6.5

CVE-2019-20398

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Cesnet ≫ Libyang Version0.11 Updater1
Cesnet ≫ Libyang Version0.11 Updater2
Cesnet ≫ Libyang Version0.12 Updater1
Cesnet ≫ Libyang Version0.12 Updater2
Cesnet ≫ Libyang Version0.13 Updater1
Cesnet ≫ Libyang Version0.13 Updater2
Cesnet ≫ Libyang Version0.14 Updater1
Cesnet ≫ Libyang Version0.15 Updater1
Cesnet ≫ Libyang Version0.16 Updater1
Cesnet ≫ Libyang Version0.16 Updater2
Cesnet ≫ Libyang Version0.16 Updater3
Cesnet ≫ Libyang Version1.0 Updater1
Cesnet ≫ Libyang Version1.0 Updater2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.82% 0.759
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvd@nist.gov 4.3 8.6 2.9
AV:N/AC:M/Au:N/C:N/I:N/A:P
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
https://bugzilla.redhat.com/show_bug.cgi?id=1793935
Patch
Third Party Advisory
Issue Tracking
https://github.com/CESNET/libyang/commit/7852b272ef77f8098c35deea6c6f09cb78176f08
Patch
https://github.com/CESNET/libyang/issues/773
Third Party Advisory
Exploit