CVE Vulnerabilities

CVE-2021-28904

Unchecked Return Value

Published: May 20, 2021 | Modified: Apr 05, 2022
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

In function ext_get_plugin() in libyang <= v1.0.225, it doesnt check whether the value of revision is NULL. If revision is NULL, the operation of strcmp(revision, ext_plugins[u].revision) will lead to a crash.

Weakness

The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.

Affected Software

Name Vendor Start Version End Version
Libyang Cesnet * 1.0.225

Potential Mitigations

References