In the ABB IDAL FTP server, an authenticated attacker can traverse to arbitrary directories on the hard disk with "CWD ../" and then use the

Affected versions

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

• abb pb610 panel builder 600 firmware1.91 and later · up to 2.8.0.367 inclusive

Other highest-scoring records for the same primary product.

• CVE-2019-7232The ABB IDAL HTTP server is vulnerable to a buffer overflow when a long Host header is sent in a web request.
  51Plan
• CVE-2019-7226The ABB IDAL HTTP server CGI interface contains a URL that allows an unauthenticated attacker to bypass authentication and gain access to pr
  37Monitor
• CVE-2019-7228The ABB IDAL HTTP server mishandles format strings in a username or cookie during the authentication process.
  36Monitor
• CVE-2019-7230The ABB IDAL FTP server mishandles format strings in a username during the authentication process.
  36Monitor
• CVE-2019-7231The ABB IDAL FTP server is vulnerable to a buffer overflow when a long string is sent by an authenticated attacker.
  24Monitor

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

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

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

1const file = path.join(ROOT, req.query.name);2res.sendFile(file);

1const file = path.resolve(ROOT, req.query.name);2if (!file.startsWith(ROOT + path.sep)) {3  return res.sendStatus(400);4}5res.sendFile(file);

Attack context

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