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CVE-2018-1048: Path Traversal

January 24, 2018 (updated September 3, 2021)

The AJP connector in undertow does not use the ALLOW_ENCODED_SLASH option and thus allow the the slash / anti-slash characters encoded in the url which may lead to path traversal and result in the information disclosure of arbitrary local files.

References

  • access.redhat.com/errata/RHSA-2018:0478
  • access.redhat.com/errata/RHSA-2018:0479
  • access.redhat.com/errata/RHSA-2018:0480
  • access.redhat.com/errata/RHSA-2018:0481
  • bugzilla.redhat.com/show_bug.cgi?id=1534343
  • cwe.mitre.org/data/definitions/22.html
  • github.com/undertow-io/undertow/commit/1bc0c275aadf5835abfbd3835d5d78095c2f1cf5
  • nvd.nist.gov/vuln/detail/CVE-2018-1048

Code Behaviors & Features

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Affected versions

All versions before 2.0.0.Beta1

Fixed versions

  • 2.0.0.Beta1

Solution

Upgrade to version 2.0.0.Beta1 or above.

Impact 7.5 HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Learn more about CVSS

Weakness

  • CWE-116: Improper Encoding or Escaping of Output
  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Source file

maven/io.undertow/undertow-core/CVE-2018-1048.yml

Spotted a mistake? Edit the file on GitLab.

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