VDB-91867 · CVE-2016-5247 · BID 92661

Lenovo ThinkCentre/ThinkServer/ThinkStation BIOS Secure Boot 7pk security

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Lenovo ThinkCentre, ThinkServer and ThinkStation. The affected element is an unknown function of the component BIOS. This manipulation causes 7pk security (Secure Boot). This vulnerability is tracked as CVE-2016-5247. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability has been found in Lenovo ThinkCentre, ThinkServer and ThinkStation (version now known) and classified as critical. Affected by this vulnerability is some unknown processing of the component BIOS. The manipulation with an unknown input leads to a 7pk security vulnerability (Secure Boot). The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The BIOS for Lenovo ThinkCentre E93, M6500t/s, M6600, M6600q, M6600t/s, M73p, M800, M83, M8500t/s, M8600t/s, M900, M93, and M93P devices; ThinkServer RQ940, RS140, TS140, TS240, TS440, and TS540 devices; and ThinkStation E32, P300, and P310 devices might allow local users or physically proximate attackers to bypass the Secure Boot protection mechanism by leveraging an AMI test key.

The weakness was disclosed 09/22/2016 (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2016-5247. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1211 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 92661†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Secure Boot
Class: 7pk security / Secure Boot
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/03/2016 🔍
08/25/2016 +83 days 🔍
09/22/2016 +28 days 🔍
09/22/2016 +0 days 🔍
09/23/2016 +1 days 🔍
09/19/2022 +2187 days 🔍

Sourcesinfo

Vendor: lenovo.com

Advisory: securityfocus.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5247 (🔍)
GCVE (CVE): GCVE-0-2016-5247
GCVE (VulDB): GCVE-100-91867
SecurityFocus: 92661 - Lenovo Secure Boot CVE-2016-5247 Local Security Bypass Vulnerability

Entryinfo

Created: 09/23/2016 09:23
Updated: 09/19/2022 19:20
Changes: 09/23/2016 09:23 (49), 04/23/2019 23:14 (11), 09/19/2022 19:20 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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