// For flags

CVE-2020-1953

apache-commons-configuration: uncontrolled class instantiation when loading YAML files

Severity Score

10.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Apache Commons Configuration uses a third-party library to parse YAML files which by default allows the instantiation of classes if the YAML includes special statements. Apache Commons Configuration versions 2.2, 2.3, 2.4, 2.5, 2.6 did not change the default settings of this library. So if a YAML file was loaded from an untrusted source, it could therefore load and execute code out of the control of the host application.

Apache Commons Configuration usa una biblioteca de terceros para analizar archivos YAML, la cual por defecto permite la instanciación de clases si el YAML incluye sentencias especiales. Apache Commons Configuration versiones 2.2, 2.3, 2.4, 2.5, 2.6 no cambió la configuración predeterminada de esta biblioteca. Por lo tanto, si un archivo YAML se cargaba desde una fuente no confiable, podía por lo tanto cargar y ejecutar código fuera del control de la aplicación host.

A flaw was found in the Apache Commons Configuration, where it uses a third-party library to process YAML files, which by default, allows the instantiation of classes if the YAML includes special statements. Apache Commons Configuration versions 2.2, 2.3, 2.4, 2.5, 2.6 did not change the default settings of this library. If a YAML file was loaded from an untrusted source, it could load and execute code out of the control of the host application.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
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
  • 2019-12-02 CVE Reserved
  • 2020-03-13 CVE Published
  • 2024-01-16 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache
Search vendor "Apache"
Commons Configuration
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2.2
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-
Affected
Apache
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Commons Configuration
Search vendor "Apache" for product "Commons Configuration"
2.3
Search vendor "Apache" for product "Commons Configuration" and version "2.3"
-
Affected
Apache
Search vendor "Apache"
Commons Configuration
Search vendor "Apache" for product "Commons Configuration"
2.4
Search vendor "Apache" for product "Commons Configuration" and version "2.4"
-
Affected
Apache
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Commons Configuration
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2.5
Search vendor "Apache" for product "Commons Configuration" and version "2.5"
-
Affected
Apache
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Commons Configuration
Search vendor "Apache" for product "Commons Configuration"
2.6
Search vendor "Apache" for product "Commons Configuration" and version "2.6"
-
Affected
Oracle
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Database Server
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11.2.0.4
Search vendor "Oracle" for product "Database Server" and version "11.2.0.4"
-
Affected
Oracle
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Database Server
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12.1.0.2
Search vendor "Oracle" for product "Database Server" and version "12.1.0.2"
-
Affected
Oracle
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Database Server
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12.2.0.1
Search vendor "Oracle" for product "Database Server" and version "12.2.0.1"
-
Affected
Oracle
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Database Server
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18c
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-
Affected
Oracle
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Database Server
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19c
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-
Affected
Oracle
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Healthcare Foundation
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7.1.1
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Affected
Oracle
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Healthcare Foundation
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7.2.0
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Affected
Oracle
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Healthcare Foundation
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7.2.1
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Affected
Oracle
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Healthcare Foundation
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7.3.0
Search vendor "Oracle" for product "Healthcare Foundation" and version "7.3.0"
-
Affected