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openSUSE 16 Security Update : apptainer (openSUSE-SU-2026:21927-1)

high Nessus Plugin ID 350144

Synopsis

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

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21927-1 advisory.

 Changes in apptainer:

 - Fix potential authentication bypass and deadlocks in the crypto/ssh library by updating golang.org/x/crypto to v0.56.0.
 CVE-2026-56854,CVE-2026-78662,CVE-2026-56855 (bsc#1278666)
 - Fix
 * a potential DoS via crash due to missing ':authority' and 'Host' headers in gRPC-Go xDS servers CVE-2026-84445 (bsc#1279033),
 * a potential heap memory exhaustion via HTTP/2 DATA frame fragmentation CVE-2026-84304 (bsc#1279236),
 * a potential bypass of authorization policies via mixed-case or canonical-case header matches due to an xDS RBAC HTTP filter implementation issue CVE-2026-84303 (bsc#1279333) by updating google.golang.org/grpc to v1.83.2

Tenable has extracted the preceding description block directly from the SUSE 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 apptainer and / or apptainer-leap packages.

See Also

https://bugzilla.suse.com/1278666

https://bugzilla.suse.com/1279033

https://bugzilla.suse.com/1279236

https://bugzilla.suse.com/1279333

https://www.suse.com/security/cve/CVE-2026-56854

https://www.suse.com/security/cve/CVE-2026-56855

https://www.suse.com/security/cve/CVE-2026-78662

https://www.suse.com/security/cve/CVE-2026-84303

https://www.suse.com/security/cve/CVE-2026-84304

https://www.suse.com/security/cve/CVE-2026-84445

Plugin Details

Severity: High

ID: 350144

File Name: openSUSE-2026-21927-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 9/25/2026

Updated: 9/25/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.39

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-2026-84303

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:H/I:N/A:N

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

CVSS Score Source: CVE-2026-78662

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-84445

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:apptainer-leap, p-cpe:/a:novell:opensuse:apptainer

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/21/2026

Vulnerability Publication Date: 8/28/2026

Reference Information

CVE: CVE-2026-56854, CVE-2026-56855, CVE-2026-78662, CVE-2026-84303, CVE-2026-84304, CVE-2026-84445