RHEL 8 : libyang (RHSA-2019:4360)

critical Nessus Plugin ID 132382

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Synopsis

The remote Red Hat host is missing one or more security updates for libyang.

Description

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2019:4360 advisory.

The libyang package provides a library for YANG data modeling language. libyang is a YANG data modelling language parser and toolkit written (and providing API) in C. The library is used e.g. in libnetconf2, Netopeer2, sysrepo and FRRouting projects.

Security Fix(es):

* libyang: stack-based buffer overflow in make_canonical when bits leaf type is used (CVE-2019-19333)

* libyang: stack-based buffer overflow in make_canonical when identityref leaf type is used (CVE-2019-19334)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

IMPORTANT:

The libyang-devel sub-package has recently been removed from the AppStream repository. If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL libyang package based on the guidance in RHSA-2019:4360.

Plugin Details

Severity: Critical

ID: 132382

File Name: redhat-RHSA-2019-4360.nasl

Version: 1.5

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 12/23/2019

Updated: 11/7/2024

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2019-19334

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:rhel_eus:8.1, p-cpe:/a:redhat:enterprise_linux:libyang, cpe:/o:redhat:enterprise_linux:8

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 12/23/2019

Vulnerability Publication Date: 12/6/2019

Reference Information

CVE: CVE-2019-19333, CVE-2019-19334

CWE: 121

RHSA: 2019:4360

Detections

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