Vulnerability Description
An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. Applications that use libyang to parse untrusted input yang files may crash.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cesnet | Libyang | 0.11 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1793922Issue TrackingPatchThird Party Advisory
- https://github.com/CESNET/libyang/commit/32fb4993bc8bb49e93e84016af3c10ea53964bePatchThird Party Advisory
- https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1Third Party Advisory
- https://github.com/CESNET/libyang/issues/723ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1793922Issue TrackingPatchThird Party Advisory
- https://github.com/CESNET/libyang/commit/32fb4993bc8bb49e93e84016af3c10ea53964bePatchThird Party Advisory
- https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1Third Party Advisory
- https://github.com/CESNET/libyang/issues/723ExploitThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
FAQ
What is CVE-2019-20392?
CVE-2019-20392 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defi...
How severe is CVE-2019-20392?
CVE-2019-20392 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-20392?
Check the references section above for vendor advisories and patch information. Affected products include: Cesnet Libyang.