// For flags

CVE-2018-1000544

rubyzip: arbitrary file write vulnerability / arbitrary code execution using a specially crafted zip file

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem..

rubyzip gem rubyzip en versiones 1.2.1 y anteriores contiene una vulnerabilidad de salto de directorio en el componente Zip::File que puede resultar en la escritura de archivos arbitrarios en el sistema de archivos. Si un sitio permite la subida de archivos .zip, un atacante puede subir un archivo malicioso que contiene vínculos simbólicos o archivos con nombre de ruta absolutos "../" para escribir archivos arbitrarios en el sistema de archivos.

A directory and symbolic link traversal flaw was found in the way rubyzip gem extracts zip files. An attacker, with access to a privileged application capable of extracting zip files, could use this flaw to write new files to arbitrary paths, accessible by the aforementioned privileged application.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2018-06-15 CVE Reserved
  • 2018-06-26 CVE Published
  • 2023-12-27 EPSS Updated
  • 2024-08-05 CVE Updated
  • 2024-08-05 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-59: Improper Link Resolution Before File Access ('Link Following')
  • CWE-434: Unrestricted Upload of File with Dangerous Type
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Rubyzip Project
Search vendor "Rubyzip Project"
 Rubyzip
Search vendor "Rubyzip Project" for product "Rubyzip"
 <= 1.2.1
Search vendor "Rubyzip Project" for product "Rubyzip" and version " <= 1.2.1"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected
Debian
Search vendor "Debian"
 Debian Linux
Search vendor "Debian" for product "Debian Linux"
 9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected
Redhat
Search vendor "Redhat"
 Cloudforms
Search vendor "Redhat" for product "Cloudforms"
 4.6
Search vendor "Redhat" for product "Cloudforms" and version "4.6"
-
Affected