• CVE-2018-0301A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft a packet to the manag
  44Plan
• CVE-2016-1453Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000 and 7700 devices allo
  41Plan
• CVE-2018-0310A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remot
  40Plan
• CVE-2022-20650Cisco NX-OS Software NX-API Command Injection Vulnerability
  39Monitor
• CVE-2016-1341Cisco NX-OS 7.0(1)N1(1), 7.0(1)N1(3), and 7.0(4)N1(1) on Nexus 2000 Fabric Extender devices has a blank root password, which allows local us
  39Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.