// For flags

CVE-2017-4934

VMware Workstation NAT IP Fragment Reassembly Heap-based Buffer Overflow Privilege Escalation Vulnerability

Severity Score

8.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

VMware Workstation (12.x before 12.5.8) and Fusion (8.x before 8.5.9) contain a heap buffer-overflow vulnerability in VMNAT device. This issue may allow a guest to execute code on the host.

VMware Workstation (en versiones 12.x anteriores a la 12.5.8) y Fusion (en versiones 8.x anteriores a la 8.5.9) contienen una vulnerabilidad de desbordamiento de búfer basado en memoria dinámica (heap) en el dispositivo VMNAT. Este problema puede permitir que un invitado ejecute código en el host.

This vulnerability allows local attackers to execute arbitrary code on vulnerable installations of VMware Workstation. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the handling of the NAT IP Fragment Reassembly. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to elevate privileges and execute arbitrary code under the context of SYSTEM in the host OS.

*Credits: Jun Mao of Tencent PC Manager
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
Attack Vector
Local
Attack Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-12-26 CVE Reserved
  • 2017-11-17 CVE Published
  • 2023-09-27 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Vmware
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Workstation
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12.0.0
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Affected
Vmware
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Workstation
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12.0.1
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Affected
Vmware
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Workstation
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12.1
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-
Affected
Vmware
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Workstation
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12.1.1
Search vendor "Vmware" for product "Workstation" and version "12.1.1"
-
Affected
Vmware
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Workstation
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12.5
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-
Affected
Vmware
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Workstation
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12.5.1
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Affected
Vmware
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Workstation
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12.5.2
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Affected
Vmware
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Workstation
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12.5.3
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Affected
Vmware
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Workstation
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12.5.4
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Affected
Vmware
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Workstation
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12.5.5
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Affected
Vmware
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Workstation
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12.5.6
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Affected
Vmware
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Workstation
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12.5.7
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Affected
Vmware
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Fusion
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8.0.0
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Affected
Vmware
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Fusion
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8.0.1
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Affected
Vmware
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Fusion
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8.0.2
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Affected
Vmware
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Fusion
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8.1.0
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Affected
Vmware
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Fusion
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8.1.1
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Affected
Vmware
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Fusion
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8.5.0
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Affected
Vmware
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Fusion
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8.5.1
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Affected
Vmware
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Fusion
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8.5.2
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Affected
Vmware
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Fusion
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8.5.3
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Affected
Vmware
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Fusion
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8.5.4
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Affected
Vmware
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Fusion
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8.5.5
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Affected
Vmware
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Fusion
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8.5.6
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Affected
Vmware
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Fusion
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8.5.7
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Affected
Vmware
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Fusion
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8.5.8
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Affected