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.

4927 vulnerabilities reference this CWE, most recent first.

CVE-2021-43360 (GCVE-0-2021-43360)

Vulnerability from cvelistv5 – Published: 2021-12-01 02:00 – Updated: 2024-09-17 03:44
VLAI
Title
Sunnet eHRD - Insecure Deserialization
Summary
Sunnet eHRD e-mail delivery task schedule’s serialization function has inadequate input object validation and restriction, which allows a post-authenticated remote attacker with database access privilege, to execute arbitrary code and control the system or interrupt services.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Sunnet eHRD Affected: 8
Affected: 9
Create a notification for this product.
Date Public
2021-11-30 00:00
Show details on NVD website
To clipboard 

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CVE-2021-43297 (GCVE-0-2021-43297)

Vulnerability from cvelistv5 – Published: 2022-01-10 15:25 – Updated: 2024-08-04 03:55
VLAI
Title
Dubbo Hessian cause RCE when parse error
Summary
A deserialization vulnerability existed in dubbo hessian-lite 3.2.11 and its earlier versions, which could lead to malicious code execution. Most Dubbo users use Hessian2 as the default serialization/deserialization protocol, during Hessian catch unexpected exceptions, Hessian will log out some imformation for users, which may cause remote command execution. This issue affects Apache Dubbo Apache Dubbo 2.6.x versions prior to 2.6.12; Apache Dubbo 2.7.x versions prior to 2.7.15; Apache Dubbo 3.0.x versions prior to 3.0.5.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Dubbo Affected: Apache Dubbo 2.6.x , < 2.6.12 (custom)
Affected: Apache Dubbo 2.7.x , < 2.7.15 (custom)
Affected: Apache Dubbo 3.0.x , < 3.0.5 (custom)
Create a notification for this product.
Credits
There are differences in the use of entrances. The following people or organizations reported security vulnerabilities independently. Sort by discovery time: 1. cxc&yhbl&wh1t3p1g&fynch3r from G5-RD6@IIE 2. yxxx
Show details on NVD website
To clipboard 

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CVE-2021-42698 (GCVE-0-2021-42698)

Vulnerability from cvelistv5 – Published: 2021-11-05 15:39 – Updated: 2024-08-04 03:38
VLAI
Title
AzeoTech DAQFactory
Summary
Project files are stored memory objects in the form of binary serialized data that can later be read and deserialized again to instantiate the original objects in memory. Malicious manipulation of these files may allow an attacker to corrupt memory.
Severity
7.8 (High)
CVSS:3.1/AV:L/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
AzeoTech DAQFactory Affected: All versions , ≤ New version (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-42550 (GCVE-0-2021-42550)

Vulnerability from cvelistv5 – Published: 2021-12-16 00:00 – Updated: 2024-08-04 03:38
VLAI
Title
RCE from attacker with configuration edit priviledges through JNDI lookup
Summary
In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.
Severity
6.6 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
QOS.ch logback Affected: unspecified , < 1.2.9 (custom)
Affected: unspecified , < 1.3.0-alpha11 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-42392 (GCVE-0-2021-42392)

Vulnerability from cvelistv5 – Published: 2022-01-07 00:00 – Updated: 2024-08-04 03:30
VLAI
Summary
The org.h2.util.JdbcUtils.getConnection method of the H2 database takes as parameters the class name of the driver and URL of the database. An attacker may pass a JNDI driver name and a URL leading to a LDAP or RMI servers, causing remote code execution. This can be exploited through various attack vectors, most notably through the H2 Console which leads to unauthenticated remote code execution.
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version
h2database h2 Affected: 1.1.000 , < * (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-42130 (GCVE-0-2021-42130)

Vulnerability from cvelistv5 – Published: 2021-12-07 13:13 – Updated: 2024-08-04 03:30
VLAI
Summary
A deserialization of untrusted data vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform arbitrary code execution.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data (CWE-502)
Assigner
References
Impacted products
Vendor Product Version
n/a Ivanti Avalanche Affected: 6.3.3
Show details on NVD website
To clipboard 

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CVE-2021-42127 (GCVE-0-2021-42127)

Vulnerability from cvelistv5 – Published: 2021-12-07 13:13 – Updated: 2024-08-04 03:30
VLAI
Summary
A deserialization of untrusted data vulnerability exists in Ivanti Avalanche before 6.3.3 using Inforail Service allows arbitrary code execution via Data Repository Service.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data (CWE-502)
Assigner
References
Impacted products
Vendor Product Version
n/a Ivanti Avalanche Affected: 6.3.3
Show details on NVD website
To clipboard 

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CVE-2021-42125 (GCVE-0-2021-42125)

Vulnerability from cvelistv5 – Published: 2021-12-07 13:12 – Updated: 2024-08-04 03:30
VLAI
Summary
An unrestricted file upload vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to write dangerous files.
Severity
No CVSS data available.
CWE
  • CWE-502 - Deserialization of Untrusted Data (CWE-502)
Assigner
References
Impacted products
Vendor Product Version
n/a Ivanti Avalance Affected: 6.3.3
Show details on NVD website
To clipboard 

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CVE-2021-41616 (GCVE-0-2021-41616)

Vulnerability from cvelistv5 – Published: 2021-09-30 07:55 – Updated: 2025-04-23 19:25
VLAI
Title
Apache ddlutils 1.0 readobject vulnerability
Summary
Apache DB DdlUtils 1.0 included a BinaryObjectsHelper that was intended for use when migrating database data with a SQL data type of BINARY, VARBINARY, LONGVARBINARY, or BLOB between databases using the ddlutils features. The BinaryObjectsHelper class was insecure and used ObjectInputStream.readObject without validating that the input data was safe to deserialize. Please note that DdlUtils is no longer being actively developed. To address the insecurity of the BinaryObjectHelper class, the following changes to DdlUtils have been made: (1) BinaryObjectsHelper.java has been deleted from the DdlUtils source repository and the DdlUtils feature of propagating data of SQL binary types is therefore no longer present in DdlUtils; (2) The ddlutils-1.0 release has been removed from the Apache Release Distribution Infrastructure; (3) The DdlUtils web site has been updated to indicate that DdlUtils is now available only as source code, not as a packaged release.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache DB ddlutils Affected: Apache DB ddlutils 1.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2021-41129 (GCVE-0-2021-41129)

Vulnerability from cvelistv5 – Published: 2021-10-06 20:05 – Updated: 2024-08-04 02:59
VLAI
Title
Authentication bypass in Pterodactyl
Summary
Pterodactyl is an open-source game server management panel built with PHP 7, React, and Go. A malicious user can modify the contents of a `confirmation_token` input during the two-factor authentication process to reference a cache value not associated with the login attempt. In rare cases this can allow a malicious actor to authenticate as a random user in the Panel. The malicious user must target an account with two-factor authentication enabled, and then must provide a correct two-factor authentication token before being authenticated as that user. Due to a validation flaw in the logic handling user authentication during the two-factor authentication process a malicious user can trick the system into loading credentials for an arbitrary user by modifying the token sent to the server. This authentication flaw is present in the `LoginCheckpointController@__invoke` method which handles two-factor authentication for a user. This controller looks for a request input parameter called `confirmation_token` which is expected to be a 64 character random alpha-numeric string that references a value within the Panel's cache containing a `user_id` value. This value is then used to fetch the user that attempted to login, and lookup their two-factor authentication token. Due to the design of this system, any element in the cache that contains only digits could be referenced by a malicious user, and whatever value is stored at that position would be used as the `user_id`. There are a few different areas of the Panel that store values into the cache that are integers, and a user who determines what those cache keys are could pass one of those keys which would cause this code pathway to reference an arbitrary user. At its heart this is a high-risk login bypass vulnerability. However, there are a few additional conditions that must be met in order for this to be successfully executed, notably: 1.) The account referenced by the malicious cache key must have two-factor authentication enabled. An account without two-factor authentication would cause an exception to be triggered by the authentication logic, thusly exiting this authentication flow. 2.) Even if the malicious user is able to reference a valid cache key that references a valid user account with two-factor authentication, they must provide a valid two-factor authentication token. However, due to the design of this endpoint once a valid user account is found with two-factor authentication enabled there is no rate-limiting present, thusly allowing an attacker to brute force combinations until successful. This leads to a third condition that must be met: 3.) For the duration of this attack sequence the cache key being referenced must continue to exist with a valid `user_id` value. Depending on the specific key being used for this attack, this value may disappear quickly, or be changed by other random user interactions on the Panel, outside the control of the attacker. In order to mitigate this vulnerability the underlying authentication logic was changed to use an encrypted session store that the user is therefore unable to control the value of. This completely removed the use of a user-controlled value being used. In addition, the code was audited to ensure this type of vulnerability is not present elsewhere.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-502 - Deserialization of Untrusted Data
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
Impacted products
Vendor Product Version
pterodactyl panel Affected: >= 1.0.0, < 1.6.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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            },
            {
              "name": "https://github.com/pterodactyl/panel/releases/tag/v1.6.2",
              "refsource": "MISC",
              "url": "https://github.com/pterodactyl/panel/releases/tag/v1.6.2"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-5vfx-8w6m-h3v4",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-41129",
    "datePublished": "2021-10-06T20:05:11.000Z",
    "dateReserved": "2021-09-15T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:59:31.602Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}
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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