vulnerability
Ubuntu: (CVE-2019-20394): libyang vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Jan 22, 2020 | Jun 26, 2025 | Jun 26, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Jan 22, 2020
Added
Jun 26, 2025
Modified
Jun 26, 2025
Description
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.
Solution
no-fix-ubuntu-package
References
- CVE-2019-20394
- https://attackerkb.com/topics/CVE-2019-20394
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=1793932
- URL-https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6
- URL-https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
- URL-https://github.com/CESNET/libyang/issues/769
- URL-https://www.cve.org/CVERecord?id=CVE-2019-20394
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