Common Weakness Enumeration
CWE-502
AllowedDeserialization of Untrusted Data
Abstraction: Base · Status: Draft
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
4850 vulnerabilities reference this CWE, most recent first.
CVE-2021-32824 (GCVE-0-2021-32824)
Vulnerability from cvelistv5 – Published: 2023-01-03 00:00 – Updated: 2025-03-10 21:33
VLAI
EPSS
VEX
Title
Regular expression Denial of Service in MooTools
Summary
Apache Dubbo is a java based, open source RPC framework. Versions prior to 2.6.10 and 2.7.10 are vulnerable to pre-auth remote code execution via arbitrary bean manipulation in the Telnet handler. The Dubbo main service port can be used to access a Telnet Handler which offers some basic methods to collect information about the providers and methods exposed by the service and it can even allow to shutdown the service. This endpoint is unprotected. Additionally, a provider method can be invoked using the `invoke` handler. This handler uses a safe version of FastJson to process the call arguments. However, the resulting list is later processed with `PojoUtils.realize` which can be used to instantiate arbitrary classes and invoke its setters. Even though FastJson is properly protected with a default blocklist, `PojoUtils.realize` is not, and an attacker can leverage that to achieve remote code execution. Versions 2.6.10 and 2.7.10 contain fixes for this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
Impacted products
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CVE-2021-32742 (GCVE-0-2021-32742)
Vulnerability from cvelistv5 – Published: 2021-07-09 14:00 – Updated: 2024-08-03 23:33
VLAI
EPSS
VEX
Title
Untrusted data fed into `Data.init(base32Encoded:)` can result in exposing server memory and/or crash
Summary
Vapor is a web framework for Swift. In versions 4.47.1 and prior, bug in the `Data.init(base32Encoded:)` function opens up the potential for exposing server memory and/or crashing the server (Denial of Service) for applications where untrusted data can end up in said function. Vapor does not currently use this function itself so this only impact applications that use the impacted function directly or through other dependencies. The vulnerability is patched in version 4.47.2. As a workaround, one may use an alternative to Vapor's built-in `Data.init(base32Encoded:)`.
Severity
7.5 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/vapor/vapor/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/vapor/vapor/releases/tag/4.47.2 | x_refsource_MISC |
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CVE-2021-32634 (GCVE-0-2021-32634)
Vulnerability from cvelistv5 – Published: 2021-05-21 17:15 – Updated: 2024-08-03 23:25
VLAI
EPSS
VEX
Title
Deserialization of Untrusted Data in Emissary
Summary
Emissary is a distributed, peer-to-peer, data-driven workflow framework. Emissary 6.4.0 is vulnerable to Unsafe Deserialization of post-authenticated requests to the [`WorkSpaceClientEnqueue.action`](https://github.com/NationalSecurityAgency/emissary/blob/30c54ef16c6eb6ed09604a929939fb9f66868382/src/main/java/emissary/server/mvc/internal/WorkSpaceClientEnqueueAction.java) REST endpoint. This issue may lead to post-auth Remote Code Execution. This issue has been patched in version 6.5.0. As a workaround, one can disable network access to Emissary from untrusted sources.
Severity
7.2 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/NationalSecurityAgency/emissar… | x_refsource_CONFIRM |
| https://github.com/NationalSecurityAgency/emissar… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NationalSecurityAgency | emissary |
Affected:
< 6.5.0
|
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CVE-2021-32568 (GCVE-0-2021-32568)
Vulnerability from cvelistv5 – Published: 2021-09-06 11:17 – Updated: 2024-08-03 23:25
VLAI
EPSS
VEX
Title
Deserialization of Untrusted Data in zmister2016/mrdoc
Summary
mrdoc is vulnerable to Deserialization of Untrusted Data
Severity
7.5 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
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| https://github.com/zmister2016/mrdoc/commit/bb49e… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zmister2016 | zmister2016/mrdoc |
Affected:
unspecified , < 0.7.1
(custom)
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CVE-2021-31474 (GCVE-0-2021-31474)
Vulnerability from cvelistv5 – Published: 2021-05-21 14:40 – Updated: 2024-08-03 23:03
VLAI
EPSS
VEX
Summary
This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Network Performance Monitor 2020.2.1. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SolarWinds.Serialization library. 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 SYSTEM. Was ZDI-CAN-12213.
Severity
9.8 (Critical)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
| https://documentation.solarwinds.com/en/success_c… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SolarWinds | Network Performance Monitor |
Affected:
2020.2.1
|
Credits
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CVE-2021-29508 (GCVE-0-2021-29508)
Vulnerability from cvelistv5 – Published: 2021-05-11 16:35 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Insecure deserialization in Wire
Summary
Due to how Wire handles type information in its serialization format, malicious payloads can be passed to a deserializer. e.g. using a surrogate on the sender end, an attacker can pass information about a different type for the receiving end. And by doing so allowing the serializer to create any type on the deserializing end. This is the same issue that exists for .NET BinaryFormatter https://docs.microsoft.com/en-us/visualstudio/code-quality/ca2300?view=vs-2019. This also applies to the fork of Wire.
Severity
9.1 (Critical)
CWE
- CWE-502 - {"CWE-502":"Deserialization of Untrusted Data"}
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/AsynkronIT/Wire/security/advis… | x_refsource_CONFIRM |
| https://www.nuget.org/packages/Wire/ | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AsynkronIT | Wire |
Affected:
<= 1.0.0
|
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CVE-2021-29505 (GCVE-0-2021-29505)
Vulnerability from cvelistv5 – Published: 2021-05-28 21:00 – Updated: 2025-05-29 23:30
VLAI
EPSS
VEX
Title
XStream is vulnerable to a Remote Command Execution attack
Summary
XStream is software for serializing Java objects to XML and back again. A vulnerability in XStream versions prior to 1.4.17 may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types is affected. The vulnerability is patched in version 1.4.17.
Severity
7.5 (High)
CWE
Assigner
References
20 references
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CVE-2021-29485 (GCVE-0-2021-29485)
Vulnerability from cvelistv5 – Published: 2021-06-29 18:35 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Remote Code Execution Vulnerability in Session Storage
Summary
Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, a malicious attacker can achieve Remote Code Execution (RCE) via a maliciously crafted Java deserialization gadget chain leveraged against the Ratpack session store. If one's application does not use Ratpack's session mechanism, it is not vulnerable. Ratpack 1.9.0 introduces a strict allow-list mechanism that mitigates this vulnerability when used. Two possible workarounds exist. The simplest mitigation for users of earlier versions is to reduce the likelihood of attackers being able to write to the session data store. Alternatively or additionally, the allow-list mechanism could be manually back ported by providing an alternative implementation of `SessionSerializer` that uses an allow-list.
Severity
9.9 (Critical)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ratpack/ratpack/security/advis… | x_refsource_CONFIRM |
| https://mvnrepository.com/artifact/io.ratpack/rat… | x_refsource_MISC |
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CVE-2021-29476 (GCVE-0-2021-29476)
Vulnerability from cvelistv5 – Published: 2021-04-27 20:55 – Updated: 2024-08-03 22:11
VLAI
EPSS
VEX
Title
Insecure Deserialization of untrusted data in rmccue/requests
Summary
Requests is a HTTP library written in PHP. Requests mishandles deserialization in FilteredIterator. The issue has been patched and users of `Requests` 1.6.0, 1.6.1 and 1.7.0 should update to version 1.8.0.
Severity
9.8 (Critical)
CWE
- CWE-502 - {"CWE-502":"Deserialization of Untrusted Data"}
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/WordPress/Requests/security/ad… | x_refsource_CONFIRM |
| https://github.com/rmccue/Requests/pull/421 | x_refsource_MISC |
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CVE-2021-27850 (GCVE-0-2021-27850)
Vulnerability from cvelistv5 – Published: 2021-04-15 07:40 – Updated: 2024-08-03 21:33
VLAI
EPSS
VEX
Title
Bypass of the fix for CVE-2019-0195
Summary
A critical unauthenticated remote code execution vulnerability was found all recent versions of Apache Tapestry. The affected versions include 5.4.5, 5.5.0, 5.6.2 and 5.7.0. The vulnerability I have found is a bypass of the fix for CVE-2019-0195. Recap: Before the fix of CVE-2019-0195 it was possible to download arbitrary class files from the classpath by providing a crafted asset file URL. An attacker was able to download the file `AppModule.class` by requesting the URL `http://localhost:8080/assets/something/services/AppModule.class` which contains a HMAC secret key. The fix for that bug was a blacklist filter that checks if the URL ends with `.class`, `.properties` or `.xml`. Bypass: Unfortunately, the blacklist solution can simply be bypassed by appending a `/` at the end of the URL: `http://localhost:8080/assets/something/services/AppModule.class/` The slash is stripped after the blacklist check and the file `AppModule.class` is loaded into the response. This class usually contains the HMAC secret key which is used to sign serialized Java objects. With the knowledge of that key an attacker can sign a Java gadget chain that leads to RCE (e.g. CommonsBeanUtils1 from ysoserial). Solution for this vulnerability: * For Apache Tapestry 5.4.0 to 5.6.1, upgrade to 5.6.2 or later. * For Apache Tapestry 5.7.0, upgrade to 5.7.1 or later.
Severity
No CVSS data available.
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread.html/r237ff7f286b… | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2021/04/15/1 | mailing-listx_refsource_MLIST |
| https://security.netapp.com/advisory/ntap-2021052… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tapestry |
Affected:
Apache Tapestry 5.5.0
Affected: Apache Tapestry 5.7.0 Affected: Apache Tapestry 5.4.5 , < Apache Tapestry 5.4.0* (custom) Affected: Apache Tapestry 5.6.2 , < Apache Tapestry 5.6.0* (custom) |
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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.