RHEL 8 : Red Hat OpenStack Platform 16.2 security advisory (Important) (RHSA-2026:54757)

high Nessus Plugin ID 335312

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:54757 advisory.

Red Hat OpenStack Platform provides the facilities for building, deploying and monitoring a private or public infrastructure-as-a-service (IaaS) cloud running on commonly available physical hardware.

Security Fix(es):

* crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate (CVE-2025-61729)

* openstack-nova-compute: Arbitrary Host File Overwrite via Unconstrained qemu-img Format Handling in OpenStack Nova (CVE-2026-24708)

* pyasn1: pyasn1: Denial of Service due to memory exhaustion from malformed RELATIVE-OID (CVE-2026-23490)

* golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)

* crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption (CVE-2025-68121)

* openstack-glance: OpenStack Glance: Server-Side Request Forgery leading to unauthorized internal network access (CVE-2026-34881)

* crypto/x509: Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137)

* net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)

* google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186)

* etcd: etcd: Authorization bypass allows information disclosure and denial of service (CVE-2026-33413)

* crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281)

* crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810)

* golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

* crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283)

* crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)

* net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)

* golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)

* erlang: Erlang OTP public_key: Certificate chain forgery via improper trust chain validation (CVE-2026-42789)

* crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145)

* oslo.messaging: openstack: OpenStack oslo.messaging: Man-in-the-middle attack via improper TLS hostname verification (CVE-2026-44393)

* erlang: Erlang OTP public_key: Certificate validation bypass allows hostname spoofing (CVE-2026-42790)

* openstack-keystone: OpenStack Keystone: Unauthorized access and privilege escalation via AWS signature validation flaw (CVE-2025-65073)

* OpenStack Keystone: OpenStack Keystone: Unauthorized cross-project access due to improper validation in EC2 credential creation (CVE-2026-43001)

* openstack-keystone: OpenStack Keystone: Privilege escalation through EC2 credential creation (CVE-2026-33551)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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: High

ID: 335312

File Name: redhat-RHSA-2026-54757.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/14/2026

Updated: 8/14/2026

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

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2025-68121

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9

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:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.8

Threat Score: 7.8

Threat Vector: CVSS:4.0/E:P

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

CVSS Score Source: CVE-2026-33413

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:collectd-sensubility, p-cpe:/a:redhat:enterprise_linux:erlang-asn1, p-cpe:/a:redhat:enterprise_linux:erlang-compiler, p-cpe:/a:redhat:enterprise_linux:erlang-crypto, p-cpe:/a:redhat:enterprise_linux:erlang-eldap, p-cpe:/a:redhat:enterprise_linux:erlang-erts, p-cpe:/a:redhat:enterprise_linux:erlang-hipe, p-cpe:/a:redhat:enterprise_linux:erlang-inets, p-cpe:/a:redhat:enterprise_linux:erlang-kernel, p-cpe:/a:redhat:enterprise_linux:erlang-mnesia, p-cpe:/a:redhat:enterprise_linux:erlang-os_mon, p-cpe:/a:redhat:enterprise_linux:erlang-parsetools, p-cpe:/a:redhat:enterprise_linux:erlang-public_key, p-cpe:/a:redhat:enterprise_linux:erlang-runtime_tools, p-cpe:/a:redhat:enterprise_linux:erlang-sasl, p-cpe:/a:redhat:enterprise_linux:erlang-snmp, p-cpe:/a:redhat:enterprise_linux:erlang-ssl, p-cpe:/a:redhat:enterprise_linux:erlang-stdlib, p-cpe:/a:redhat:enterprise_linux:erlang-syntax_tools, p-cpe:/a:redhat:enterprise_linux:erlang-tools, p-cpe:/a:redhat:enterprise_linux:erlang-xmerl, p-cpe:/a:redhat:enterprise_linux:erlang, p-cpe:/a:redhat:enterprise_linux:etcd, p-cpe:/a:redhat:enterprise_linux:openstack-glance, p-cpe:/a:redhat:enterprise_linux:openstack-keystone, p-cpe:/a:redhat:enterprise_linux:openstack-nova-api, p-cpe:/a:redhat:enterprise_linux:openstack-nova-common, p-cpe:/a:redhat:enterprise_linux:openstack-nova-compute, p-cpe:/a:redhat:enterprise_linux:openstack-nova-conductor, p-cpe:/a:redhat:enterprise_linux:openstack-nova-console, p-cpe:/a:redhat:enterprise_linux:openstack-nova-migration, p-cpe:/a:redhat:enterprise_linux:openstack-nova-novncproxy, p-cpe:/a:redhat:enterprise_linux:openstack-nova-scheduler, p-cpe:/a:redhat:enterprise_linux:openstack-nova-serialproxy, p-cpe:/a:redhat:enterprise_linux:openstack-nova-spicehtml5proxy, p-cpe:/a:redhat:enterprise_linux:openstack-nova, p-cpe:/a:redhat:enterprise_linux:python-oslo-messaging, p-cpe:/a:redhat:enterprise_linux:python-pyasn1, p-cpe:/a:redhat:enterprise_linux:python3-glance, p-cpe:/a:redhat:enterprise_linux:python3-keystone, p-cpe:/a:redhat:enterprise_linux:python3-nova, p-cpe:/a:redhat:enterprise_linux:python3-oslo-messaging, p-cpe:/a:redhat:enterprise_linux:python3-pyasn1-modules, p-cpe:/a:redhat:enterprise_linux:python3-pyasn1

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/13/2026

Vulnerability Publication Date: 11/17/2025

Reference Information

CVE: CVE-2025-61726, CVE-2025-61729, CVE-2025-65073, CVE-2025-68121, CVE-2026-23490, CVE-2026-24708, CVE-2026-25679, CVE-2026-27137, CVE-2026-27145, CVE-2026-32280, CVE-2026-32281, CVE-2026-32282, CVE-2026-32283, CVE-2026-33186, CVE-2026-33413, CVE-2026-33551, CVE-2026-33810, CVE-2026-33811, CVE-2026-34881, CVE-2026-39821, CVE-2026-42789, CVE-2026-42790, CVE-2026-43001, CVE-2026-44393

CWE: 1050, 1286, 1288, 1289, 1341, 266, 295, 306, 367, 551, 606, 73, 764, 770, 863, 918

RHSA: 2026:54757

Detections

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