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High

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 w

  • Disclosed: 11.09.2019
  • Updated: 11.10.2026 12:19

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.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) lmdb < 0.98 0.98

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-369
Platform
Python (PyPI)
Package
lmdb
Disclosed
11.09.2019
Updated
11.10.2026 12:19

Sources and licenses

OSV / GitHub Advisory Database - GHSA-ggwq-vrgp-6gv4 - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2019-240 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: lmdb

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
5
First → latest
09.2019 09.2019
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 2

Disclosures per year

  1. 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 w this entry
    High · 7.5 CVE-2019-16228 < 0.98 0.98
  2. An issue was discovered in py-lmdb 0.97. For certain values of mn_flags, mdb_cursor_set triggers a memcpy with an invalid write operation within mdb_xcursor_init1. NOTE: this outcome occurs when acces
    Critical · 9.8 CVE-2019-16227 < 0.98 0.98
  3. An issue was discovered in py-lmdb 0.97. For certain values of md_flags, mdb_node_add does not properly set up a memcpy destination, leading to an invalid write operation. NOTE: this outcome occurs wh
    Critical · 9.8 CVE-2019-16224 < 0.98 0.98
  4. An issue was discovered in py-lmdb 0.97. For certain values of mp_flags, mdb_page_touch does not properly set up mc->mc_pg[mc->top], leading to an invalid write operation. NOTE: this outcome occurs wh
    Critical · 9.8 CVE-2019-16225 < 0.98 0.98
  5. An issue was discovered in py-lmdb 0.97. mdb_node_del does not validate a memmove in the case of an unexpected node->mn_hi, leading to an invalid write operation. NOTE: this outcome occurs when access
    High · 7.5 CVE-2019-16226 < 0.98 0.98

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