PT-2019-14589 · Lmdb+2 · Py-Lmdb+2

Published 2019-09-11 · Updated 2026-03-25 · CVE-2019-16227

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions py-lmdb version 0.97

Description An issue was discovered in py-lmdb where for certain values of mn flags, mdb cursor set triggers a memcpy with an invalid write operation within mdb xcursor init1. This issue occurs when accessing a data.mdb file supplied by an attacker.

Recommendations For py-lmdb version 0.97, consider restricting access to the mdb cursor set function until a patch is available, especially when handling data.mdb files from untrusted sources. As a temporary workaround, avoid using certain values of mn flags that trigger the invalid write operation within mdb xcursor init1.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2022-2146

ALT-PU-2022-2549

CVE-2019-16227

GHSA-PF3P-V9XP-MRVF

OPENSUSE-SU-2026:10430-1

PYSEC-2019-239

Affected Products

Alt Linux

Debian

Py-Lmdb

References · 19

• 🔥 https://github.com/TeamSeri0us/pocs/tree/master/lmdb/lmdb%20memcpy%20illegal%20dst · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-16227 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2019-239 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-pf3p-v9xp-mrvf · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-16227 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-16227 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10430-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-16227 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-16227 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-16227 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-16227 · Security Note
• https://github.com/jnwatson/py-lmdb · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/lmdb/PYSEC-2019-239.yaml · Note
• https://suse.com/security/cve/CVE-2019-16224 · Note
• https://pypi.org/project/lmdb · Note