CVE-2021-28904

HIGH

libyang <= 1.0.225 - Denial of Service via Unchecked Return Value in ext_get_plugin()

Title source: llm

Description

In function ext_get_plugin() in libyang <= v1.0.225, it doesn't 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.

References (2)

Core 2

Core References

Exploit, Issue Tracking, Third Party Advisory x_refsource_confirm

https://github.com/CESNET/libyang/issues/1451

Third Party Advisory vendor-advisory x_refsource_gentoo

https://security.gentoo.org/glsa/202107-54

Scores

CVSS v3 7.5

EPSS 0.0141

EPSS Percentile 69.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-252

Status published

Products (1)

cesnet/libyang < 1.0.225

Published May 20, 2021

Tracked Since Feb 18, 2026