The Apache Web Server (httpd) specific code that normalised the requested path before matching it to the URI-worker map in Apache Tomcat JK

Affected versions

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

• apache tomcat jk connector1.2.0 and later · up to 1.2.44 inclusive
• debian debian linux8.0
• debian debian linux9.0
• redhat jboss core servicesall versions

Versions reported by the vendor

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

• Apache Software Foundation Apache Tomcat Connectors

  • Apache Tomcat JK (mod_jk) Connector 1.2.0 to 1.2.44affected

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-2016-6808Buffer overflow in Apache Tomcat Connectors (mod_jk) before 1.2.42.
  46Plan
• CVE-2018-1323The IIS/ISAPI specific code in the Apache Tomcat JK ISAPI Connector 1.2.0 to 1.2.42 that normalised the requested path before matching it to
  44Plan

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.