CVE-2019-20393
8.8
HIGH
CVSS 3.1
EPSS 0.21%
Description
A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.
How to fix CVE-2019-20393
To remediate CVE-2019-20393, upgrade the affected package to a fixed version below.
- Debian/libyang—upgrade to 1.0.176-1 or later
Is CVE-2019-20393 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.0.176-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |