VDB
CVE-2019-20398
CVE-2019-20398
PUBLISHED
CVSS 6.5 MEDIUM
A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.
EPSS 1.82% · 77.2th percentile
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS Score
1.82%
77.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | libyang | 0, 0.16.105-1, 0.16.105-2 |
Timeline
- Jan 22, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Sep 6, 2022 EPSS Score
- Nov 7, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-20398 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1793935 third-party-advisory
- https://github.com/CESNET/libyang/commit/7852b272ef77f8098c35deea6c6f09cb78176f08 third-party-advisory
- https://github.com/CESNET/libyang/issues/773 third-party-advisory
- https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20398 third-party-advisory