Vulnerability in Cesnet Libyang
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.014 (71.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/CESNET/libyang/issues/1452 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- security.gentoo.org/glsa/202107-54 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28905?
- CVE-2021-28905 is a high-severity vulnerability in Cesnet Libyang, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2021-05-20.
- How severe is CVE-2021-28905?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-28905 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.