FKIE_CVE-2021-38991
Vulnerability from fkie_nvd - Published: 2022-01-11 17:15 - Updated: 2026-06-17 04:02
Severity
Summary
IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953.
References
| URL | Tags | ||
|---|---|---|---|
| psirt@us.ibm.com | https://exchange.xforce.ibmcloud.com/vulnerabilities/212953 | VDB Entry, Vendor Advisory | |
| psirt@us.ibm.com | https://www.ibm.com/support/pages/node/6538952 | Patch, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://exchange.xforce.ibmcloud.com/vulnerabilities/212953 | VDB Entry, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.ibm.com/support/pages/node/6538952 | Patch, Vendor Advisory |
{
"affected": [
{
"affectedData": [
{
"product": "AIX",
"vendor": "IBM",
"versions": [
{
"status": "affected",
"version": "7.1"
},
{
"status": "affected",
"version": "7.2"
},
{
"status": "affected",
"version": "7.3"
}
]
},
{
"product": "VIOS",
"vendor": "IBM",
"versions": [
{
"status": "affected",
"version": "3.1"
}
]
}
],
"source": "psirt@us.ibm.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ibm:vios:3.1:*:*:*:*:*:*:*",
"matchCriteriaId": "6F61BE89-FBDE-4312-8422-86D1A9F57C9E",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:ibm:aix:7.0:*:*:*:*:*:*:*",
"matchCriteriaId": "CECB8485-AF0F-4193-A319-881351D7BFDA",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:ibm:aix:7.1:*:*:*:*:*:*:*",
"matchCriteriaId": "0402E20C-8B41-4A2A-BFF9-92EC843985F0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:ibm:aix:7.2:*:*:*:*:*:*:*",
"matchCriteriaId": "6791504A-A48A-4ED0-94AF-4C8A3B91516F",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "IBM AIX 7.0, 7.1, 7.2, and VIOS 3.1 could allow a non-privileged local user to exploit a vulnerability in the lscore command which could lead to code execution. IBM X-Force ID: 212953."
},
{
"lang": "es",
"value": "IBM AIX versiones 7.0, 7.1, 7.2 y VIOS versi\u00f3n 3.1, podr\u00edan permitir a un usuario local no privilegiado explotar una vulnerabilidad en el comando lscore que podr\u00eda conllevar a una ejecuci\u00f3n de c\u00f3digo. IBM X-Force ID: 212953"
}
],
"id": "CVE-2021-38991",
"lastModified": "2026-06-17T04:02:56.700",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.6,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"exploitabilityScore": 2.5,
"impactScore": 5.9,
"source": "psirt@us.ibm.com",
"type": "Secondary"
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2022-01-11T17:15:07.703",
"references": [
{
"source": "psirt@us.ibm.com",
"tags": [
"VDB Entry",
"Vendor Advisory"
],
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/212953"
},
{
"source": "psirt@us.ibm.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://www.ibm.com/support/pages/node/6538952"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"VDB Entry",
"Vendor Advisory"
],
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/212953"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://www.ibm.com/support/pages/node/6538952"
}
],
"sourceIdentifier": "psirt@us.ibm.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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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