AlmaLinux 8 : container-tools:rhel8 (ALSA-2026:38504)

high Nessus Plugin ID 327433

Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:38504 advisory.

* net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)
* golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835)
* podman: Podman: Information disclosure via malicious container image environment variables (CVE-2026-57231)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 packages.

See Also

https://access.redhat.com/errata/RHSA-2026:38504

https://errata.almalinux.org/8/ALSA-2026-38504.html

Plugin Details

Severity: High

ID: 327433

File Name: alma_linux_ALSA-2026-38504.nasl

Version: 1.1

Type: Local

Published: 7/16/2026

Updated: 7/16/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.18

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-33811

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:alma:linux:podman-catatonit, p-cpe:/a:alma:linux:buildah, p-cpe:/a:alma:linux:containers-common, p-cpe:/a:alma:linux:oci-seccomp-bpf-hook, p-cpe:/a:alma:linux:skopeo-tests, p-cpe:/a:alma:linux:criu, p-cpe:/a:alma:linux:skopeo, p-cpe:/a:alma:linux:conmon, p-cpe:/a:alma:linux:podman, p-cpe:/a:alma:linux:python3-podman, p-cpe:/a:alma:linux:libslirp, p-cpe:/a:alma:linux:runc, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8, p-cpe:/a:alma:linux:crun, p-cpe:/a:alma:linux:udica, p-cpe:/a:alma:linux:criu-libs, p-cpe:/a:alma:linux:container-selinux, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:aardvark-dns, p-cpe:/a:alma:linux:libslirp-devel, p-cpe:/a:alma:linux:slirp4netns, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::resilientstorage, cpe:/o:alma:linux:8::baseos, p-cpe:/a:alma:linux:netavark, p-cpe:/a:alma:linux:podman-tests, p-cpe:/a:alma:linux:toolbox, cpe:/o:alma:linux:8::sap, p-cpe:/a:alma:linux:toolbox-tests, p-cpe:/a:alma:linux:podman-docker, p-cpe:/a:alma:linux:podman-gvproxy, p-cpe:/a:alma:linux:fuse-overlayfs, p-cpe:/a:alma:linux:crit, p-cpe:/a:alma:linux:cockpit-podman, p-cpe:/a:alma:linux:podman-remote, p-cpe:/a:alma:linux:criu-devel, cpe:/o:alma:linux:8::appstream, p-cpe:/a:alma:linux:python3-criu, p-cpe:/a:alma:linux:containernetworking-plugins, p-cpe:/a:alma:linux:buildah-tests, p-cpe:/a:alma:linux:podman-plugins

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/13/2026

Vulnerability Publication Date: 5/7/2026

Reference Information

CVE: CVE-2026-33811, CVE-2026-39835, CVE-2026-57231

CWE: 1341, 476, 914

IAVB: 2026-B-0120

RHSA: 2026:38504