Cyber Resilience

CVE-2023-1636

Redhat Openstack Platform 16.1 … 17.0

Published
24 September 2023
Modified
21 November 2024
CVSS Score v3.1 6.0
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
EPSS Score 0.0048 39th percentile
Risk Priority 44 floored blend · peak EPSS

Summary

CVE-2023-1636 is a medium-severity Improper Isolation or Compartmentalization (CWE-653) vulnerability in Redhat Openstack Platform. Its CVSS base score is 6.0 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Escape to Host (T1611); ranked at the 39th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A06:2025 Insecure Design

EU & UK References

Vulnerability Data

A vulnerability was found in OpenStack Barbican containers. This vulnerability is only applicable to deployments that utilize an all-in-one configuration. Barbican containers share the same CGROUP, USER, and NET namespace with the host system and other OpenStack services. If any…

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service is compromised, it could gain access to the data transmitted to and from Barbican.

CWE(s)
CWE-653NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1611 Escape to Host Privilege Escalation
Adversaries may break out of a container or virtualized environment to gain access to the underlying host.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1134 Access Token Manipulation Stealth
Adversaries may modify access tokens to operate under a different user or system security context to perform actions and bypass access controls.
attack.mitre.org →
T1548 Abuse Elevation Control Mechanism Privilege Escalation
Adversaries may circumvent mechanisms designed to control privilege elevation to gain higher-level permissions.
attack.mitre.org →
T1548.001 Setuid and Setgid Privilege Escalation
An adversary may abuse configurations where an application has the setuid or setgid bits set in order to get code running in a different (and possibly more privileged) user’s context.
attack.mitre.org →
T1055 Process Injection Stealth
Adversaries may inject code into processes in order to evade process-based defenses as well as possibly elevate privileges.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-1633Same product: Openstack Barbican
CVE-2026-4325Same vendor: Redhat
CVE-2026-4282Same vendor: Redhat
CVE-2025-12805Same vendor: Redhat
CVE-2023-1625Same product: Redhat Openstack Platform
CVE-2024-7319Same product: Redhat Openstack Platform
CVE-2025-3717Shared CWE-653
CVE-2024-0135Shared CWE-653
CVE-2025-34201Shared CWE-653
CVE-2025-41688Shared CWE-653

Affected Assets

openstack
barbican
all versions
redhat
openstack platform
16.1, 16.2, 17.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

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Detect
Catch it (NIST detect / respond)

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Harden
Shrink the surface (DISA STIG)
  • 8 hardening rules · 7 OS baselines
Validate
Prove the fix (OWASP ASVS)

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Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-20 Use of External Systems
addresses: CWE-653

Defines isolation boundaries by specifying which external systems may access or process organization data.

AC-4 Information Flow Enforcement
addresses: CWE-653

Maintains isolation and compartmentalization by restricting flows between security domains or levels.

CA-9 Internal System Connections
addresses: CWE-653

Reviewing the continued need for connections supports isolation and compartmentalization.

PE-23 Facility Location
addresses: CWE-653

Locating systems away from hazards improves isolation and compartmentalization from external physical or environmental threats.

PL-7 Concept of Operations
addresses: CWE-653

The CONOPS must articulate isolation and compartmentalization expectations for security and privacy, making architectural failures in separation of duties or domains harder to overlook.

PL-8 Security and Privacy Architectures
addresses: CWE-653

Security architectures commonly incorporate isolation and compartmentalization strategies to limit the impact of compromises.

PM-19 Privacy Program Leadership Role
addresses: CWE-653

Organization-wide privacy program leadership ensures proper isolation and compartmentalization of personal data.

PM-24 Data Integrity Board
addresses: CWE-653

Oversight ensures data-matching activities maintain required isolation between distinct data sets and authorized user communities.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 full match
prevents

Least-privilege policy directly enforces separation of privilege levels and access rights.

PR.IR-01 mostly match
prevents

Network and environment segmentation implements the isolation required to prevent unauthorized cross-compartment access.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.3 Segregation of duties mostly match
degrades

Segregation of duties directly enforces separation of privilege levels and functions.

A.8.22 Segregation of networks mostly match
prevents

Network segregation is a classic technical control for isolating different privilege domains.

A.8.27 Secure system architecture and engineering principles mostly match
prevents

Secure system architecture principles explicitly call for isolation and least-privilege boundaries.

A.8.31 Separation of development, test and production environments mostly match
prevents

Separation of development, test and production environments is a direct application of compartmentalization.

A.5.15 Access control partial match
degrades

Access control policies establish the boundaries that isolation must enforce.

A.5.18 Access rights partial match
degrades

Managing access rights is the operational mechanism for compartmentalizing privileges.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 9 (1 rule)
  • V-271452 OL 9 must use a Linux Security Module configured to enforce limits on system services. prevents CWE-653
RHEL 9 (2 rules)
  • V-258078 RHEL 9 must use a Linux Security Module configured to enforce limits on system services. prevents CWE-653
  • V-272496 RHEL 9 must elevate the SELinux context when an administrator calls the sudo command. prevents CWE-653
Windows 10 (1 rule)
  • V-220712 Only accounts responsible for the administration of a system must have Administrator rights on the system. prevents CWE-653
Windows 11 (1 rule)
  • V-253269 Only accounts responsible for the administration of a system must have Administrator rights on the system. prevents CWE-653
Windows Server 2016 (1 rule)
  • V-225007 Only administrators responsible for the member server or standalone or nondomain-joined system must have Administrator rights on the system. prevents CWE-653

References