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.
4798 vulnerabilities reference this CWE, most recent first.
GHSA-X499-M338-RW37
Vulnerability from github – Published: 2022-11-29 21:30 – Updated: 2022-12-02 00:30SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with valid access to SolarWinds Web Console to execute arbitrary commands.
{
"affected": [],
"aliases": [
"CVE-2022-36964"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-29T21:15:00Z",
"severity": "HIGH"
},
"details": "SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with valid access to SolarWinds Web Console to execute arbitrary commands.",
"id": "GHSA-x499-m338-rw37",
"modified": "2022-12-02T00:30:26Z",
"published": "2022-11-29T21:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-36964"
},
{
"type": "WEB",
"url": "https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/solarwinds_platform_2022-4_release_notes.htm"
},
{
"type": "WEB",
"url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2022-36964"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X4X5-JV3X-9C7M
Vulnerability from github – Published: 2024-03-20 15:44 – Updated: 2024-03-20 21:37Summary
deserializing json data using qiskit_ibm_runtime.RuntimeDecoder can be made to execute arbitrary code given a correctly formatted input string
Details
RuntimeDecoder is supposed to be able to deserialize JSON strings containing various special types encoded via RuntimeEncoder. However, one can structure a malicious payload to cause the decoder to spawn a subprocess and execute arbitrary code, exploiting this block of code: https://github.com/Qiskit/qiskit-ibm-runtime/blob/16e90f475e78a9d2ae77daa139ef750cfa84ca82/qiskit_ibm_runtime/utils/json.py#L156-L159
PoC
malicious_data = {
"__type__": "settings",
"__module__": "subprocess",
"__class__": "Popen",
"__value__": {
"args": ["echo", "hi"]
},
}
json_str = json.dumps(malicious_data)
_ = json.loads(json_str, cls=qiskit_ibm_runtime.RuntimeDecoder) # prints "hi" to the terminal
(where obviously "echo hi" can be replaced with something much more malicious)
notably the following also makes it through the runtime API, with malicious_data serialized client-side via RuntimeEncoder (and therefore presumably deserialized server-side via RuntimeDecoder?)
service = qiskit_ibm_runtime(<ibm_cloud_credentials>)
job = service.run("qasm3-runner", malicious_data)
print(job.status()) # prints "JobStatus.QUEUED"
Impact
i don't know if qiskit_ibm_runtime.RuntimeDecoder is used server-side so this may or may not be a serious vulnerability on your end (however it's definitely a security hole for anyone using the library to deserialize third-party data)
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "qiskit-ibm-runtime"
},
"ranges": [
{
"events": [
{
"introduced": "0.1.0"
},
{
"fixed": "0.21.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-29032"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2024-03-20T15:44:22Z",
"nvd_published_at": "2024-03-20T21:15:31Z",
"severity": "MODERATE"
},
"details": "### Summary\n\ndeserializing json data using `qiskit_ibm_runtime.RuntimeDecoder` can be made to execute arbitrary code given a correctly formatted input string\n\n### Details\n\n`RuntimeDecoder` is supposed to be able to deserialize JSON strings containing various special types encoded via `RuntimeEncoder`. However, one can structure a malicious payload to cause the decoder to spawn a subprocess and execute arbitrary code, exploiting this block of code: https://github.com/Qiskit/qiskit-ibm-runtime/blob/16e90f475e78a9d2ae77daa139ef750cfa84ca82/qiskit_ibm_runtime/utils/json.py#L156-L159\n\n### PoC\n\n```python\nmalicious_data = {\n \"__type__\": \"settings\",\n \"__module__\": \"subprocess\",\n \"__class__\": \"Popen\",\n \"__value__\": {\n \"args\": [\"echo\", \"hi\"]\n },\n}\njson_str = json.dumps(malicious_data)\n\n_ = json.loads(json_str, cls=qiskit_ibm_runtime.RuntimeDecoder) # prints \"hi\" to the terminal\n```\n(where obviously \"echo hi\" can be replaced with something much more malicious)\n\nnotably the following also makes it through the runtime API, with `malicious_data` serialized client-side via `RuntimeEncoder` (and therefore presumably deserialized server-side via `RuntimeDecoder`?)\n```python\nservice = qiskit_ibm_runtime(\u003cibm_cloud_credentials\u003e)\njob = service.run(\"qasm3-runner\", malicious_data)\nprint(job.status()) # prints \"JobStatus.QUEUED\"\n```\n\n### Impact\n\ni don\u0027t know if `qiskit_ibm_runtime.RuntimeDecoder` is used server-side so this may or may not be a serious vulnerability on your end (however it\u0027s definitely a security hole for anyone using the library to deserialize third-party data)",
"id": "GHSA-x4x5-jv3x-9c7m",
"modified": "2024-03-20T21:37:56Z",
"published": "2024-03-20T15:44:22Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/Qiskit/qiskit-ibm-runtime/security/advisories/GHSA-x4x5-jv3x-9c7m"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-29032"
},
{
"type": "WEB",
"url": "https://github.com/Qiskit/qiskit-ibm-runtime/commit/b78fca114133051805d00043a404b25a33835f4d"
},
{
"type": "PACKAGE",
"url": "https://github.com/Qiskit/qiskit-ibm-runtime"
},
{
"type": "WEB",
"url": "https://github.com/Qiskit/qiskit-ibm-runtime/blob/16e90f475e78a9d2ae77daa139ef750cfa84ca82/qiskit_ibm_runtime/utils/json.py#L156-L159"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
],
"summary": "`qiskit_ibm_runtime.RuntimeDecoder` can execute arbitrary code"
}
GHSA-X563-6HQV-26MR
Vulnerability from github – Published: 2023-11-17 21:47 – Updated: 2023-11-17 21:47Impact
Deserialization of untrusted data in IPC and Parquet readers in PyArrow versions 0.14.0 to 14.0.0 allows arbitrary code execution. An application is vulnerable if it reads Arrow IPC, Feather or Parquet data from untrusted sources (for example user-supplied input files). This vulnerability only affects PyArrow, not other Apache Arrow implementations or bindings.
Note that Ibis itself makes extremely limited use of pyarrow.parquet.read_table:
read_tableis used in tests, where the input file is entirely controlled by the Ibis developersread_tableis used in theibis/examples/__init__.pyas a fallback for backends that don't support reading Parquet directly. Parquet data used inibis.examplesare also managed by the Ibis developers. This Parquet data is generated from CSV files and SQLite databases.- The Pandas and Dask backends both use PyArrow to read Parquet files and are therefore affected.
Ibis does not make use of APIs that directly read from either Arrow IPC files or Feather files.
Patches
Ibis imports the pyarrow_hotfix package wherever pyarrow is used, as of version 7.1.0.
Upgrading to Arrow 14.0.1 is also a possible solution, starting in Ibis 7.1.0.
Workarounds
Install pyarrow_hotfix and run import pyarrow_hotfix ahead of any and all import ibis statements.
For example:
import ibis
becomes
import pyarrow_hotfix
import ibis
References
https://www.cve.org/CVERecord?id=CVE-2023-47248 https://nvd.nist.gov/vuln/detail/CVE-2023-47248
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "ibis-framework"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.1.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2023-11-17T21:47:11Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "### Impact\n\nDeserialization of untrusted data in IPC and Parquet readers in PyArrow versions 0.14.0 to 14.0.0 allows arbitrary code execution. An application is vulnerable if it reads Arrow IPC, Feather or Parquet data from untrusted sources (for example user-supplied input files). This vulnerability only affects PyArrow, not other Apache Arrow implementations or bindings.\n\nNote that Ibis itself makes **extremely limited** use of `pyarrow.parquet.read_table`:\n\n1. `read_table` is used in tests, where the input file is entirely controlled by the Ibis developers\n2. `read_table` is used in the `ibis/examples/__init__.py` as a fallback for backends that don\u0027t support reading Parquet directly. Parquet data used in `ibis.examples` are also managed by the Ibis developers. This Parquet data is generated from CSV files and SQLite databases.\n3. The Pandas and Dask backends both use PyArrow to read Parquet files and are therefore affected.\n\nIbis **does not** make use of APIs that directly read from either Arrow IPC files or Feather files.\n\n### Patches\n\nIbis imports the `pyarrow_hotfix` package wherever pyarrow is used, as of version 7.1.0.\n\nUpgrading to Arrow 14.0.1 is also a possible solution, starting in Ibis 7.1.0.\n\n### Workarounds\n\nInstall [`pyarrow_hotfix`](https://pypi.org/project/pyarrow-hotfix/) and run `import pyarrow_hotfix` ahead of any and all `import ibis` statements.\n\nFor example:\n\n```python\nimport ibis\n```\n\nbecomes\n\n```python\nimport pyarrow_hotfix\nimport ibis\n```\n\n### References\n\nhttps://www.cve.org/CVERecord?id=CVE-2023-47248\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-47248",
"id": "GHSA-x563-6hqv-26mr",
"modified": "2023-11-17T21:47:11Z",
"published": "2023-11-17T21:47:11Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/ibis-project/ibis/security/advisories/GHSA-x563-6hqv-26mr"
},
{
"type": "WEB",
"url": "https://github.com/ibis-project/ibis/commit/0fa1e5dc06783c01e912e8de4d7e10186ca0e364"
},
{
"type": "PACKAGE",
"url": "https://github.com/ibis-project/ibis"
},
{
"type": "WEB",
"url": "https://github.com/ibis-project/ibis/releases/tag/7.1.0"
}
],
"schema_version": "1.4.0",
"severity": [],
"summary": "Ibis PyArrow dependency allows arbitrary code execution when loading a malicious data file"
}
GHSA-X57G-XJ73-77GW
Vulnerability from github – Published: 2022-09-07 00:01 – Updated: 2026-04-08 21:31The Migration, Backup, Staging – WPvivid plugin for WordPress is vulnerable to deserialization of untrusted input via the 'path' parameter in versions up to, and including 0.9.74. This makes it possible for authenticated attackers with administrative privileges to call files using a PHAR wrapper that will deserialize and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.
{
"affected": [],
"aliases": [
"CVE-2022-2442"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-09-06T18:15:00Z",
"severity": "HIGH"
},
"details": "The Migration, Backup, Staging \u2013 WPvivid plugin for WordPress is vulnerable to deserialization of untrusted input via the \u0027path\u0027 parameter in versions up to, and including 0.9.74. This makes it possible for authenticated attackers with administrative privileges to call files using a PHAR wrapper that will deserialize and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.",
"id": "GHSA-x57g-xj73-77gw",
"modified": "2026-04-08T21:31:44Z",
"published": "2022-09-07T00:01:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2442"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/trunk/includes/staging/class-wpvivid-staging.php?rev=2749419#L1747"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/browser/wpvivid-backuprestore/trunk/includes/staging/class-wpvivid-staging.php?rev=2749419#L1783"
},
{
"type": "WEB",
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2766112%40wpvivid-backuprestore%2Ftrunk%2Fincludes%2Fstaging%2Fclass-wpvivid-staging.php\u0026new=2766112%40wpvivid-backuprestore%2Ftrunk%2Fincludes%2Fstaging%2Fclass-wpvivid-staging.php"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b7e2ca2e-c495-47f8-9c18-da5ba73d9e70?source=cve"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2442"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X5RH-6M69-MWG4
Vulnerability from github – Published: 2024-12-02 21:31 – Updated: 2024-12-11 18:30JFinal CMS 5.1.0 is vulnerable to Command Execution via unauthorized execution of deserialization in the file ApiForm.java
{
"affected": [],
"aliases": [
"CVE-2024-53477"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-02T21:15:11Z",
"severity": "CRITICAL"
},
"details": "JFinal CMS 5.1.0 is vulnerable to Command Execution via unauthorized execution of deserialization in the file ApiForm.java",
"id": "GHSA-x5rh-6m69-mwg4",
"modified": "2024-12-11T18:30:38Z",
"published": "2024-12-02T21:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53477"
},
{
"type": "WEB",
"url": "https://gist.github.com/kaoniniang2/c2deceea281fcd0aec5a8165183be3c1"
},
{
"type": "WEB",
"url": "https://github.com/jflyfox/jfinal_cms/releases/tag/v5.1.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X5X7-57R8-GRMR
Vulnerability from github – Published: 2026-01-22 18:30 – Updated: 2026-01-28 18:30Deserialization of Untrusted Data vulnerability in designthemes OneLife onelife allows Object Injection.This issue affects OneLife: from n/a through <= 3.9.
{
"affected": [],
"aliases": [
"CVE-2025-69002"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-22T17:16:15Z",
"severity": "HIGH"
},
"details": "Deserialization of Untrusted Data vulnerability in designthemes OneLife onelife allows Object Injection.This issue affects OneLife: from n/a through \u003c= 3.9.",
"id": "GHSA-x5x7-57r8-grmr",
"modified": "2026-01-28T18:30:45Z",
"published": "2026-01-22T18:30:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-69002"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/onelife/vulnerability/wordpress-onelife-theme-3-9-php-object-injection-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X65C-CG4W-M3J6
Vulnerability from github – Published: 2023-01-03 00:30 – Updated: 2023-01-09 21:30The Welcart e-Commerce WordPress plugin before 2.8.6 does not validate user input before using it in file_exist() functions via various AJAX actions available to any authenticated users, which could allow users with a role as low as subscriber to perform PHAR deserialisation when they can upload a file and a suitable gadget chain is present on the blog
{
"affected": [],
"aliases": [
"CVE-2022-4237"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-02T22:15:00Z",
"severity": "HIGH"
},
"details": "The Welcart e-Commerce WordPress plugin before 2.8.6 does not validate user input before using it in file_exist() functions via various AJAX actions available to any authenticated users, which could allow users with a role as low as subscriber to perform PHAR deserialisation when they can upload a file and a suitable gadget chain is present on the blog",
"id": "GHSA-x65c-cg4w-m3j6",
"modified": "2023-01-09T21:30:22Z",
"published": "2023-01-03T00:30:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4237"
},
{
"type": "WEB",
"url": "https://wpscan.com/vulnerability/7a4b790c-49ae-46bc-9544-e188deae243f"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X69R-8F37-6MWC
Vulnerability from github – Published: 2022-05-24 17:41 – Updated: 2022-05-24 17:41NetMotion Mobility before 11.73 and 12.x before 12.02 allows unauthenticated remote attackers to execute arbitrary code as SYSTEM because of Java deserialization in RpcServlet.
{
"affected": [],
"aliases": [
"CVE-2021-26913"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-02-08T22:15:00Z",
"severity": "CRITICAL"
},
"details": "NetMotion Mobility before 11.73 and 12.x before 12.02 allows unauthenticated remote attackers to execute arbitrary code as SYSTEM because of Java deserialization in RpcServlet.",
"id": "GHSA-x69r-8f37-6mwc",
"modified": "2022-05-24T17:41:21Z",
"published": "2022-05-24T17:41:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-26913"
},
{
"type": "WEB",
"url": "https://ssd-disclosure.com/?p=4676"
},
{
"type": "WEB",
"url": "https://ssd-disclosure.com/ssd-advisory-netmotion-mobility-server-multiple-deserialization-of-untrusted-data-lead-to-rce"
},
{
"type": "WEB",
"url": "https://www.netmotionsoftware.com/security-advisories/security-vulnerability-in-mobility-web-server-november-19-2020"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-X6F4-R93C-87XG
Vulnerability from github – Published: 2023-02-15 21:30 – Updated: 2023-02-24 21:30SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with Orion admin-level account access to SolarWinds Web Console to execute arbitrary commands.
{
"affected": [],
"aliases": [
"CVE-2022-47507"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-15T19:15:00Z",
"severity": "HIGH"
},
"details": "SolarWinds Platform was susceptible to the Deserialization of Untrusted Data. This vulnerability allows a remote adversary with Orion admin-level account access to SolarWinds Web Console to execute arbitrary commands.",
"id": "GHSA-x6f4-r93c-87xg",
"modified": "2023-02-24T21:30:20Z",
"published": "2023-02-15T21:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-47507"
},
{
"type": "WEB",
"url": "https://documentation.solarwinds.com/en/success_center/orionplatform/content/release_notes/solarwinds_platform_2023-1_release_notes.htm"
},
{
"type": "WEB",
"url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2022-47507"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-X6MP-6WVC-9F66
Vulnerability from github – Published: 2026-03-24 21:31 – Updated: 2026-03-24 21:31NVIDIA APEX for Linux contains a vulnerability where an unauthorized attacker could cause a deserialization of untrusted data. This vulnerability affects environments that use PyTorch versions earlier than 2.6. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, data tampering, and information disclosure.
{
"affected": [],
"aliases": [
"CVE-2025-33244"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-24T21:16:24Z",
"severity": "CRITICAL"
},
"details": "NVIDIA APEX for Linux contains a vulnerability where an unauthorized attacker could cause a deserialization of untrusted data. This vulnerability affects environments that use PyTorch versions earlier than 2.6. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, data tampering, and information disclosure.",
"id": "GHSA-x6mp-6wvc-9f66",
"modified": "2026-03-24T21:31:24Z",
"published": "2026-03-24T21:31:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-33244"
},
{
"type": "WEB",
"url": "https://nvidia.custhelp.com/app/answers/detail/a_id/5782"
},
{
"type": "WEB",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-33244"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation
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
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
Explicitly define a final object() to prevent deserialization.
Mitigation
- 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
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
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
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.