CVE-2021-28904
HIGHCVSS 7.5/10EPSS 1.41%
Last modified
CVE-2021-28904 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.41% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cesnet | Libyang | <= 1.0.225 |
References
- https://github.com/CESNET/libyang/issues/1451Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202107-54Third Party Advisory
- https://github.com/CESNET/libyang/issues/1451Exploit, Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202107-54Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-28904?
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.
How severe is CVE-2021-28904?
CVE-2021-28904 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.
How do I fix CVE-2021-28904?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-28904?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST