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Thinkcentre M720Q Firmware CVE-2023-45077

MEDIUM
Out-of-bounds Read (CWE-125)
2023-11-08 psirt@lenovo.com
Buffer Overflow Information Disclosure Lenovo Thinkcentre M720Q Firmware Thinkcentre M720T Firmware Thinkcentre M720S Firmware Thinkcentre M920Q Firmware Thinkcentre M920X Firmware Thinkcentre M920T Firmware Thinkcentre M920S Firmware Thinkcentre M625Q Firmware Thinkcentre M80T Firmware Thinkcentre M80S Firmware Thinkcentre M90T Firmware Thinkcentre M90S Firmware Ideacentre 3 07Imb05 Firmware Ideacentre 5 14Iob6 Firmware Ideacentre Creator 5 14Iob6 Firmware Ideacentre G5 14Imb05 Firmware Ideacentre Gaming 5 14Iob6 Firmware Thinkcentre M630E Firmware Thinkcentre M70A Firmware Thinkcentre M70S Firmware Thinkcentre M70T Firmware Thinkcentre M75N Firmware Thinkcentre M75S Gen 2 Firmware Thinkcentre M70C Firmware Thinkcentre M70Q Firmware Thinkcentre M75T Gen 2 Firmware Thinkcentre M80Q Firmware Thinkcentre M90A Firmware Thinkcentre M90Q Tiny Firmware V30A 22Iml Firmware V50A 24Imb Firmware V50S 07Imb Firmware V50A 22Imb Firmware V50T 13Imb Firmware Thinkedge Se30 Firmware Ideacentre C5 14Imb05 Firmware V30A 24Iml Firmware V50T 13Iob G2 Firmware Legion T7 34Imz5 Firmware Thinkcentre M75Q Gen 2 Firmware Thinkcentre M820Z All In One Firmware Ideacentre 3 07Ada05 Firmware Ideacentre G5 14Amr05 Firmware V55T Gen 2 13Acn Firmware Ideacentre Mini 5 01Imh05 Firmware Thinkstation P320 Workstation Firmware Thinkstation P330 Tiny Workstation Firmware Thinkstation P330 Workstation Firmware Thinkstation P330 Workstation 2Nd Gen Firmware Thinkstation P340 Tiny Workstation Firmware Thinkstation P340 Workstation Firmware Thinkstation P348 Workstation Firmware Thinkstation P350 Workstation Firmware Thinkstation P520 Workstation Firmware Thinkstation P520C Workstation Firmware Thinkstation P720 Workstation Firmware Thinkstation P920 Workstation Firmware Ideacentre Mini 5 01Iaq7 Firmware Thinkcentre M920Z All In One Firmware V50T 13Imh Firmware Thinkstation P360 Workstation Firmware
6.7
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, read limits
MITRE ATT&CK

1 technique across 1 tactic: Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 6.7 (MEDIUM). Attack characteristics: local attack vector, low complexity, high privileges required, no user interaction not required.

Exploit ScenarioDerived

A local attacker with access to the system could read data from memory outside the intended buffer boundaries.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAI

A memory leakage vulnerability was reported in the 534D0740 DXE driver that may allow a local attacker with elevated privileges to write to NVRAM variables. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. A memory leakage vulnerability was reported in the 534D0740 DXE driver that may allow a local attacker with elevated privileges to write to NVRAM variables. Affected products include: Lenovo Ideacentre C5-14Imb05 Firmware, Lenovo Ideacentre 3-07Ada05 Firmware, Lenovo Ideacentre 3-07Imb05 Firmware, Lenovo Ideacentre G5-14Imb05 Firmware, Lenovo Ideacentre 5-14Iob6 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.7 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionNVD

A memory leakage vulnerability was reported in the 534D0740 DXE driver that may allow a local attacker with elevated privileges to write to NVRAM variables.

Threat Intelligence Overview

EPSS Score
0.2%
Top 88% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

34
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:o:lenovo:ideacentre_c5-14imb05_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_3-07ada05_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_3-07imb05_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_g5-14imb05_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_5-14iob6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_creator_5-14iob6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_g5-14amr05_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_g5-14imb05_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_gaming_5-14iob6_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_mini_5_01iaq7_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:ideacentre_mini_5-01imh05_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:legion_t7-34imz5_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m625q_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m630e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m70a_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m920z_all-in-one_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m920x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m920t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m920s_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:lenovo:thinkcentre_m920q_firmware:*:*:*:*:*:*:*:*
+ 44 more

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