LXCI for VMware up to 5.4 File Upload Backup File unrestricted upload

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 (≈)
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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.
6.1$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in LXCI for VMware up to 5.4. Impacted is an unknown function of the component File Upload. Such manipulation as part of Backup File leads to unrestricted upload. This vulnerability is uniquely identified as CVE-2018-16093. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in LXCI for VMware up to 5.4. Affected by this issue is an unknown functionality of the component File Upload. The manipulation as part of a Backup File leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In versions prior to 5.5, LXCI for VMware allows an authenticated user to write to any system file due to insufficient sanitization during the upload of a backup file.

The bug was discovered 11/29/2018. The weakness was disclosed 11/30/2018 (Website). The advisory is shared for download at support.lenovo.com. This vulnerability is handled as CVE-2018-16093 since 08/29/2018. The attack may be launched remotely. The successful exploitation needs a simple authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1608.002.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 5.5 eliminates this vulnerability.

The entries VDB-127353 and VDB-127376 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: LXCI for VMware 5.5

Timelineinfo

08/29/2018 🔍
11/29/2018 +92 days 🔍
11/30/2018 +1 days 🔍
11/30/2018 +0 days 🔍
12/01/2018 +1 days 🔍
04/16/2020 +502 days 🔍

Sourcesinfo

Advisory: support.lenovo.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-16093 (🔍)
GCVE (CVE): GCVE-0-2018-16093
GCVE (VulDB): GCVE-100-127352
See also: 🔍

Entryinfo

Created: 12/01/2018 20:11
Updated: 04/16/2020 15:17
Changes: 12/01/2018 20:11 (59), 04/16/2020 15:17 (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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