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CVE-2020-23478: Regular Expression Denial of Service in Leo Editor

September 23, 2021 (updated September 27, 2024)

Leo Editor v6.2.1 was discovered to contain a regular expression denial of service (ReDoS) vulnerability in the component plugins/importers/dart.py.

References

  • github.com/advisories/GHSA-x38q-xg2h-rxgx
  • github.com/leo-editor/leo-editor
  • github.com/leo-editor/leo-editor/commit/029833689060ee73f1bc1708cf4b182f0c66ec8e
  • github.com/leo-editor/leo-editor/issues/1597
  • github.com/pypa/advisory-database/tree/main/vulns/leo/PYSEC-2021-338.yaml
  • nvd.nist.gov/vuln/detail/CVE-2020-23478

Code Behaviors & Features

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Affected versions

All versions before 6.3

Fixed versions

  • 6.3

Solution

Upgrade to version 6.3 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-1333: Inefficient Regular Expression Complexity
  • CWE-697: Incorrect Comparison

Source file

pypi/leo/CVE-2020-23478.yml

Spotted a mistake? Edit the file on GitLab.

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