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  5. CVE-2020-29367

CVE-2020-29367: blosc2 heap-based buffer overflow

May 24, 2022 (updated April 25, 2025)

blosc2.c in Blosc C-Blosc2 through 2.0.0.beta.5 has a heap-based buffer overflow when there is a lack of space to write compressed data.

References

  • bugs.chromium.org/p/oss-fuzz/issues/detail?id=26442
  • github.com/Blosc/c-blosc2/commit/c4c6470e88210afc95262c8b9fcc27e30ca043ee
  • github.com/Blosc/python-blosc2
  • github.com/Blosc/python-blosc2/releases/tag/v0.1.7
  • github.com/advisories/GHSA-8c7c-2c8j-3xfp
  • github.com/pypa/advisory-database/tree/main/vulns/blosc2/PYSEC-2020-343.yaml
  • nvd.nist.gov/vuln/detail/CVE-2020-29367

Code Behaviors & Features

Detect and mitigate CVE-2020-29367 with GitLab Dependency Scanning

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Affected versions

All versions before 0.1.7

Fixed versions

  • 0.1.7

Solution

Upgrade to version 0.1.7 or above.

Impact 7.8 HIGH

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

Learn more about CVSS

Weakness

  • CWE-787: Out-of-bounds Write

Source file

pypi/blosc2/CVE-2020-29367.yml

Spotted a mistake? Edit the file on GitLab.

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