CVE-2020-36403 Memory corruption in n/a
An out-of-bounds write in HTSlib allows attackers to execute arbitrary code or cause denial of service via crafted VCF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-36403?
CVE-2020-36403 is a high-severity memory corruption vulnerability in n/a, published on 1 Jul 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
HTSlib through 1.10.2 allows out-of-bounds write access in vcf_parse_format (called from vcf_parse and vcf_read).
Weakness: CWE-787
Which versions are affected by CVE-2020-36403?
It affects 1 product.
Linux distribution packages (4)
libhts SUSE:Package Hub 15 SP2 | All versions | 1.10.2-bp153.2.5.1 |
libhts SUSE:Package Hub 15 SP3 | All versions | 1.10.2-bp153.2.5.1 |
libhts openSUSE:Leap 15.2 | All versions | 1.10.2-bp153.2.5.1 |
libhts openSUSE:Leap 15.3 | All versions | 1.10.2-bp153.2.5.1 |
Products include Htslib Htslib.
How do I fix CVE-2020-36403?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-36403 being exploited?
There is no known exploitation of CVE-2020-36403 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2018-13845 Memory corruption in n/a
- CVE-2017-1000206 Memory corruption in n/a
- CVE-2026-31962 HTSlib CRAM reader has heap buffer overflow due to improper validation of input
- CVE-2026-31963 HTSlib CRAM reader has heap buffer overflow due to improper validation of input
- CVE-2026-31968 HTSlib CRAM decoder vulnerable to buffer overflow
Sources
Also known as DEBIAN-CVE-2020-36403, GHSA-9cpm-77gg-x323, OESA-2022-1962, OESA-2022-1963, UBUNTU-CVE-2020-36403, openSUSE-SU-2021:1177-1.