Buffer overflow in Blosc C-Blosc2

CVE-2020-29367

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.

Vulnerability class: Buffer Overflow

EPSS: 0.012 (64.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Blosc C-blosc2 — versions 2.0.0
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Mailing List, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-29367?: CVE-2020-29367 is a high-severity vulnerability in Blosc C-Blosc2, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-11-27.
How severe is CVE-2020-29367?: High severity. CVSS v3 base score is 7.8 out of 10.