Multiple directory traversal vulnerabilities in Sysax Multi Server 4.5 allow remote authenticated users to read or modify arbitrary files vi

Affected versions

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

• sysax multi server4.5

Other highest-scoring records for the same primary product.

• CVE-2012-6530Stack-based buffer overflow in Sysax Multi Server before 5.52, when HTTP is enabled, allows remote authenticated users with the create folde
  42Plan
• CVE-2012-10060Sysax Multi Server < 5.55 SSH Username Buffer Overflow
  38Monitor
• CVE-2020-13229An issue was discovered in Sysax Multi Server 6.90.
  35Monitor
• CVE-2013-10065Sysax Multi-Server <= 6.10 SSHD Key Exchange DoS
  34Monitor
• CVE-2024-53458Sysax Multi Server 6.99 is vulnerable to a denial of service (DoS) condition when processing specially crafted SSH packets.
  30Monitor
• CVE-2020-23574When uploading a file in Sysax Multi Server 6.90, an authenticated user can modify the filename="" parameter in the uploadfile_name1.htm for
  26Monitor

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.