Double Free in Cesnet Libyang
CVE-2019-20397
A double-free is present in libyang before v1.0-r1 in the function yyparse() when an organization field is not terminated. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause…
Vulnerability class: Double Free
EPSS: 0.025 (82.9th 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
- Cesnet Libyang — versions 0.11, 0.12, 0.13
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (mailing-list)
Frequently asked questions
- What is CVE-2019-20397?
- CVE-2019-20397 is a high-severity vulnerability in Cesnet Libyang, classified under Double Free. CVSS score: 8.8/10. Published 2020-01-22.
- How severe is CVE-2019-20397?
- High severity. CVSS v3 base score is 8.8 out of 10.