Cyber Resilience

CVE-2023-43572

Memory Safety in Lenovo Thinkcentre Neo 30A 27 Gen 4 Firmware ≤ o5nkt33a

Published
08 November 2023
Modified
21 November 2024
Patch / advisory
CVSS Score v3.1 4.4
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:N/A:N
EPSS Score 0.0021 12th percentile
Risk Priority 34 floored blend · peak EPSS

Summary

CVE-2023-43572 is a medium-severity Buffer Over-read (CWE-126) vulnerability in Lenovo Thinkcentre Neo 30A 27 Gen 4 Firmware. Its CVSS base score is 4.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique OS Credential Dumping (T1003); ranked at the 12th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

A buffer over-read was reported in the BiosExtensionLoader module in some Lenovo Desktop products that may allow a local attacker with elevated privileges to disclose sensitive information.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
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.
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-43574Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43568Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43569Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43578Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43577Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43571Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43580Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43573Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43567Same product: Lenovo Ideacentre 3-07Ada05
CVE-2023-43581Same product: Lenovo Ideacentre 3-07Ada05

Affected Assets

lenovo
ideacentre c5-14imb05 firmware
≤ o4hkt3ca
lenovo
ideacentre 3-07ada05 firmware
≤ o4fkt39a
lenovo
ideacentre 3-07imb05 firmware
≤ m2vkt21a
lenovo
ideacentre 5 14iab7 firmware
≤ m42kt46a
lenovo
ideacentre 5 14irb8 firmware
≤ m4ukt36a
lenovo
ideacentre 5-14acn6 firmware
all versions
lenovo
ideacentre t540-15ama g firmware
all versions
lenovo
thinkcentre neo 70t gen 3 firmware
≤ m40kt45a
lenovo
thinkcentre neo 50t gen 3 firmware
≤ m42kt46a
lenovo
thinkcentre neo 50a 24 gen 4 firmware
≤ o5xkt18a
+101 more product configuration(s) — see NVD for full list

Mitigating Controls

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 development practices directly prevent introduction of buffer over-read weaknesses.

ID.RA-01 partial match
prevents

Vulnerability identification processes can discover buffer over-read flaws via scanning or review.

PR.PS-02 partial match
prevents

Patching or replacing vulnerable software removes known instances of buffer over-read bugs.

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.

finds

Security testing in development can detect buffer over-reads before release.

A.8.15 Logging partial match
finds

Logging can record evidence of an out-of-bounds read but does not prevent the weakness itself.

prevents

Secure SDLC mandates input validation and bounds checking that can prevent buffer over-reads.

prevents

Application security requirements can specify buffer-size and bounds-checking rules.

prevents

Secure architecture principles include memory-safety and bounds-checking design choices.

prevents

Secure coding standards directly require bounds-checked buffer access, mitigating over-reads.

References