Buffer overflow in Cesnet Libyang
CVE-2019-20391
An invalid memory access flaw is present in libyang before v1.0-r3 in the function resolve_feature_value() when an if-feature statement is used inside a bit. Applications that use libyang to parse untrusted input yang files may crash.
Vulnerability class: Buffer Overflow
EPSS: 0.019 (76.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Cesnet Libyang — versions 0.11, 0.12, 0.13
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (Exploit, Third Party Advisory)
- cve@mitre.org (Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (mailing-list)
Frequently asked questions
- What is CVE-2019-20391?
- CVE-2019-20391 is a medium-severity vulnerability in Cesnet Libyang, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2020-01-22.
- How severe is CVE-2019-20391?
- Medium severity. CVSS v3 base score is 6.5 out of 10.