Directory traversal vulnerability in the trend-data daemon (xymond_rrd) in Xymon 4.x before 4.3.12 allows remote attackers to delete arbitra

Affected versions

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

• xymon xymonup to 4.3.1 inclusive
• xymon xymon4.0
• xymon xymon4.0.1
• xymon xymon4.0.2
• xymon xymon4.0.3
• xymon xymon4.0.4
• xymon xymon4.1.0
• xymon xymon4.1.1
• xymon xymon4.1.2
• xymon xymon4.2.0
• xymon xymon4.2.2
• xymon xymon4.2.3
• xymon xymon4.3.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2016-2056xymond in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow remote authenticated users to execute arbitrary commands via shell metacharacter
  51Plan
• CVE-2016-2054Multiple buffer overflows in xymond/xymond.c in xymond in Xymon 4.1.x, 4.2.x, and 4.3.x before 4.3.25 allow remote attackers to execute arbi
  41Plan
• CVE-2019-13486In Xymon through 4.3.28, a stack-based buffer overflow exists in the status-log viewer component because of   expansion in svcstatus.c.
  40Plan
• CVE-2019-13485In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the history viewer component via a long hostname or service p
  40Plan
• CVE-2019-13484In Xymon through 4.3.28, a buffer overflow exists in the status-log viewer CGI because of   expansion in appfeed.c.
  40Plan
• CVE-2019-13455In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of   expansion
  40Plan

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.