Vulnerability · Published May 20, 2021 · Assigned by mitre
CVE-2021-28905
High 7.5
In plain English
A high-severity security flaw in the libyang package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.4%top 27.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | libyang | 3.4.2+dfsg-2 | DEBIAN-CVE-2021-28905 |
| Debian:14 | libyang | 3.4.2+dfsg-2 | DEBIAN-CVE-2021-28905 |
Affected products (as reported)
References
- https://github.com/CESNET/libyang/issues/1452 x_refsource_CONFIRM
- GLSA-202107-54 vendor-advisory, x_refsource_GENTOO