Common Weakness Enumeration

CWE-502

Allowed

Deserialization of Untrusted Data

Abstraction: Base · Status: Draft

API response cwe.mitre.org

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

4798 vulnerabilities reference this CWE, most recent first.

CVE-2021-24217 (GCVE-0-2021-24217)

Vulnerability from cvelistv5 – Published: 2021-04-12 14:01 – Updated: 2024-08-03 19:21
VLAI
Title
Facebook for WordPress < 3.0.0 - PHP Object Injection with POP Chain
Summary
The run_action function of the Facebook for WordPress plugin before 3.0.0 deserializes user supplied data making it possible for PHP objects to be supplied creating an Object Injection vulnerability. There was also a useable magic method in the plugin that could be used to achieve remote code execution.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Unknown Facebook for WordPress Affected: 3.0.0 , < 3.0.0 (custom)
Create a notification for this product.
Credits
Chloe Chamberland
Show details on NVD website
To clipboard 

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CVE-2021-24040 (GCVE-0-2021-24040)

Vulnerability from cvelistv5 – Published: 2021-09-10 22:10 – Updated: 2024-08-03 19:21
VLAI
Summary
Due to use of unsafe YAML deserialization logic, an attacker with the ability to modify local YAML configuration files could provide malicious input, resulting in remote code execution or similar risks. This issue affects ParlAI prior to v1.1.0.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data (CWE-502)
Assigner
References
Impacted products
Vendor Product Version
Facebook ParlAI Unaffected: 1.1.0 , < unspecified (custom)
Affected: unspecified , < 1.1.0 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-23895 (GCVE-0-2021-23895)

Vulnerability from cvelistv5 – Published: 2021-06-02 13:05 – Updated: 2024-08-03 19:14
VLAI
Title
Authorized deserialization of untrusted data in McAfee DBSec
Summary
Deserialization of untrusted data vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows a remote authenticated attacker to create a reverse shell with administrator privileges on the DBSec server via carefully constructed Java serialized object sent to the DBSec server.
Severity
9 (Critical)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
McAfee,LLC McAfee Database Security (DBSec) Affected: unspecified , < 4.8.2 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-23894 (GCVE-0-2021-23894)

Vulnerability from cvelistv5 – Published: 2021-06-02 13:05 – Updated: 2024-08-03 19:14
VLAI
Title
Unauthorized deserialization of untrusted data in McAfee DBSec
Summary
Deserialization of untrusted data vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows a remote unauthenticated attacker to create a reverse shell with administrator privileges on the DBSec server via carefully constructed Java serialized object sent to the DBSec server.
Severity
9.6 (Critical)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
McAfee,LLC McAfee Database Security (DBSec) Affected: unspecified , < 4.8.2 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-22855 (GCVE-0-2021-22855)

Vulnerability from cvelistv5 – Published: 2021-02-17 13:30 – Updated: 2024-09-16 20:52
VLAI
Title
Soar Cloud System Co., Ltd. HR Portal - Arbitrary Code Execution
Summary
The specific function of HR Portal of Soar Cloud System accepts any type of object to be deserialized. Attackers can send malicious serialized objects to execute arbitrary commands.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Date Public
2021-02-17 00:00
Show details on NVD website
To clipboard 

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CVE-2021-22777 (GCVE-0-2021-22777)

Vulnerability from cvelistv5 – Published: 2021-07-21 10:40 – Updated: 2024-08-03 18:51
VLAI
Summary
A CWE-502: Deserialization of Untrusted Data vulnerability exists that could cause code execution by opening a malicious project file.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
n/a SoSafe Configurable prior to V1.8.1 Affected: SoSafe Configurable prior to V1.8.1
Show details on NVD website
To clipboard 

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CVE-2021-22097 (GCVE-0-2021-22097)

Vulnerability from cvelistv5 – Published: 2021-10-28 15:24 – Updated: 2024-08-03 18:30
VLAI
Summary
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
n/a Spring AMQP Affected: Spring AMQP versions 2.2.X prior to 2.2.19 and 2.3.x prior to 2.3.11 .
Show details on NVD website
To clipboard 

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CVE-2021-22095 (GCVE-0-2021-22095)

Vulnerability from cvelistv5 – Published: 2021-11-30 18:41 – Updated: 2024-08-03 18:30
VLAI
Summary
In Spring AMQP versions 2.2.0 - 2.2.19 and 2.3.0 - 2.3.11, the Spring AMQP Message object, in its toString() method, will create a new String object from the message body, regardless of its size. This can cause an OOM Error with a large message
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
n/a Spring AMQP Affected: Spring AMQP versions 2.2.X prior to 2.2.20 and 2.3.x prior to 2.3.12 .
Show details on NVD website
To clipboard 

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CVE-2021-21956 (GCVE-0-2021-21956)

Vulnerability from cvelistv5 – Published: 2022-04-14 19:56 – Updated: 2025-04-15 19:08
VLAI
Summary
A php unserialize vulnerability exists in the Ai-Bolit functionality of CloudLinux Inc Imunify360 5.10.2. A specially-crafted malformed file can lead to potential arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.2 (High)
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
CloudLinux Inc Imunify360 Affected: 5.8
Affected: 5.9
Create a notification for this product.
Date Public
2021-11-22 00:00
Show details on NVD website
To clipboard 

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CVE-2021-21869 (GCVE-0-2021-21869)

Vulnerability from cvelistv5 – Published: 2021-08-25 18:16 – Updated: 2024-08-03 18:23
VLAI
Summary
An unsafe deserialization vulnerability exists in the Engine.plugin ProfileInformation ProfileData functionality of CODESYS GmbH CODESYS Development System 3.5.16 and 3.5.17. A specially crafted file can lead to arbitrary command execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
n/a CODESYS Affected: CODESYS GmbH CODESYS Development System 3.5.16, CODESYS GmbH CODESYS Development System 3.5.17
Show details on NVD website
To clipboard 

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Mitigation
Architecture and Design Implementation

If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.

Mitigation
Implementation

When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.

Mitigation
Implementation

Explicitly define a final object() to prevent deserialization.

Mitigation
Architecture and Design Implementation
  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
Mitigation
Implementation

Avoid having unnecessary types or gadgets (a sequence of instances and method invocations that can self-execute during the deserialization process, often found in libraries) available that can be leveraged for malicious ends. This limits the potential for unintended or unauthorized types and gadgets to be leveraged by the attacker. Add only acceptable classes to an allowlist. Note: new gadgets are constantly being discovered, so this alone is not a sufficient mitigation.

Mitigation
Architecture and Design Implementation

Employ cryptography of the data or code for protection. However, it's important to note that it would still be client-side security. This is risky because if the client is compromised then the security implemented on the client (the cryptography) can be bypassed.

Mitigation MIT-29
Operation

Strategy: Firewall

Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].

CAPEC-586: Object Injection

An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.

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