Cyber Resilience

CVE-2023-28063

Dell Optiplex 3000 Micro Firmware

Published
06 February 2024
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 6.7
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0016 5th percentile
Risk Priority 47 floored blend · peak EPSS

Summary

CVE-2023-28063 is a medium-severity Signed to Unsigned Conversion Error (CWE-195) vulnerability in Dell Optiplex 3000 Micro Firmware. Its CVSS base score is 6.7 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-15 (Development Process, Standards, and Tools) — see the control section below for these in your framework.

EU & UK References

Vulnerability Data

Dell BIOS contains a Signed to Unsigned Conversion Error vulnerability. A local authenticated malicious user with admin privileges could potentially exploit this vulnerability, leading to denial of service.

CWE(s)
CWE-195CWE-681

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-28041Same product: Dell Alienware M15 R6
CVE-2023-28029Same product: Dell Alienware M15 R6
CVE-2023-28056Same product: Dell Alienware M15 R6
CVE-2023-28027Same product: Dell Alienware M15 R6
CVE-2023-28052Same product: Dell Alienware M15 R6
CVE-2023-28039Same product: Dell Alienware M15 R6
CVE-2023-25938Same product: Dell Alienware M15 R6
CVE-2023-28028Same product: Dell Alienware M15 R6
CVE-2023-28042Same product: Dell Alienware M15 R6
CVE-2023-28050Same product: Dell Alienware M15 R6

Affected Assets

dell
optiplex 3000 micro firmware
all versions
dell
optiplex 3000 small form factor firmware
all versions
dell
optiplex 3000 tower firmware
all versions
dell
optiplex 5000 micro firmware
all versions
dell
optiplex 5000 small form factor firmware
all versions
dell
optiplex 5000 tower firmware
all versions
dell
optiplex 7000 micro firmware
all versions
dell
optiplex 7000 small form factor firmware
all versions
dell
optiplex 7000 tower firmware
all versions
dell
optiplex 7000 xe micro firmware
all versions
+281 more product configuration(s) — see NVD for full list

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation can discover conversion errors through static analysis, fuzzing, or targeted unit tests.

SA-15 Development Process, Standards, and Tools partial match

Requiring documented development standards and tools can enforce coding rules that prohibit or safely wrap such casts.

SA-8 Security and Privacy Engineering Principles partial match

Engineering principles can mandate safe integer handling and strong typing to avoid unsafe signed-to-unsigned casts.

SI-10 Information Input Validation partial match

Input validation directly stops malformed or out-of-range numeric values from reaching conversion logic.

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.PS-06 mostly match
prevents

Secure SDLC practices (static analysis, code review, safe-integer standards) directly prevent signed-to-unsigned conversion errors.

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect conversion-related defects before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates practices that can catch signed-to-unsigned conversion errors during design and coding.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify safe integer handling and type-conversion rules.

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

Secure system architecture and engineering principles include data-type safety and overflow prevention.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prohibit unsafe signed-to-unsigned casts and require defensive checks.

References