CVE-2019-20391 Information

Description

An invalid memory access flaw is present in libyang before v1.0-r3 in the function resolve_feature_value() when an if-feature statement is used inside a bit. 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://github.com/CESNET/libyang/commit/bdb596ddc07596fa212f231135b87d0b9178f6f8 https://github.com/CESNET/libyang/compare/v1.0-r2…v1.0-r3 https://bugzilla.redhat.com/show_bug.cgi?id=1793934 https://github.com/CESNET/libyang/issues/772

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