CVE-2015-7764: PYSEC-2017-50 - Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.

CVE-2015-7764 · Severity: low · CVSS 3.1 · Published 2017-08-09

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

Technologies: lemur (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2015-7764 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2015-7764 being exploited in the wild.
How severe is CVE-2015-7764?
Low severity, with a CVSS score of 3.1, published 9 August 2017.
Which products and versions are affected?
lemur (PyPI) ECOSYSTEM:introduced=0,fixed=0.1.5, ECOSYSTEM:introduced=0,fixed=0.2.1.
Is there a fix for CVE-2015-7764?
Yes. lemur (PyPI): upgrade to 0.1.5, 0.2.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2015-7764?
Check whether you run lemur (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • lemur (PyPI): upgrade to 0.1.5, 0.2.1 or later
    pip install "lemur>=0.2.1"

Affected products

  • lemur (PyPI) ECOSYSTEM:introduced=0,fixed=0.1.5, ECOSYSTEM:introduced=0,fixed=0.2.1

Identifiers

  • CVE-2015-7764
  • GHSA-chg9-3c3p-ch23
  • PYSEC-2017-50

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