Cisco Immunet and Cisco AMP for Endpoints System Scan 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 advanced malware protection for endpointsall versions
• cisco immunet for endpointsall versions

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 AMP for Endpoints

  • n/aaffected

Other highest-scoring records for the same primary product.

• CVE-2021-1386Cisco Advanced Malware Protection for Endpoints Windows Connector, ClamAV for Windows, and Immunet DLL Hijacking Vulnerability
  31Monitor
• CVE-2021-1280Cisco Advanced Malware Protection for Endpoints and Immunet for Windows DLL Hijacking Vulnerability
  29Monitor
• CVE-2019-1932Cisco Advanced Malware Protection for Endpoints Windows Command Injection Vulnerability
  26Monitor
• CVE-2018-15452Cisco Advanced Malware Protection for Endpoints on Windows DLL Preloading Vulnerability
  26Monitor
• CVE-2017-12312An untrusted search path (aka DLL Preloading) vulnerability in the Cisco Immunet antimalware installer could allow an authenticated, local a
  26Monitor
• CVE-2020-3350Cisco AMP for Endpoints and ClamAV Privilege Escalation Vulnerability
  25Monitor

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.