// For flags

CVE-2023-43655

Remote Code Execution via web-accessible composer.phar

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

Composer is a dependency manager for PHP. Users publishing a composer.phar to a public web-accessible server where the composer.phar can be executed as a php file may be subject to a remote code execution vulnerability if PHP also has `register_argc_argv` enabled in php.ini. Versions 2.6.4, 2.2.22 and 1.10.27 patch this vulnerability. Users are advised to upgrade. Users unable to upgrade should make sure `register_argc_argv` is disabled in php.ini, and avoid publishing composer.phar to the web as this is not best practice.

Composer es un administrador de dependencias para PHP. Los usuarios que publican un composer.phar en un servidor público accesible desde la web donde se puede ejecutar el composer.phar como un archivo php pueden estar sujetos a una vulnerabilidad de ejecución remota de código si PHP también tiene `register_argc_argv` habilitado en php.ini. Las versiones 2.6.4, 2.2.22 y 1.10.27 corrigen esta vulnerabilidad. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben asegurarse de que `register_argc_argv` esté deshabilitado en php.ini y evitar publicar composer.phar en la web, ya que esta no es la mejor práctica.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2023-09-20 CVE Reserved
  • 2023-09-29 CVE Published
  • 2024-09-23 CVE Updated
  • 2024-10-31 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Getcomposer
Search vendor "Getcomposer"
 Composer
Search vendor "Getcomposer" for product "Composer"
 < 1.10.27
Search vendor "Getcomposer" for product "Composer" and version " < 1.10.27"
-
Affected
Getcomposer
Search vendor "Getcomposer"
 Composer
Search vendor "Getcomposer" for product "Composer"
 >= 2.0.0 < 2.2.21
Search vendor "Getcomposer" for product "Composer" and version " >= 2.0.0 < 2.2.21"
-
Affected
Getcomposer
Search vendor "Getcomposer"
 Composer
Search vendor "Getcomposer" for product "Composer"
 >= 2.3.0 < 2.6.4
Search vendor "Getcomposer" for product "Composer" and version " >= 2.3.0 < 2.6.4"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 37
Search vendor "Fedoraproject" for product "Fedora" and version "37"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 38
Search vendor "Fedoraproject" for product "Fedora" and version "38"
-
Affected