CVE-2021-24307 (GCVE-0-2021-24307)
Vulnerability from cvelistv5 – Published: 2021-05-24 10:58 – Updated: 2024-08-03 19:28
VLAI
EPSS
VEX
Title
All in One SEO Pack < 4.1.0.2 - Admin RCE via unserialize
Summary
The All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with "aioseo_tools_settings" privilege (most of the time admin) to execute arbitrary code on the underlying host. Users can restore plugin's configuration by uploading a backup .ini file in the section "Tool > Import/Export". However, the plugin attempts to unserialize values of the .ini file. Moreover, the plugin embeds Monolog library which can be used to craft a gadget chain and thus trigger system command execution.
Severity
8.8 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://wpscan.com/vulnerability/ab2c94d2-f6c4-41… | x_refsource_CONFIRM |
| https://aioseo.com/changelog/ | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| All in One SEO Team | All in One SEO – Best WordPress SEO Plugin – Easily Improve Your SEO Rankings |
Affected:
4.1.0.2 , < 4.1.0.2
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T19:28:23.581Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://aioseo.com/changelog/"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "All in One SEO \u2013 Best WordPress SEO Plugin \u2013 Easily Improve Your SEO Rankings",
"vendor": "All in One SEO Team",
"versions": [
{
"lessThan": "4.1.0.2",
"status": "affected",
"version": "4.1.0.2",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Vincent MICHEL"
}
],
"descriptions": [
{
"lang": "en",
"value": "The All in One SEO \u2013 Best WordPress SEO Plugin \u2013 Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with \"aioseo_tools_settings\" privilege (most of the time admin) to execute arbitrary code on the underlying host. Users can restore plugin\u0027s configuration by uploading a backup .ini file in the section \"Tool \u003e Import/Export\". However, the plugin attempts to unserialize values of the .ini file. Moreover, the plugin embeds Monolog library which can be used to craft a gadget chain and thus trigger system command execution."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-502",
"description": "CWE-502 Deserialization of Untrusted Data",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2021-05-24T10:58:05.000Z",
"orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"shortName": "WPScan"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://aioseo.com/changelog/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "All in One SEO Pack \u003c 4.1.0.2 - Admin RCE via unserialize",
"x_generator": "WPScan CVE Generator",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "contact@wpscan.com",
"ID": "CVE-2021-24307",
"STATE": "PUBLIC",
"TITLE": "All in One SEO Pack \u003c 4.1.0.2 - Admin RCE via unserialize"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "All in One SEO \u2013 Best WordPress SEO Plugin \u2013 Easily Improve Your SEO Rankings",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "4.1.0.2",
"version_value": "4.1.0.2"
}
]
}
}
]
},
"vendor_name": "All in One SEO Team"
}
]
}
},
"credit": [
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"lang": "eng",
"value": "Vincent MICHEL"
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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}
]
},
"generator": "WPScan CVE Generator",
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-502 Deserialization of Untrusted Data"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1",
"refsource": "CONFIRM",
"url": "https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1"
},
{
"name": "https://aioseo.com/changelog/",
"refsource": "MISC",
"url": "https://aioseo.com/changelog/"
}
]
},
"source": {
"discovery": "UNKNOWN"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
"assignerShortName": "WPScan",
"cveId": "CVE-2021-24307",
"datePublished": "2021-05-24T10:58:05.000Z",
"dateReserved": "2021-01-14T00:00:00.000Z",
"dateUpdated": "2024-08-03T19:28:23.581Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-24307",
"date": "2026-09-25",
"epss": "0.53274",
"percentile": "0.98948"
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:aioseo:all_in_one_seo:*:*:*:*:*:wordpress:*:*",
"matchCriteriaId": "23F0DE8A-3D20-47E8-A04E-176CB617E919",
"versionEndExcluding": "4.1.0.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The All in One SEO \u2013 Best WordPress SEO Plugin \u2013 Easily Improve Your SEO Rankings before 4.1.0.2 enables authenticated users with \"aioseo_tools_settings\" privilege (most of the time admin) to execute arbitrary code on the underlying host. Users can restore plugin\u0027s configuration by uploading a backup .ini file in the section \"Tool \u003e Import/Export\". However, the plugin attempts to unserialize values of the .ini file. Moreover, the plugin embeds Monolog library which can be used to craft a gadget chain and thus trigger system command execution."
},
{
"lang": "es",
"value": "All in One SEO \u2013 Best WordPress SEO Plugin \u2013 Easily Improve Your SEO Rankings versiones anteriores a 4.1.0.2 permite a usuarios autenticados con el privilegio \"aioseo_tools_settings\" (la mayor\u00eda de las veces administrador) ejecutar c\u00f3digo arbitrario en el host subyacente.\u0026#xa0;Los usuarios pueden restaurar la configuraci\u00f3n del plugin al cargar un archivo .ini de respaldo en la secci\u00f3n \"Tool ) Import/Export\".\u0026#xa0;Sin embargo, el plugin intenta anular la serializaci\u00f3n de los valores del archivo .ini.\u0026#xa0;Adem\u00e1s, el plugin incorpora la biblioteca Monolog que puede ser usada para dise\u00f1ar una cadena de dispositivos y, por lo tanto, desencadenar una ejecuci\u00f3n de comandos del sistema"
}
],
"id": "CVE-2021-24307",
"lastModified": "2024-11-21T05:52:48.583",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "COMPLETE",
"baseScore": 9.0,
"confidentialityImpact": "COMPLETE",
"integrityImpact": "COMPLETE",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 10.0,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-05-24T11:15:08.350",
"references": [
{
"source": "contact@wpscan.com",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://aioseo.com/changelog/"
},
{
"source": "contact@wpscan.com",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"Vendor Advisory"
],
"url": "https://aioseo.com/changelog/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
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"Third Party Advisory"
],
"url": "https://wpscan.com/vulnerability/ab2c94d2-f6c4-418b-bd14-711ed164bcf1"
}
],
"sourceIdentifier": "contact@wpscan.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-502"
}
],
"source": "contact@wpscan.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-502"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T14:42:20+00:00",
"cve": "CVE-2021-24307",
"id": "CVE-2021-24307",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "All in One SEO Pack \u003c 4.1.0.2 - Admin RCE via unserialize",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-24307.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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