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.
4801 vulnerabilities reference this CWE, most recent first.
GHSA-R69J-R7VF-PFX7
Vulnerability from github – Published: 2022-05-24 19:14 – Updated: 2022-05-24 19:14The management tool in MyLittleBackup up to and including 1.7 allows remote attackers to execute arbitrary code because machineKey is hardcoded (the same for all customers' installations) in web.config, and can be used to send serialized ASP code.
{
"affected": [],
"aliases": [
"CVE-2021-39392"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-15T17:15:00Z",
"severity": "CRITICAL"
},
"details": "The management tool in MyLittleBackup up to and including 1.7 allows remote attackers to execute arbitrary code because machineKey is hardcoded (the same for all customers\u0027 installations) in web.config, and can be used to send serialized ASP code.",
"id": "GHSA-r69j-r7vf-pfx7",
"modified": "2022-05-24T19:14:37Z",
"published": "2022-05-24T19:14:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39392"
},
{
"type": "WEB",
"url": "https://gist.github.com/omriinbar/65827626e63f15e3e50557e2d9d61281"
},
{
"type": "WEB",
"url": "http://www.mylittlebackup.com/mlb/zip/mlb_1.7.zip"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-R6CQ-W3Q4-7RWF
Vulnerability from github – Published: 2024-11-04 03:30 – Updated: 2024-11-04 03:30A vulnerability, which was classified as critical, was found in ThinkAdmin up to 6.1.67. Affected is the function script of the file /app/admin/controller/api/Plugs.php. The manipulation of the argument uptoken leads to deserialization. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
{
"affected": [],
"aliases": [
"CVE-2024-10749"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-04T01:15:03Z",
"severity": "LOW"
},
"details": "A vulnerability, which was classified as critical, was found in ThinkAdmin up to 6.1.67. Affected is the function script of the file /app/admin/controller/api/Plugs.php. The manipulation of the argument uptoken leads to deserialization. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
"id": "GHSA-r6cq-w3q4-7rwf",
"modified": "2024-11-04T03:30:39Z",
"published": "2024-11-04T03:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10749"
},
{
"type": "WEB",
"url": "https://github.com/pwysec/Xmwcq/blob/main/1.md"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.282918"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.282918"
},
{
"type": "WEB",
"url": "https://vuldb.com/?submit.432436"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-R6HG-PGVJ-26R6
Vulnerability from github – Published: 2025-06-30 09:30 – Updated: 2025-07-01 09:30Delta Electronics DTM Soft Project File Parsing Deserialization of Untrusted Data Remote Code Execution
{
"affected": [],
"aliases": [
"CVE-2025-53415"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-30T09:15:26Z",
"severity": "HIGH"
},
"details": "Delta Electronics DTM Soft\u00a0Project File Parsing Deserialization of Untrusted Data Remote Code Execution",
"id": "GHSA-r6hg-pgvj-26r6",
"modified": "2025-07-01T09:30:32Z",
"published": "2025-06-30T09:30:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53415"
},
{
"type": "WEB",
"url": "https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2025-00009_DTM%20Soft%20and%20DTN%20Soft%20BIN%20File%20Parsing%20Deserialization%20of%20Untrusted%20Data.pdf"
},
{
"type": "WEB",
"url": "https://www.deltaww.com/en-US/Cybersecurity_Advisory"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R6HW-PM67-R37M
Vulnerability from github – Published: 2026-03-25 18:31 – Updated: 2026-04-29 12:32Deserialization of Untrusted Data vulnerability in Mikado-Themes Stål stal allows Object Injection.This issue affects Stål: from n/a through < 1.7.
{
"affected": [],
"aliases": [
"CVE-2026-32511"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-25T17:17:03Z",
"severity": "MODERATE"
},
"details": "Deserialization of Untrusted Data vulnerability in Mikado-Themes St\u00e5l stal allows Object Injection.This issue affects St\u00e5l: from n/a through \u003c 1.7.",
"id": "GHSA-r6hw-pm67-r37m",
"modified": "2026-04-29T12:32:57Z",
"published": "2026-03-25T18:31:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32511"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/Wordpress/Theme/stal/vulnerability/wordpress-staal-theme-1-7-arbitrary-object-instantiation-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-R6J4-VQVJ-XF3V
Vulnerability from github – Published: 2023-08-13 12:30 – Updated: 2024-04-04 06:53Deserialization vulnerability in the input module. Successful exploitation of this vulnerability may affect availability.
{
"affected": [],
"aliases": [
"CVE-2023-39396"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-08-13T12:15:46Z",
"severity": "HIGH"
},
"details": "Deserialization vulnerability in the input module. Successful exploitation of this vulnerability may affect availability.",
"id": "GHSA-r6j4-vqvj-xf3v",
"modified": "2024-04-04T06:53:52Z",
"published": "2023-08-13T12:30:19Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-39396"
},
{
"type": "WEB",
"url": "https://consumer.huawei.com/en/support/bulletin/2023/8"
},
{
"type": "WEB",
"url": "https://device.harmonyos.com/en/docs/security/update/security-bulletins-202308-0000001667644725"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R6JX-9G48-2R5R
Vulnerability from github – Published: 2021-08-25 14:41 – Updated: 2024-11-13 21:14Impact
TensorFlow and Keras can be tricked to perform arbitrary code execution when deserializing a Keras model from YAML format.
from tensorflow.keras import models
payload = '''
!!python/object/new:type
args: ['z', !!python/tuple [], {'extend': !!python/name:exec }]
listitems: "__import__('os').system('cat /etc/passwd')"
'''
models.model_from_yaml(payload)
The implementation uses yaml.unsafe_load which can perform arbitrary code execution on the input.
Patches
Given that YAML format support requires a significant amount of work, we have removed it for now.
We have patched the issue in GitHub commit 23d6383eb6c14084a8fc3bdf164043b974818012.
The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
For more information
Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.
Attribution
This vulnerability has been reported by Arjun Shibu.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "2.4.0"
},
{
"fixed": "2.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0"
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.4.0"
},
{
"fixed": "2.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0"
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.4.0"
},
{
"fixed": "2.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.5.0"
},
{
"fixed": "2.5.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0"
]
}
],
"aliases": [
"CVE-2021-37678"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-24T16:15:38Z",
"nvd_published_at": "2021-08-12T23:15:00Z",
"severity": "HIGH"
},
"details": "### Impact\nTensorFlow and Keras can be tricked to perform arbitrary code execution when deserializing a Keras model from YAML format.\n\n```python\nfrom tensorflow.keras import models\n\npayload = \u0027\u0027\u0027\n!!python/object/new:type\nargs: [\u0027z\u0027, !!python/tuple [], {\u0027extend\u0027: !!python/name:exec }]\nlistitems: \"__import__(\u0027os\u0027).system(\u0027cat /etc/passwd\u0027)\"\n\u0027\u0027\u0027\n \nmodels.model_from_yaml(payload)\n```\n \nThe [implementation](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/python/keras/saving/model_config.py#L66-L104) uses `yaml.unsafe_load` which can perform arbitrary code execution on the input.\n\n### Patches\nGiven that YAML format support requires a significant amount of work, we have removed it for now.\n\nWe have patched the issue in GitHub commit [23d6383eb6c14084a8fc3bdf164043b974818012](https://github.com/tensorflow/tensorflow/commit/23d6383eb6c14084a8fc3bdf164043b974818012).\n\nThe fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.\n\n### For more information \nPlease consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.\n\n### Attribution\nThis vulnerability has been reported by Arjun Shibu.",
"id": "GHSA-r6jx-9g48-2r5r",
"modified": "2024-11-13T21:14:31Z",
"published": "2021-08-25T14:41:12Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-r6jx-9g48-2r5r"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-37678"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/commit/1df5a69e9f1a18a937e7907223066e606bf466b9"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/commit/23d6383eb6c14084a8fc3bdf164043b974818012"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/commit/8e47a685785bef8f81bcb996048921dfde08a9ab"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/commit/a09ab4e77afdcc6e1e045c9d41d5edab63aafc1a"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-591.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-789.yaml"
},
{
"type": "WEB",
"url": "https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-300.yaml"
},
{
"type": "PACKAGE",
"url": "https://github.com/tensorflow/tensorflow"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Arbitrary code execution due to YAML deserialization"
}
GHSA-R72Q-6CH6-CC79
Vulnerability from github – Published: 2024-11-13 18:32 – Updated: 2024-11-14 18:30In onReceive of AppRestrictionsFragment.java, there is a possible escalation of privilege due to unsafe deserialization. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2024-43080"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-13T18:15:20Z",
"severity": "HIGH"
},
"details": "In onReceive of AppRestrictionsFragment.java, there is a possible escalation of privilege due to unsafe deserialization. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.",
"id": "GHSA-r72q-6ch6-cc79",
"modified": "2024-11-14T18:30:34Z",
"published": "2024-11-13T18:32:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43080"
},
{
"type": "WEB",
"url": "https://android.googlesource.com/platform/packages/apps/Settings/+/26ce013dfd7e59a451acc66e7f05564e0884d46b"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/2024-11-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R759-CJRX-95VC
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-17 18:35Unauthenticated PHP Object Injection in Plumbing <= 1.6 versions.
{
"affected": [],
"aliases": [
"CVE-2025-69127"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T14:17:33Z",
"severity": "CRITICAL"
},
"details": "Unauthenticated PHP Object Injection in Plumbing \u003c= 1.6 versions.",
"id": "GHSA-r759-cjrx-95vc",
"modified": "2026-06-17T18:35:54Z",
"published": "2026-06-17T18:35:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-69127"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/theme/plumbing-parts/vulnerability/wordpress-plumbing-theme-1-6-php-object-injection-vulnerability?_s_id=cve"
}
],
"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-R77X-PQM4-6252
Vulnerability from github – Published: 2026-02-18 15:31 – Updated: 2026-02-24 18:30A vulnerability has been identified in Rexroth IndraWorks. This flaw allows an attacker to execute arbitrary code on the user's system by parsing a manipulated file containing malicious serialized data. Exploitation requires user interaction, specifically opening a specially crafted file, which then causes the application to deserialize the malicious data, enabling Remote Code Execution (RCE). This can lead to a complete compromise of the system running Rexroth IndraWorks.
{
"affected": [],
"aliases": [
"CVE-2025-60037"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-18T14:16:04Z",
"severity": "HIGH"
},
"details": "A vulnerability\u00a0has been identified in Rexroth IndraWorks. This flaw allows an attacker to execute arbitrary code on the user\u0027s system by parsing a manipulated file containing malicious serialized data. Exploitation requires user interaction, specifically opening a specially crafted file, which then causes the application to deserialize the malicious data, enabling Remote Code Execution (RCE). This can lead to a complete compromise of the system running Rexroth IndraWorks.",
"id": "GHSA-r77x-pqm4-6252",
"modified": "2026-02-24T18:30:59Z",
"published": "2026-02-18T15:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60037"
},
{
"type": "WEB",
"url": "https://psirt.bosch.com/security-advisories/BOSCH-SA-591522.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-R7PG-V2C8-MFG3
Vulnerability from github – Published: 2024-10-03 12:30 – Updated: 2025-07-10 23:19Schema parsing in the Java SDK of Apache Avro 1.11.3 and previous versions allows bad actors to execute arbitrary code. Users are recommended to upgrade to version 1.11.4 or 1.12.0, which fix this issue.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.apache.avro:avro"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.11.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-47561"
],
"database_specific": {
"cwe_ids": [
"CWE-502"
],
"github_reviewed": true,
"github_reviewed_at": "2024-10-03T16:52:52Z",
"nvd_published_at": "2024-10-03T11:15:13Z",
"severity": "CRITICAL"
},
"details": "Schema parsing in the Java SDK of Apache Avro 1.11.3 and previous versions allows bad actors to execute arbitrary code.\nUsers are recommended to upgrade to version 1.11.4\u00a0or 1.12.0, which fix this issue.",
"id": "GHSA-r7pg-v2c8-mfg3",
"modified": "2025-07-10T23:19:27Z",
"published": "2024-10-03T12:30:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47561"
},
{
"type": "WEB",
"url": "https://github.com/apache/avro/pull/2934"
},
{
"type": "WEB",
"url": "https://github.com/apache/avro/pull/2980"
},
{
"type": "WEB",
"url": "https://github.com/apache/avro/commit/8f89868d29272e3afea2ff8de8c85cb81a57d900"
},
{
"type": "WEB",
"url": "https://github.com/apache/avro/commit/f6b3bd7e50e6e09fedddb98c61558c022ba31285"
},
{
"type": "PACKAGE",
"url": "https://github.com/apache/avro"
},
{
"type": "WEB",
"url": "https://issues.apache.org/jira/browse/AVRO-3985"
},
{
"type": "WEB",
"url": "https://lists.apache.org/thread/c2v7mhqnmq0jmbwxqq3r5jbj1xg43h5x"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20241011-0003"
},
{
"type": "WEB",
"url": "https://thehackernews.com/2024/10/critical-apache-avro-sdk-flaw-allows.html"
},
{
"type": "WEB",
"url": "https://www.openwall.com/lists/oss-security/2024/10/03/1"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/10/03/1"
}
],
"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"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "Apache Avro Java SDK: Arbitrary Code Execution when reading Avro Data (Java SDK)"
}
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.