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.

4852 vulnerabilities reference this CWE, most recent first.

CVE-2020-10914 (GCVE-0-2020-10914)

Vulnerability from cvelistv5 – Published: 2020-04-22 20:51 – Updated: 2024-08-04 11:14
VLAI
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of VEEAM One Agent 9.5.4.4587. Authentication is not required to exploit this vulnerability. The specific flaw exists within the PerformHandshake method. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-10400.
Severity
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
zdi
References
Impacted products
Vendor Product Version
VEEAM One Agent Affected: 9.5.4.4587
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Credits
Michael Zanetta & Edgar Boda-Majer from Bugscale
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CVE-2020-10740 (GCVE-0-2020-10740)

Vulnerability from cvelistv5 – Published: 2020-06-22 17:39 – Updated: 2024-08-04 11:14
VLAI
Summary
A vulnerability was found in Wildfly in versions before 20.0.0.Final, where a remote deserialization attack is possible in the Enterprise Application Beans(EJB) due to lack of validation/filtering capabilities in wildfly.
Severity
6.6 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
[UNKNOWN] wildfly Affected: Versions before 20.0.0.Final
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-10721 (GCVE-0-2020-10721)

Vulnerability from cvelistv5 – Published: 2020-10-22 20:00 – Updated: 2024-08-04 11:14
VLAI
Summary
A flaw was found in the fabric8-maven-plugin 4.0.0 and later. When using a wildfly-swarm or thorntail custom configuration, a malicious YAML configuration file on the local machine executing the maven plug-in could allow for deserialization of untrusted data resulting in arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a fabric8-maven-plugin Affected: jkube-1.0.0
Show details on NVD website
To clipboard 

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CVE-2020-10644 (GCVE-0-2020-10644)

Vulnerability from cvelistv5 – Published: 2020-06-09 17:50 – Updated: 2024-08-04 11:06
VLAI
Summary
The affected product lacks proper validation of user-supplied data, which can result in deserialization of untrusted data on the Ignition 8 Gateway (versions prior to 8.0.10) and Ignition 7 Gateway (versions prior to 7.9.14), allowing an attacker to obtain sensitive information.
Severity
No CVSS data available.
CWE
  • CWE-502 - DESERIALIZATION OF UNTRUSTED DATA CWE-502
Assigner
References
Impacted products
Vendor Product Version
n/a Ignition 8 Gateway Affected: versions prior to 7.9.14 and 8.0.10
Show details on NVD website
To clipboard 

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CVE-2020-9493 (GCVE-0-2020-9493)

Vulnerability from cvelistv5 – Published: 2021-06-16 07:30 – Updated: 2024-08-04 10:34
VLAI
Title
Java deserialization in Chainsaw
Summary
A deserialization flaw was found in Apache Chainsaw versions prior to 2.1.0 which could lead to malicious code execution.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Chainsaw Affected: Apache Chainsaw , < 2.1.0 (custom)
Create a notification for this product.
Credits
This issue was reported by @kingkk
Show details on NVD website
To clipboard 

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CVE-2020-8165 (GCVE-0-2020-8165)

Vulnerability from cvelistv5 – Published: 2020-06-19 17:05 – Updated: 2025-05-09 20:03
VLAI
Summary
A deserialization of untrusted data vulnernerability exists in rails < 5.2.4.3, rails < 6.0.3.1 that can allow an attacker to unmarshal user-provided objects in MemCacheStore and RedisCacheStore potentially resulting in an RCE.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data (CWE-502)
Assigner
References
Impacted products
Vendor Product Version
n/a https://github.com/rails/rails Affected: Fixed in 5.2.4.3, 6.0.3.1
Show details on NVD website
To clipboard 

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CVE-2020-8164 (GCVE-0-2020-8164)

Vulnerability from cvelistv5 – Published: 2020-06-19 17:04 – Updated: 2024-08-04 09:48
VLAI
Summary
A deserialization of untrusted data vulnerability exists in rails < 5.2.4.3, rails < 6.0.3.1 which can allow an attacker to supply information can be inadvertently leaked fromStrong Parameters.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data (CWE-502)
Assigner
References
Impacted products
Vendor Product Version
n/a https://github.com/rails/rails Affected: 5.2.4.3, 6.0.3.1
Show details on NVD website
To clipboard 

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CVE-2020-7811 (GCVE-0-2020-7811)

Vulnerability from cvelistv5 – Published: 2020-10-12 13:16 – Updated: 2024-08-04 09:41
VLAI
Title
Samsung Update Local Privilege Escalation Vulnerability
Summary
Samsung Update 3.0.2.0 ~ 3.0.32.0 has a vulnerability that allows privilege escalation as commands crafted by attacker are executed while the engine deserializes the data received during inter-process communication
Severity
6.2 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Samsung Electronics Samsung Update Affected: 3.0.2.0 , ≤ 3.0.32.0 (custom)
Create a notification for this product.
Credits
Thanks to Yong Hwi Jin for reporting this vulnerability
Show details on NVD website
To clipboard 

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CVE-2020-7532 (GCVE-0-2020-7532)

Vulnerability from cvelistv5 – Published: 2020-09-16 15:40 – Updated: 2024-08-04 09:33
VLAI
Summary
A CWE-502 Deserialization of Untrusted Data vulnerability exists in SCADAPack x70 Security Administrator (V1.2.0 and prior) which could allow arbitrary code execution when an attacker builds a custom .SDB file containing a malicious serialized buffer.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
n/a SCADAPack x70 Security Administrator V1.2.0 and prior. Affected: SCADAPack x70 Security Administrator V1.2.0 and prior.
Show details on NVD website
To clipboard 

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CVE-2020-7528 (GCVE-0-2020-7528)

Vulnerability from cvelistv5 – Published: 2020-09-16 15:39 – Updated: 2024-08-04 09:33
VLAI
Summary
A CWE-502 Deserialization of Untrusted Data vulnerability exists in SCADAPack 7x Remote Connect (V3.6.3.574 and prior) which could allow arbitrary code execution when an attacker builds a custom .PRJ file containing a malicious serialized buffer.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
n/a SCADAPack 7x Remote Connect V3.6.3.574 and prior. Affected: SCADAPack 7x Remote Connect V3.6.3.574 and prior.
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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