VDB-277480 · CVE-2024-7756 · GCVE-0-2024-7756

Lenovo 10w Laptop BIOS UEFI Shell debug code

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in Lenovo 10w Laptop BIOS, L390 Laptops BIOS and L390 Yoga Laptops BIOS. Impacted is an unknown function of the component UEFI Shell. Executing a manipulation can lead to debug code. This vulnerability is registered as CVE-2024-7756. The physical device can be targeted for the attack. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in Lenovo 10w Laptop BIOS, L390 Laptops BIOS and L390 Yoga Laptops BIOS (version unknown). This vulnerability affects an unknown function of the component UEFI Shell. The manipulation with an unknown input leads to a debug code vulnerability. The CWE definition for the vulnerability is CWE-489. The product is deployed to unauthorized actors with debugging code still enabled or active, which can create unintended entry points or expose sensitive information. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A potential vulnerability was reported in the ThinkPad L390 Yoga and 10w Notebook that could allow a local attacker to escalate privileges by accessing an embedded UEFI shell.

The weakness was published by Warren Togami. The advisory is shared for download at support.lenovo.com. This vulnerability was named CVE-2024-7756 since 08/13/2024. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Lenovo

Name

License

commercial

Website

Vendor: https://www.lenovo.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.8
CNA Vector (lenovo): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Debug code
CWE: CWE-489
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/13/2024 🔍
09/13/2024 +31 days 🔍
09/13/2024 +0 days 🔍
09/13/2024 +0 days 🔍

Sourcesinfo

Vendor: lenovo.com

Advisory: support.lenovo.com
Researcher: Warren Togami
Status: Confirmed

CVE: CVE-2024-7756 (🔍)
GCVE (CVE): GCVE-0-2024-7756
GCVE (VulDB): GCVE-100-277480

Entryinfo

Created: 09/13/2024 20:53
Changes: 09/13/2024 20:53 (62)
Complete: 🔍
Cache ID: 216::103