VDB
CVE-2019-20397
CVE-2019-20397
PUBLISHED
A double-free is present in libyang before v1.0-r1 in the function yyparse() when an organization field is not terminated. 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.
EPSS 0.29% · 52.9th percentile
Risk Scores
EPSS Score
0.29%
52.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:20.04:LTS | libyang | 0, 0.16.105-1, 0.16.105-2 |
Exploit Intelligence
- https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 (circl)
- https://github.com/CESNET/libyang/issues/739 (circl)
- https://github.com/CESNET/libyang/commit/88bd6c548ba79bce176cd875e9b56e7e0ef4d8d4 (circl)
- https://bugzilla.redhat.com/show_bug.cgi?id=1793928 (circl)
- [debian-lts-announce] 20230919 [SECURITY] [DLA 3572-1] libyang security update (circl)
Timeline
- Jan 22, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-20397 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1793928 third-party-advisory
- https://github.com/CESNET/libyang/commit/88bd6c548ba79bce176cd875e9b56e7e0ef4d8d4 third-party-advisory
- https://github.com/CESNET/libyang/issues/739 third-party-advisory
- https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20397 third-party-advisory