CVE-2021-28905
HIGHCVSS 7.5/10EPSS 1.42%
Last modified
CVE-2021-28905 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).. EPSS estimates a 1.42% chance of exploitation in the next 30 days.
Description
In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).
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/1452Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202107-54Third Party Advisory
- https://github.com/CESNET/libyang/issues/1452Exploit, Issue Tracking, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202107-54Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-28905?
In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).
How severe is CVE-2021-28905?
CVE-2021-28905 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.42% probability of exploitation in the next 30 days.
How do I fix CVE-2021-28905?
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-2021-28905?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST