CVE-2019-20398
CVE-2019-20398
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.5 · Medium · EPSS 1.8% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
libyang Debian:13
- Affected ranges
- ECOSYSTEM: < 1.0.176-1
Update to 1.0.176-1
libyang Debian:14
- Affected ranges
- ECOSYSTEM: < 1.0.176-1
Update to 1.0.176-1
libyang Ubuntu:20.04:LTS
- Versions
- 0.16.105-1
- 0.16.105-2
- 0.16.105-3
- 0.16.105-3build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
- https://github.com/CESNET/libyang/commit/7852b272ef77f8098c35deea6c6f09cb78176f08
- https://github.com/CESNET/libyang/issues/773
- https://bugzilla.redhat.com/show_bug.cgi?id=1793935
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
- https://nvd.nist.gov/vuln/detail/CVE-2019-20398