CVE-2019-20395 Information

Description

A stack consumption issue is present in libyang before v1.0-r1 due to the self-referential union type containing leafrefs. Applications that use libyang to parse untrusted input yang files may crash.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1793924 https://github.com/CESNET/libyang/commit/4e610ccd87a2ba9413819777d508f71163fcc237 https://github.com/CESNET/libyang/compare/v0.16-r3…v1.0-r1 https://github.com/CESNET/libyang/issues/724

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5