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CVE-2021-28904

Published: 20 May 2021

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.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
libyang
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needed

hirsute Ignored
(end of life)
jammy Not vulnerable
(1.0.225-1.1)
kinetic Not vulnerable
(1.0.225-1.1)
trusty Does not exist

upstream
Released (1.0.225-1)
xenial Ignored
(end of standard support)
impish Not vulnerable
(1.0.225-1.1)
groovy Ignored
(end of life)
lunar Does not exist

mantic Does not exist

Patches:
upstream: https://github.com/CESNET/libyang/commit/59a0bff1a5a2f0a0eac07e4bf94d4aea9dd3708d

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H