Detections
Analytics

Oracle Linux 8 : perl-YAML:1.24 (ELSA-2026-93471)

critical Nessus Plugin ID 376523

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2026-93471 advisory.

 - CVE-2017-20285 perl-YAML:1.24/perl-YAML: perl-yaml: Arbitrary destructor method execution via crafted YAML document destructor method execution via crafted YAML document
 - CVE-2019-25777 perl-YAML:1.24/perl-YAML: perl-yaml: Arbitrary code execution via unrestricted package variable assignment
 - CVE-2017-20285 perl-YAML:1.24/perl-YAML: perl-yaml: Arbitrary destructor method execution via crafted YAML document destructor method execution via crafted YAML document
 - CVE-2019-25777 perl-YAML:1.24/perl-YAML: perl-yaml: Arbitrary code execution via unrestricted package variable assignment

Tenable has extracted the preceding description block directly from the Oracle 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 affected perl-YAML package.

See Also

https://linux.oracle.com/errata/ELSA-2026-93471.html

Plugin Details

Severity: Critical

ID: 376523

File Name: oraclelinux_ELSA-2026-93471.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/5/2026

Updated: 11/5/2026

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.55

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2017-20285

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:perl-yaml

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/4/2026

Vulnerability Publication Date: 10/5/2026

Reference Information

CVE: CVE-2017-20285, CVE-2019-25777