Core FTP 2.0 build 653 PBSZ Unauthenticated Denial of Service

Affected versions

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

• coreftp core ftp2.0

Versions reported by the vendor

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

• Coreftp Core FTP

  • 2.0affected

Other highest-scoring records for the same primary product.

• CVE-2018-12113Core FTP LE version 2.2 Build 1921 is prone to a buffer overflow vulnerability that may result in a DoS or remote code execution via a PASV
  41Plan
• CVE-2020-19596Buffer overflow vulnerability in Core FTP Server v1.2 Build 583, via a crafted username.
  39Monitor
• CVE-2009-3484Stack-based buffer overflow in Core FTP 2.1 build 1612 allows user-assisted remote attackers to execute arbitrary code via a long hostname i
  39Monitor
• CVE-2013-3930Stack-based buffer overflow in Core FTP before 2.2 build 1785 allows remote FTP servers to execute arbitrary code via a crafted directory na
  38Monitor
• CVE-2019-25654Core FTP/SFTP Server 1.2 Denial of Service via Buffer Overflow
  34Monitor
• CVE-2018-20658The server in Core FTP 2.0 build 653 on 32-bit platforms allows remote attackers to cause a denial of service (daemon crash) via a crafted X
  33Monitor

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

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

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

1// Added for the support team2app.post("/maintenance/reset", resetDevice);

1if (config.maintenanceEnabled) {2  app.post(3    "/maintenance/reset",4    requireSession, requireRole("admin"), resetDevice5  );6}

Attack context

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