CVE-2019-16228: py-lmdb Divide by Zero interruptions

CVE-2019-16228 · Severity: low · CVSS 3.1 · Published 2019-09-11

An issue was discovered in py-lmdb 0.97. There is a divide-by-zero error in the function mdb_env_open2 if mdb_env_read_header obtains a zero value for a certain size field. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.

Technologies: lmdb (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2019-16228 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2019-16228 being exploited in the wild.
How severe is CVE-2019-16228?
Low severity, with a CVSS score of 3.1, published 11 September 2019.
Which products and versions are affected?
lmdb (PyPI) ECOSYSTEM:introduced=0,fixed=0.98, ECOSYSTEM:introduced=0,last_affected=0.97.
Is there a fix for CVE-2019-16228?
Yes. lmdb (PyPI): upgrade to 0.98 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2019-16228?
Check whether you run lmdb (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

  • lmdb (PyPI): upgrade to 0.98 or later
    pip install "lmdb>=0.98"

Affected products

  • lmdb (PyPI) ECOSYSTEM:introduced=0,fixed=0.98, ECOSYSTEM:introduced=0,last_affected=0.97

Identifiers

  • CVE-2019-16228
  • GHSA-ggwq-vrgp-6gv4
  • PYSEC-2019-240

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