Security Resilience

CVE-2023-0971

Access Control in Silabs Z\/Ip Gateway Sdk ≤ 7.18.01

Published
21 June 2023
Modified
21 November 2024
CVSS Score v3.1 9.6
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0025 15th percentile
Risk Priority 66 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-0971 is a critical-severity Privilege Chaining (CWE-268) vulnerability in Silabs Z\/Ip Gateway Sdk. Its CVSS base score is 9.6 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked at the 15th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

A logic error in SiLabs Z/IP Gateway SDK 7.18.02 and earlier allows authentication to be bypassed, remote administration of Z-Wave controllers, and S0/S2 encryption keys to be recovered.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
T1001.002 Steganography Command And Control
Adversaries may use steganographic techniques to hide command and control traffic to make detection efforts more difficult.
T1003.002 Security Account Manager Credential Access
Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through in-memory techniques or through the Windows Registry where the SAM database is stored.
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-4489Same product: Silabs Z\/Ip Gateway Sdk
CVE-2023-0970Same product: Silabs Z\/Ip Gateway Sdk
CVE-2023-0969Same product: Silabs Z\/Ip Gateway Sdk
CVE-2023-0972Same product: Silabs Z\/Ip Gateway Sdk
CVE-2024-4877Shared CWE-268
CVE-2024-23938Same vendor: Silabs
CVE-2024-24731Same vendor: Silabs
CVE-2023-1262Same vendor: Silabs
CVE-2023-32099Same vendor: Silabs
CVE-2023-1132Same vendor: Silabs

Affected Assets

silabs
z\/ip gateway sdk
≤ 7.18.01

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)
  • 5 hardening rules · 5 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.

addresses: CWE-863

Periodic review and update of procedures reduces incorrect authorization implementations over time.

addresses: CWE-863

Supervision identifies cases where authorization logic incorrectly permits unauthorized actions.

addresses: CWE-863

Defining permitted attribute values and auditing modifications reduces the chance of incorrect authorization outcomes due to tampered or missing labels.

addresses: CWE-863

The authorization process and usage restrictions help prevent incorrect authorization for remote access types.

addresses: CWE-863

Establishing configuration and connection requirements helps ensure correct rather than incorrect authorization for wireless access.

addresses: CWE-863

Establishing connection authorization processes for mobile devices helps ensure authorization decisions are correctly implemented rather than incorrect.

addresses: CWE-863

Monitoring account use, notifying on changes, and reviewing accounts for compliance corrects incorrect authorization assignments.

addresses: CWE-863

Ensures authorization decisions for external system use are correctly implemented and enforced.

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 partial match
blocks

Least-privilege policy definition and enforcement directly limits unsafe privilege combinations while the control also addresses broader policy lifecycle activities.

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.

blocks

Access control policies can limit the combination of privileges that enable unsafe actions.

blocks

A.5.18's provisioning, review, SoD, and revocation steps (esp. c, f, i) directly block unsafe privilege/role combinations at assignment and change time, but leave a bounded remainder (e.g. runtime dynamic chaining, combinations arising from un-reviewed legacy rights, or non-identity-based privilege escalation) unaddressed by this clause alone.

blocks

A.5.3 directly requires determining and enforcing segregation of the very duties/roles whose unsafe combination is CWE-268, so well-implemented segregation stops the chained privilege from being exercisable; the bounded remainder is small organizations or sanctioned exceptions where segregation cannot be achieved and the clause itself falls back to monitoring/supervision instead.

removes

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` (higher-evidence rows only; rows rated `none` are excluded).

Ubuntu 22.04 (1 rule)
  • V-260559 Ubuntu 22.04 LTS must ensure only users who need access to security functions are part of sudo group. blocks CWE-268
Ubuntu 24.04 (1 rule)
  • V-270748 Ubuntu 24.04 LTS must ensure only users who need access to security functions are part of sudo group. blocks CWE-268
Windows 10 (1 rule)
  • V-220712 Only accounts responsible for the administration of a system must have Administrator rights on the system. blocks CWE-268
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. blocks CWE-268
Windows Server 2019 (1 rule)
  • V-205746 Windows Server 2019 must only allow Administrators responsible for the member server or standalone or nondomain-joined system to have Administrator rights on the system. blocks CWE-268

References