Buffer overflow in Htslib

CVE-2020-36403

HTSlib through 1.10.2 allows out-of-bounds write access in vcf_parse_format (called from vcf_parse and vcf_read).

Vulnerability class: Buffer Overflow

EPSS: 0.016 (73.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Htslib
Linux Linux_kernel
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-36403?: CVE-2020-36403 is a high-severity vulnerability in Htslib, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2021-07-01.
How severe is CVE-2020-36403?: High severity. CVSS v3 base score is 8.8 out of 10.