Detections
Analytics
Amazon Linux 2023 : ruby4.0, ruby4.0-bundled-gems, ruby4.0-default-gems (ALAS2023-2026-3400)
critical Nessus Plugin ID 377910
Synopsis
The remote Amazon Linux 2023 host is missing a security update.Description
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3400 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 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 ruby4.0 --releasever 2023.12.20261109' or or 'dnf update --advisory ALAS2023-2026-3400 --releasever 2023.12.20261109' to update your system.See Also
https://alas.aws.amazon.com//AL2023/ALAS2023-2026-3400.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
Plugin Details
Severity: Critical
ID: 377910
File Name: al2023_ALAS2023-2026-3400.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:ruby4.0-bundled-gems-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-bundled-gems, p-cpe:/a:amazon:linux:ruby4.0-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-debugsource, p-cpe:/a:amazon:linux:ruby4.0-default-gems, p-cpe:/a:amazon:linux:ruby4.0-devel, p-cpe:/a:amazon:linux:ruby4.0-doc, p-cpe:/a:amazon:linux:ruby4.0-libs-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-libs, p-cpe:/a:amazon:linux:ruby4.0-rubygem-bigdecimal-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-rubygem-bigdecimal, p-cpe:/a:amazon:linux:ruby4.0-rubygem-bundler, p-cpe:/a:amazon:linux:ruby4.0-rubygem-io-console-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-rubygem-io-console, p-cpe:/a:amazon:linux:ruby4.0-rubygem-irb, p-cpe:/a:amazon:linux:ruby4.0-rubygem-json-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-rubygem-json, p-cpe:/a:amazon:linux:ruby4.0-rubygem-minitest, p-cpe:/a:amazon:linux:ruby4.0-rubygem-power_assert, p-cpe:/a:amazon:linux:ruby4.0-rubygem-psych-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-rubygem-psych, p-cpe:/a:amazon:linux:ruby4.0-rubygem-racc-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-rubygem-racc, p-cpe:/a:amazon:linux:ruby4.0-rubygem-rake, p-cpe:/a:amazon:linux:ruby4.0-rubygem-rbs-debuginfo, p-cpe:/a:amazon:linux:ruby4.0-rubygem-rbs, p-cpe:/a:amazon:linux:ruby4.0-rubygem-rdoc, p-cpe:/a:amazon:linux:ruby4.0-rubygem-rexml, p-cpe:/a:amazon:linux:ruby4.0-rubygem-rss, p-cpe:/a:amazon:linux:ruby4.0-rubygem-test-unit, p-cpe:/a:amazon:linux:ruby4.0-rubygem-typeprof, p-cpe:/a:amazon:linux:ruby4.0-rubygems-devel, p-cpe:/a:amazon:linux:ruby4.0-rubygems, p-cpe:/a:amazon:linux:ruby4.0
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