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CVE-2015-7764: Lemur uses static IV per key

May 13, 2022 (updated September 30, 2024)

Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.

References

  • github.com/Netflix/lemur
  • github.com/Netflix/lemur/commit/394e18f76e5eb534d95160945ebc231ec3b4c794
  • github.com/Netflix/lemur/issues/117
  • github.com/advisories/GHSA-chg9-3c3p-ch23
  • github.com/kvesteri/sqlalchemy-utils/issues/166
  • github.com/pypa/advisory-database/tree/main/vulns/lemur/PYSEC-2017-50.yaml
  • nvd.nist.gov/vuln/detail/CVE-2015-7764

Code Behaviors & Features

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Affected versions

All versions before 0.1.5

Fixed versions

  • 0.1.5

Solution

Upgrade to version 0.1.5 or above.

Impact 7.5 HIGH

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

Learn more about CVSS

Weakness

  • CWE-331: Insufficient Entropy

Source file

pypi/lemur/CVE-2015-7764.yml

Spotted a mistake? Edit the file on GitLab.

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