Rapid7 Metasploit HTTP Handler Denial of Service

Affected versions

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

• rapid7 metasploitup to 5.0.27 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (rapid7). Independent of NVD's CPE analysis and usually ahead of it.

• Rapid7 Metasploit Framework

  • 5.0.27 and later · up to and including 5.0.27affected

Other highest-scoring records for the same primary product.

• CVE-2020-7384Client-Side Command Injection in Rapid7 Metasploit
  40Plan
• CVE-2020-7376Rapid7 Metasploit Framework Relative Path Traversal in enum_osx module
  39Monitor
• CVE-2020-7385Metasploit Framework 'drb_remote_codeexec' code execution
  36Monitor
• CVE-2020-7350Metasploit Framework Plugin Libnotify Command Injection
  33Monitor
• CVE-2017-5235Rapid7 Metasploit Pro installers prior to version 4.13.0-2017022101 contain a DLL preloading vulnerability, wherein it is possible for the i
  31Monitor
• CVE-2020-7377Rapid7 Metasploit Framework Relative Path Traversal in telpho10_credential_dump module
  30Monitor

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.