SUSE SLES15: himmelblau / himmelblau-sshd-config / himmelblau-sso / etc (SUSE-SU-2026:3576-1)

critical Nessus Plugin ID 335091

Synopsis

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

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3576-1 advisory.

Security fixes:

- CVE-2026-41676: openssl: `Deriver:derive` and `PkeyCtxRef:derive` can overflow short buffers on OpenSSL 1.1.1 (bsc#1270182).
- CVE-2026-41677: openssl: out-of-bounds read in PEM password callback when returning an oversized length (bsc#1270613).
- CVE-2026-41678: openssl: OOB write due to incorrect bounds assertion in `aes::unwrap_key()` (bsc#1270707).
- CVE-2026-41681: openssl: stack corruption due to `MdCtxRef::digest_final()` writing past caller buffer with no length check (bsc#1270794).
- CVE-2026-41898: openssl: information leak to network peers due to unchecked callback-returned length in PSK and cookie generate trampolines (bsc#1270830).
- CVE-2026-42327: openssl: undefined behavior in `X509Ref::ocsp_responders` when processing certificates with non-UTF-8 OCSP URLs (bsc#1270520).
- CVE-2026-44662: openssl: heap buffer overflow when encrypting with AES key-wrap-with-padding (bsc#1270939).
- CVE-2026-45784: out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD ciphers in rust-openssl crate (bsc#1270985).
- GHSA-4f5j-9xgm-8pvr: arbitrary HTTP or HTTPS URL classified as an Office document based on an attacker- controlled file query parameters and forwarded to an Electron application (bsc#1273910).
- GHSA-6cq7-jcwm-cpmr: directory-provided RFC2307 user identifiers accepted without exclusion of systemd's dynamic-user range allows for daemon impersonation and command execution through the task helper (bsc#1273911).
- GHSA-6gp8-pp9v-gx45: daemon acts on Hello PIN enrollment requests whose identity claims it never cryptographically verifies (bsc#1273912).

Other fixes:

- Version 2.3.14+git0.e23b4c54:

* fix(nss): avoid locked shadow entries

- Version 2.3.14:

* fix(deps): update libhimmelblau lockfile
* fix(pam): make account denials terminal
* debian: make the pam_allow_groups denial terminal in the account phase

- Version 2.3.13:

* Update cargo vet audits for backport

- Version 2.3.12+git0.9d56c6f1:

* Fix cargo-fuzz install in fuzz CI
* cargo vet
* Update ldap3_proto to 0.7.1

- Version 2.3.12:

* Update cargo vet audits for backport
* Remove invalid himmelblau.conf example info
* Fix SSHd configuration load order on Fedora/RHEL systems
* himmelblau-init-hsm-pin: don't bind the hsm-pin to PCR7
* qr-greeter: support GNOME Shell 50
* Update libhimmelblau to latest version
* deps(rust): bump tonic in the all-cargo-updates group across 1 directory
* cargo audit

- Version 2.3.11+git0.c802b25f:

* Update cargo vet audits for backport
* Reject auth when token spn local part differs from requested account_id
* Update libhimmelblau to latest version
* deps(rust): bump the all-cargo-updates group with 19 updates
* cargo vet

- Version 2.3.10:

* nss/pam: bail out early when SYSTEMD_ACTIVATION_UNIT points to himmelblau
* selinux: allow unconfined_service_t to search himmelblaud_t dirs
* idprovider: release providers lock before async alias lookup

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 packages.

Plugin Details

Severity: Critical

ID: 335091

File Name: suse_SU-2026-3576-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 8/13/2026

Updated: 8/13/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.92

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-41677

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.3

Threat Score: 8.1

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-41681

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:himmelblau-sshd-config, p-cpe:/a:novell:suse_linux:himmelblau-sso, p-cpe:/a:novell:suse_linux:himmelblau, p-cpe:/a:novell:suse_linux:libnss_himmelblau2, p-cpe:/a:novell:suse_linux:pam-himmelblau

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: 8/11/2026

Vulnerability Publication Date: 4/22/2026

Reference Information

CVE: CVE-2026-41676, CVE-2026-41677, CVE-2026-41678, CVE-2026-41681, CVE-2026-41898, CVE-2026-42327, CVE-2026-44662, CVE-2026-45784

SuSE: SUSE-SU-2026:3576-1

Detections

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