CVE-2019-20397

high

Description

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.

References

https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html

https://github.com/CESNET/libyang/issues/739

https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1

https://github.com/CESNET/libyang/commit/88bd6c548ba79bce176cd875e9b56e7e0ef4d8d4

https://bugzilla.redhat.com/show_bug.cgi?id=1793928

Details

Source: Mitre, NVD

Published: 2020-01-22

Updated: 2023-09-19

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High