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Amazon Linux 2023 : ruby3.4, ruby3.4-bundled-gems, ruby3.4-default-gems (ALAS2023-2026-3413)

critical Nessus Plugin ID 377895

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3413 advisory.

 An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0.10, 19.1 before 19.1.9, 19.2 before 19.2.9, 19.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server due to integer overflow when compiling a specially crafted regular expression.
 (CVE-2026-110264)

 RubyGems fails to re-validate path containment after filesystem symlink resolution during gem extraction.
 When a pre-existing symlink inside the destination directory points outside the extraction root, extracted files that appear to be written under the destination directory can instead be written outside of it, breaking the extraction safety boundary. The fix resolves the real path of the parent directory before writing and raises Gem::Package::PathError if it escapes the destination directory. (CVE-2026-82455)

 GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to a double free issue when parsing a specially crafted regular expression in a CI/CD configuration. (CVE-2026-89078)

 GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.7, 19.3 before 19.3.3, and 19.4 before 19.4.1 that under certain conditions could have allowed an authenticated user to execute arbitrary code on the GitLab server due to an integer overflow issue when compiling a specially crafted regular expression in a CI/CD configuration. (CVE-2026-93577)

 GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an unauthenticated user to execute arbitrary code on the GitLab server via a specially crafted regular expression in a CI/CD configuration, due to insufficient regular expression validation. (CVE-2026-97229)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'dnf update ruby3.4 --releasever 2023.12.20261109' or or 'dnf update --advisory ALAS2023-2026-3413 --releasever 2023.12.20261109' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-3413.html

https://alas.aws.amazon.com/faqs.html

https://explore.alas.aws.amazon.com/CVE-2026-110264.html

https://explore.alas.aws.amazon.com/CVE-2026-82455.html

https://explore.alas.aws.amazon.com/CVE-2026-89078.html

https://explore.alas.aws.amazon.com/CVE-2026-93577.html

https://explore.alas.aws.amazon.com/CVE-2026-97229.html

Plugin Details

Severity: Critical

ID: 377895

File Name: al2023_ALAS2023-2026-3413.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/9/2026

Updated: 11/9/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.3

Percentile: 99.83

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

CVSS Score Source: CVE-2026-97229

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9.5

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:ruby3.4-bundled-gems-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-bundled-gems, p-cpe:/a:amazon:linux:ruby3.4-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-debugsource, p-cpe:/a:amazon:linux:ruby3.4-default-gems, p-cpe:/a:amazon:linux:ruby3.4-devel, p-cpe:/a:amazon:linux:ruby3.4-doc, p-cpe:/a:amazon:linux:ruby3.4-libs-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-libs, p-cpe:/a:amazon:linux:ruby3.4-rubygem-bigdecimal-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-rubygem-bigdecimal, p-cpe:/a:amazon:linux:ruby3.4-rubygem-bundler, p-cpe:/a:amazon:linux:ruby3.4-rubygem-io-console-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-rubygem-io-console, p-cpe:/a:amazon:linux:ruby3.4-rubygem-irb, p-cpe:/a:amazon:linux:ruby3.4-rubygem-json-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-rubygem-json, p-cpe:/a:amazon:linux:ruby3.4-rubygem-minitest, p-cpe:/a:amazon:linux:ruby3.4-rubygem-power_assert, p-cpe:/a:amazon:linux:ruby3.4-rubygem-psych-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-rubygem-psych, p-cpe:/a:amazon:linux:ruby3.4-rubygem-racc-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-rubygem-racc, p-cpe:/a:amazon:linux:ruby3.4-rubygem-rake, p-cpe:/a:amazon:linux:ruby3.4-rubygem-rbs-debuginfo, p-cpe:/a:amazon:linux:ruby3.4-rubygem-rbs, p-cpe:/a:amazon:linux:ruby3.4-rubygem-rdoc, p-cpe:/a:amazon:linux:ruby3.4-rubygem-rexml, p-cpe:/a:amazon:linux:ruby3.4-rubygem-rss, p-cpe:/a:amazon:linux:ruby3.4-rubygem-test-unit, p-cpe:/a:amazon:linux:ruby3.4-rubygem-typeprof, p-cpe:/a:amazon:linux:ruby3.4-rubygems-devel, p-cpe:/a:amazon:linux:ruby3.4-rubygems, p-cpe:/a:amazon:linux:ruby3.4

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/9/2026

Vulnerability Publication Date: 9/23/2026

CISA Known Exploited Vulnerability Due Dates: 11/1/2026

Reference Information

CVE: CVE-2026-110264, CVE-2026-89078, CVE-2026-93577, CVE-2026-97229