VDB-102928 · CVE-2017-3748 · BID 99295

Lenovo VIBE Mobile Phone nac_server Rooting access control

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 was found in Lenovo VIBE Mobile Phone. Affected by this issue is some unknown functionality of the component nac_server. Executing a manipulation can lead to access control (Rooting). This vulnerability appears as CVE-2017-3748. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability has been found in Lenovo VIBE Mobile Phone (Smartphone Operating System) (version unknown) and classified as critical. This vulnerability affects an unknown function of the component nac_server. The manipulation with an unknown input leads to a access control vulnerability (Rooting). The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

On Lenovo VIBE mobile phones, improper access controls on the nac_server component can be abused in conjunction with CVE-2017-3749 and CVE-2017-3750 to elevate privileges to the root user (commonly known as 'rooting' or "jail breaking" a device).

The bug was discovered 06/22/2017. The weakness was presented 06/29/2017 (Website). The advisory is shared for download at support.lenovo.com. This vulnerability was named CVE-2017-3748 since 12/16/2016. 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. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k.

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 99295†). See VDB-102929 and VDB-102930 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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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: Rooting
Class: Access control / Rooting
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined
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

12/16/2016 🔍
06/22/2017 +188 days 🔍
06/28/2017 +6 days 🔍
06/29/2017 +1 days 🔍
06/29/2017 +0 days 🔍
06/30/2017 +1 days 🔍
12/30/2020 +1279 days 🔍

Sourcesinfo

Vendor: lenovo.com

Advisory: support.lenovo.com
Researcher: Jake Valletta
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-3748 (🔍)
GCVE (CVE): GCVE-0-2017-3748
GCVE (VulDB): GCVE-100-102928
SecurityFocus: 99295 - Lenovo VIBE Mobile CVE-2017-3748 Local Privilege Escalation Vulnerability

See also: 🔍

Entryinfo

Created: 06/30/2017 09:08
Updated: 12/30/2020 09:30
Changes: 06/30/2017 09:08 (60), 10/21/2019 11:19 (4), 12/30/2020 09:30 (2)
Complete: 🔍
Cache ID: 216::103

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

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