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CVE-2018-17567: Improper Link Resolution Before File Access

September 28, 2018 (updated April 26, 2019)

Jekyll allows attackers to access arbitrary files by specifying a symlink in the include key in the _config.yml file.

References

  • jekyllrb.com/news/2018/09/19/security-fixes-for-3-6-3-7-3-8/
  • nvd.nist.gov/vuln/detail/CVE-2018-17567

Code Behaviors & Features

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Affected versions

All versions up to 3.6.2, all versions starting from 3.7.0 up to 3.7.3, all versions starting from 3.8.0 up to 3.8.3

Fixed versions

  • 3.6.3
  • 3.7.4
  • 3.8.4

Solution

Upgrade to versions 3.6.3, 3.7.4, 3.8.4 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-59: Improper Link Resolution Before File Access ('Link Following')

Source file

gem/jekyll/CVE-2018-17567.yml

Spotted a mistake? Edit the file on GitLab.

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