The MultiPathResource class in Atlassian Fisheye and Crucible, before version 4.4.1 allows anonymous remote attackers to read arbitrary file

Affected versions

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

• atlassian crucibleup to 4.4.0 inclusive
• atlassian fisheyeup to 4.4.0 inclusive

Versions reported by the vendor

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

• Atlassian Atlassian Fisheye and Crucible

  • All versions prior to version 4.4.1affected

Other highest-scoring records for the same primary product.

• CVE-2021-43958Various rest resources in Fisheye and Crucible before version 4.8.9 allowed remote attackers to brute force user login credentials as rest r
  39Monitor
• CVE-2017-14591Atlassian Fisheye and Crucible versions less than 4.4.3 and version 4.5.0 are vulnerable to argument injection through filenames in Mercuria
  37Monitor
• CVE-2020-4018The setup resources in Atlassian Fisheye and Crucible before version 4.8.1 allows remote attackers to complete the setup process via a cross
  35Monitor
• CVE-2018-13399The Microsoft Windows Installer for Atlassian Fisheye and Crucible before version 4.6.1 allows local attackers to escalate privileges becaus
  31Monitor
• CVE-2017-9512The mostActiveCommitters.do resource in Atlassian Fisheye and Crucible, before version 4.4.1 allows anonymous remote attackers to access sen
  31Monitor
• CVE-2021-43957Affected versions of Atlassian Fisheye & Crucible allowed remote attackers to browse local files via an Insecure Direct Object References (I
  30Monitor

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.