CVE-2019-19333 Information

Description

In all versions of libyang before 1.0-r5 a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \bits. An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw which would allow an attacker to cause a denial of service or possibly gain code execution.

CVSS Vector

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

Reference

https://access.redhat.com/errata/RHSA-2019:4360 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19333 https://github.com/CESNET/libyang/commit/f6d684ade99dd37b21babaa8a856f64faa1e2e0d https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PETB6TVMFV5KUD4IKVP2JPLBCYHUGSAJ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RL54JMS7XW7PI6JC4BFSNNLSX5AINQUL/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8