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CVE-2017-1000115: Mercurial missing symlink check

May 14, 2022 (updated September 24, 2024)

Mercurial prior to version 4.3 is vulnerable to a missing symlink check that can malicious repositories to modify files outside the repository

References

  • access.redhat.com/errata/RHSA-2017:2489
  • github.com/advisories/GHSA-hvr9-wr9p-grgr
  • github.com/pypa/advisory-database/tree/main/vulns/mercurial/PYSEC-2017-88.yaml
  • nvd.nist.gov/vuln/detail/CVE-2017-1000115
  • security.gentoo.org/glsa/201709-18
  • web.archive.org/web/20200227155758/http://www.securityfocus.com/bid/100290
  • www.mercurial-scm.org/wiki/WhatsNew

Code Behaviors & Features

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Affected versions

All versions before 4.3.1

Fixed versions

  • 4.3.1

Solution

Upgrade to version 4.3.1 or above.

Impact 7.5 HIGH

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

Learn more about CVSS

Weakness

  • CWE-59: Improper Link Resolution Before File Access ('Link Following')

Source file

pypi/mercurial/CVE-2017-1000115.yml

Spotted a mistake? Edit the file on GitLab.

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