CVE-2022-1212 (GCVE-0-2022-1212)
Vulnerability from cvelistv5 – Published: 2022-04-05 03:45 – Updated: 2024-08-02 23:55
VLAI
EPSS
VEX
Title
Use-After-Free in str_escape in mruby/mruby in mruby/mruby
Summary
Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.
Severity
9.3 (Critical)
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afd… | x_refsource_CONFIRM |
| https://github.com/mruby/mruby/commit/3cf291f7222… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| mruby | mruby/mruby |
Affected:
unspecified , < 3.2
(custom)
|
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T23:55:24.452Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abe"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "mruby/mruby",
"vendor": "mruby",
"versions": [
{
"lessThan": "3.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited."
}
],
"metrics": [
{
"cvssV3_0": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H",
"version": "3.0"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-416",
"description": "CWE-416 Use After Free",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-04-05T03:45:19.000Z",
"orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"shortName": "@huntrdev"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abe"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6"
}
],
"source": {
"advisory": "9fcc06d0-08e4-49c8-afda-2cae40946abe",
"discovery": "EXTERNAL"
},
"title": "Use-After-Free in str_escape in mruby/mruby in mruby/mruby",
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@huntr.dev",
"ID": "CVE-2022-1212",
"STATE": "PUBLIC",
"TITLE": "Use-After-Free in str_escape in mruby/mruby in mruby/mruby"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "mruby/mruby",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_value": "3.2"
}
]
}
}
]
},
"vendor_name": "mruby"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-416 Use After Free"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abe",
"refsource": "CONFIRM",
"url": "https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abe"
},
{
"name": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6",
"refsource": "MISC",
"url": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6"
}
]
},
"source": {
"advisory": "9fcc06d0-08e4-49c8-afda-2cae40946abe",
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
"assignerShortName": "@huntrdev",
"cveId": "CVE-2022-1212",
"datePublished": "2022-04-05T03:45:19.000Z",
"dateReserved": "2022-04-04T00:00:00.000Z",
"dateUpdated": "2024-08-02T23:55:24.452Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2022-1212",
"date": "2026-09-20",
"epss": "0.01794",
"percentile": "0.7743"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "mruby/mruby",
"vendor": "mruby",
"versions": [
{
"lessThan": "3.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
],
"source": "security@huntr.dev"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E65F5997-52F0-4937-AFA2-D56A5DACBD6C",
"versionEndIncluding": "3.0.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mruby:mruby:3.1.0:rc:*:*:*:*:*:*",
"matchCriteriaId": "2AD579DE-3A97-4AD5-B13C-C9D44331311F",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:mruby:mruby:3.1.0:rc2:*:*:*:*:*:*",
"matchCriteriaId": "E89212A2-5FED-4CEA-88A4-77611895FF17",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited."
},
{
"lang": "es",
"value": "Un Oso de Memoria previamente Liberada en la funci\u00f3n str_escape en mruby/mruby en el repositorio GitHub mruby/mruby versiones anteriores a 3.2. Una posible ejecuci\u00f3n de c\u00f3digo arbitrario si es explotado"
}
],
"id": "CVE-2022-1212",
"lastModified": "2026-06-17T04:22:01.420",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 4.7,
"source": "security@huntr.dev",
"type": "Secondary"
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2022-04-05T04:15:08.770",
"references": [
{
"source": "security@huntr.dev",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6"
},
{
"source": "security@huntr.dev",
"tags": [
"Exploit",
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"url": "https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abe"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Issue Tracking",
"Patch",
"Third Party Advisory"
],
"url": "https://huntr.dev/bounties/9fcc06d0-08e4-49c8-afda-2cae40946abe"
}
],
"sourceIdentifier": "security@huntr.dev",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "security@huntr.dev",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-03-27T13:04:43+00:00",
"cve": "CVE-2022-1212",
"id": "CVE-2022-1212",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Use-After-Free in str_escape in mruby/mruby in mruby/mruby",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-1212.json",
"version": "3"
}
}
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…