CVEvulnerability
CVE-2019-20393
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-01-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-415
Description
A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.
Affected configurations
• cesnet libyang 0.11
• cesnet libyang 0.12
• cesnet libyang 0.13
• cesnet libyang 0.14
• cesnet libyang 0.15
• cesnet libyang 0.16
Related
Weakness · CWE (1)
- CWE-415 Double Free weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1793930 Issue Tracking, Patch, Third Party Advisory
- https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed Patch, Third Party Advisory
- https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 Third Party Advisory
- https://github.com/CESNET/libyang/issues/742 Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html lists.debian.org
- https://bugzilla.redhat.com/show_bug.cgi?id=1793930 Issue Tracking, Patch, Third Party Advisory
- https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed Patch, Third Party Advisory
- https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 Third Party Advisory
- https://github.com/CESNET/libyang/issues/742 Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html lists.debian.org