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.

4850 vulnerabilities reference this CWE, most recent first.

CVE-2021-24579 (GCVE-0-2021-24579)

Vulnerability from cvelistv5 – Published: 2021-08-30 14:11 – Updated: 2024-08-03 19:35
VLAI
Title
Bold Page Builder < 3.1.6 - PHP Object Injection
Summary
The bt_bb_get_grid AJAX action of the Bold Page Builder WordPress plugin before 3.1.6 passes user input into the unserialize() function without any validation or sanitisation, which could lead to a PHP Object Injection. Even though the plugin did not contain a suitable gadget to fully exploit the issue, other installed plugins on the blog could allow such issue to be exploited and lead to RCE in some cases.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Unknown Bold Page Builder Affected: 3.1.6 , < 3.1.6 (custom)
Create a notification for this product.
Credits
dc11
Show details on NVD website
To clipboard 

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CVE-2021-24384 (GCVE-0-2021-24384)

Vulnerability from cvelistv5 – Published: 2021-07-06 11:03 – Updated: 2024-08-03 19:28
VLAI
Title
JoomSport < 5.1.8 - Unauthenticated PHP Object Injection
Summary
The joomsport_md_load AJAX action of the JoomSport WordPress plugin before 5.1.8, registered for both unauthenticated and unauthenticated users, unserialised user input from the shattr POST parameter, leading to a PHP Object Injection issue. Even though the plugin does not have a suitable gadget chain to exploit this, other installed plugins could, which might lead to more severe issues such as RCE
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Credits
Bugbang
Show details on NVD website
To clipboard 

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CVE-2021-24307 (GCVE-0-2021-24307)

Vulnerability from cvelistv5 – Published: 2021-05-24 10:58 – Updated: 2024-08-03 19:28
VLAI
Title
All in One SEO Pack < 4.1.0.2 - Admin RCE via unserialize
Summary
The All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with "aioseo_tools_settings" privilege (most of the time admin) to execute arbitrary code on the underlying host. Users can restore plugin's configuration by uploading a backup .ini file in the section "Tool > Import/Export". However, the plugin attempts to unserialize values of the .ini file. Moreover, the plugin embeds Monolog library which can be used to craft a gadget chain and thus trigger system command execution.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Credits
Vincent MICHEL
Show details on NVD website
To clipboard 

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CVE-2021-24280 (GCVE-0-2021-24280)

Vulnerability from cvelistv5 – Published: 2021-05-14 11:38 – Updated: 2024-08-03 19:28
VLAI
Title
Redirection for Contact Form 7 < 2.3.4 - Authenticated PHP Object Injection
Summary
In the Redirection for Contact Form 7 WordPress plugin before 2.3.4, any authenticated user, such as a subscriber, could use the import_from_debug AJAX action to inject PHP objects.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Query Solutions Redirection for Contact Form 7 Affected: 2.3.4 , < 2.3.4 (custom)
Create a notification for this product.
Credits
Chloe Chamberland
Show details on NVD website
To clipboard 

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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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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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