Rocky Linux 8 [CIQ] Security Update: cpp / cpp-debuginfo / gcc / gcc-c++ / gcc-c++-debuginfo / etc (crlsa-2021_4587)

high Nessus Plugin ID 358590

Synopsis

The Rocky Linux host is missing one or more security updates.

Description

The Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-2021_4587 advisory.

* Developer environment: Unicode's bidirectional (BiDi) override characters can cause trojan source attacks (CVE-2021-42574)

The following changes were introduced in gcc in order to facilitate detection of BiDi Unicode characters:

This update implements a new warning option -Wbidirectional to warn about possibly dangerous bidirectional characters.

There are three levels of warning supported by gcc:
-Wbidirectional=unpaired, which warns about improperly terminated BiDi contexts. (This is the default.)
-Wbidirectional=none, which turns the warning off.
-Wbidirectional=any, which warns about any use of bidirectional characters.

Tenable has extracted the preceding description block directly from the CIQ security advisory.

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

Solution

Update the affected packages based on the guidance in CIQ advisory crlsa-2021_4587.

Plugin Details

Severity: High

ID: 358590

File Name: ciq_rocky_linux_8_crlsa-2021_4587.nasl

Version: 1.1

Type: Local

Family: Rocky Linux Local Security Checks

Published: 10/1/2026

Updated: 10/1/2026

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

Risk Information

VPR

Risk Factor: High

Score: 7.7

Percentile: 99.02

Vendor

Vendor Severity: Unknown

CVSS v2

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 4

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

CVSS Score Source: CVE-2021-42574

CVSS v3

Risk Factor: High

Base Score: 8.3

Temporal Score: 7.5

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

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

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/OS/extended-third-party

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/10/2021

Vulnerability Publication Date: 10/28/2021

Reference Information

CVE: CVE-2021-42574

Detections

Analytics