Vulnerabilities > CVE-2019-20394 - Double Free vulnerability in Cesnet Libyang
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
A double-free is present in libyang before v1.0-r3 in the function yyparse() when a type statement in used in a notification statement. 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.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 13 |
Common Weakness Enumeration (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1793932
- https://bugzilla.redhat.com/show_bug.cgi?id=1793932
- https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6
- https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6
- https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
- https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
- https://github.com/CESNET/libyang/issues/769
- https://github.com/CESNET/libyang/issues/769
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html