// For flags

CVE-2018-7166

nodejs: Unintentional exposure of uninitialized memory

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In all versions of Node.js 10 prior to 10.9.0, an argument processing flaw can cause `Buffer.alloc()` to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying `encoding` can be passed as a number, this is misinterpreted by `Buffer's` internal "fill" method as the `start` to a fill operation. This flaw may be abused where `Buffer.alloc()` arguments are derived from user input to return uncleared memory blocks that may contain sensitive information.

En todas las versiones de Node.js 10 anteriores a la 10.9.0, un fallo en el procesamiento de argumentos puede provocar que "Buffer.alloc()" devuelva memoria no inicializada. Este método está diseñado para ser seguro y solo devuelve la memoria inicializada o borrada. El tercer argumento que especifica "encoding" puede ser pasado como un número. Esto es malinterpretado por el método interno "fill" del búfer como el "comienzo" de una operación de llenado (fill). Este defecto puede ser explotado cuando los argumentos "Buffer.alloc()" se derivan de la entrada del usuario para devolver bloques de memoria no borrados que pueden contener información sensible.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-02-15 CVE Reserved
  • 2018-08-21 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-226: Sensitive Information in Resource Not Removed Before Reuse
  • CWE-908: Use of Uninitialized Resource
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nodejs
Search vendor "Nodejs"
 Node.js
Search vendor "Nodejs" for product "Node.js"
 >= 10.0.0 < 10.9.0
Search vendor "Nodejs" for product "Node.js" and version " >= 10.0.0 < 10.9.0"
-
Affected