What is the severity of CVE-2021-28906?

CVE-2021-28906 has been assigned a medium severity rating due to the potential for application crashes.

How do I fix CVE-2021-28906?

To fix CVE-2021-28906, upgrade libyang to version 1.0.226 or later, which contains the necessary security patches.

What software is affected by CVE-2021-28906?

CVE-2021-28906 affects libyang versions up to and including 1.0.225.

What are the potential consequences of CVE-2021-28906?

The consequences of CVE-2021-28906 include application crashes that can disrupt service continuity.

Is CVE-2021-28906 exploitable remotely?

CVE-2021-28906 may be exploitable remotely depending on how libyang is integrated into applications exposed to untrusted input.

Vulnerability/
CVE-2021-28906

high

7.5

CWE

252

20/5/2021

3/8/2024

CVE-2021-28906

First published: Thu May 20 2021(Updated: )

In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
CESNET libyang	<=1.0.225

Remedy

https://github.com/CESNET/libyang/issues/1455

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-28906?
CVE-2021-28906 has been assigned a medium severity rating due to the potential for application crashes.
How do I fix CVE-2021-28906?
To fix CVE-2021-28906, upgrade libyang to version 1.0.226 or later, which contains the necessary security patches.
What software is affected by CVE-2021-28906?
CVE-2021-28906 affects libyang versions up to and including 1.0.225.
What are the potential consequences of CVE-2021-28906?
The consequences of CVE-2021-28906 include application crashes that can disrupt service continuity.
Is CVE-2021-28906 exploitable remotely?
CVE-2021-28906 may be exploitable remotely depending on how libyang is integrated into applications exposed to untrusted input.

agent/references
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/severity
agent/weakness
agent/remedy
agent/author
agent/last-modified-date
agent/description
agent/first-publish-date
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/cesnet
canonical/cesnet libyang
version/cesnet libyang/1.0.225

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Contact

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Frequently Asked Questions

What is the severity of CVE-2021-28906?
CVE-2021-28906 has been assigned a medium severity rating due to the potential for application crashes.
How do I fix CVE-2021-28906?
To fix CVE-2021-28906, upgrade libyang to version 1.0.226 or later, which contains the necessary security patches.
What software is affected by CVE-2021-28906?
CVE-2021-28906 affects libyang versions up to and including 1.0.225.
What are the potential consequences of CVE-2021-28906?
The consequences of CVE-2021-28906 include application crashes that can disrupt service continuity.
Is CVE-2021-28906 exploitable remotely?
CVE-2021-28906 may be exploitable remotely depending on how libyang is integrated into applications exposed to untrusted input.