Security Resilience

CVE-2023-2002

Access Control in Debian Linux 10.0 … 11.0

Public PoCAccess Control
Published
26 May 2023
Modified
21 November 2024
CVSS Score v3.1 6.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
EPSS Score 0.015 73th percentile
Risk Priority 54 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-2023-2002 is a medium-severity Execution with Unnecessary Privileges (CWE-250) vulnerability in Debian Debian Linux. Its CVSS base score is 6.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 27% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

A vulnerability was found in the HCI sockets implementation due to a missing capability check in net/bluetooth/hci_sock.c in the Linux Kernel. This flaw allows an attacker to unauthorized execution of management commands, compromising the confidentiality, integrity, and availability of Bluetooth…

more

communication.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control
Adversaries may obfuscate command and control traffic to make it more difficult to detect.
T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
T1011 Exfiltration Over Other Network Medium Exfiltration
Adversaries may attempt to exfiltrate data over a different network medium than the command and control channel.
T1027.003 Steganography Stealth
Adversaries may use steganography techniques in order to prevent the detection of hidden information.
T1027.004 Compile After Delivery Stealth
Adversaries may attempt to make payloads difficult to discover and analyze by delivering files to victims as uncompiled code.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-24857Same product: Debian Debian Linux
CVE-2024-26817Same product: Debian Debian Linux
CVE-2023-4207Same product: Debian Debian Linux
CVE-2024-26804Same product: Debian Debian Linux
CVE-2024-26766Same product: Debian Debian Linux
CVE-2024-35823Same product: Debian Debian Linux
CVE-2024-26895Same product: Debian Debian Linux
CVE-2024-26739Same product: Debian Debian Linux
CVE-2023-4921Same product: Debian Debian Linux
CVE-2023-4623Same product: Debian Debian Linux

Affected Assets

linux
linux kernel
≤ 6.4
debian
debian linux
10.0, 11.0

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 4 hardening rules · 4 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V10.2.3
  • V13.2.2

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 CWE-250

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

addresses: CWE-863 CWE-250

Supervision identifies cases where authorization logic incorrectly permits unauthorized actions.

addresses: CWE-250 CWE-863

Reviewing accounts for compliance, disabling/removing unneeded accounts, and aligning with termination processes prevents execution with unnecessary privileges.

addresses: CWE-863 CWE-250

Periodic review and documentation of connection needs reduces incorrect authorization.

addresses: CWE-863 CWE-250

The control requires correct implementation of authorization specifically tied to change operations.

addresses: CWE-863 CWE-250

Authorization reviews within the risk management program detect and prevent incorrect authorization logic or policy enforcement before systems receive approval to operate.

addresses: CWE-250 CWE-863

Insider threat program enforces least-privilege reviews and monitors privileged actions, directly reducing abuse of unnecessary rights.

addresses: CWE-250 CWE-863

Org-wide risk executive function provides accountability and oversight that directly reduces execution with unnecessary privileges through consistent identification and mitigation.

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 mostly match
blocks

PR.AA-05 directly enforces least privilege so largely eliminates CWE-250 at design time, yet the weakness can still arise from runtime escalation paths, third-party code, or misapplied role definitions outside this single control.

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.

removes
blocks

A.5.15's policy, requirements, and rules for determining/minimizing access rights (incl. privileged access restrictions, need-to-know, least-privilege-like mapping, and role-based consistency) directly stop most unnecessary-privilege execution by design; bounded remainder is runtime elevation or misconfigured enforcement that still requires other controls (e.g. 8.2, 8.3) to act.

removes
blocks

Requiring explicit justification and time-limited grants discourages the routine allocation of unnecessary privileges that would otherwise allow execution with more rights than required.

finds

Independent scrutiny can identify processes or services still running with unnecessary privileges and drive their reduction before an attacker can abuse them.

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).

Windows 10 (1 rule)
  • V-220712 Only accounts responsible for the administration of a system must have Administrator rights on the system. blocks CWE-250
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-250
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-250

References