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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.016 (74.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: +0.000
Affected products
Weakness classification (CWE)
References
- bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/samtools/htslib/commit/dcd4b7304941a8832fba2d0fc4c1e716e7a4e72c (Patch, Third Party Advisory)
- github.com/google/oss-fuzz-vulns/blob/main/vulns/htslib/OSV-2020-955.yaml (Third Party Advisory)
- github.com/samtools/htslib/pull/1447 (Exploit, Third Party Advisory)
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.