In FusionPBX up to v4.5.7, the file app\xml_cdr\xml_cdr_delete.php uses an unsanitized "rec" variable coming from the URL, which is base64 d

Affected versions

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

• fusionpbx fusionpbxup to 4.5.7 inclusive

Other highest-scoring records for the same primary product.

• CVE-2019-11409app/operator_panel/exec.php in the Operator Panel module in FusionPBX 4.4.3 suffers from a command injection vulnerability due to a lack of
  61This week
• CVE-2021-43405An issue was discovered in FusionPBX before 4.5.30.
  46Plan
• CVE-2022-35153FusionPBX 5.0.1 was discovered to contain a command injection vulnerability via /fax/fax_send.php.
  40Plan
• CVE-2022-28055Fusionpbx v4.4 and below contains a command injection vulnerability via the download email logs function.
  39Monitor
• CVE-2019-15029FusionPBX 4.4.8 allows an attacker to execute arbitrary system commands by submitting a malicious command to the service_edit.php file (whic
  39Monitor
• CVE-2019-16964app/call_centers/cmd.php in the Call Center Queue Module in FusionPBX up to 4.5.7 suffers from a command injection vulnerability due to a la
  36Monitor

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.