gsd-2021-21708
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-21708",
"description": "In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.",
"id": "GSD-2021-21708",
"references": [
"https://www.suse.com/security/cve/CVE-2021-21708.html",
"https://www.debian.org/security/2022/dsa-5082",
"https://ubuntu.com/security/CVE-2021-21708",
"https://security.archlinux.org/CVE-2021-21708",
"https://access.redhat.com/errata/RHSA-2022:7624",
"https://access.redhat.com/errata/RHSA-2022:7628",
"https://access.redhat.com/errata/RHSA-2022:8197"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.",
"id": "GSD-2021-21708",
"modified": "2023-12-13T01:23:10.741762Z",
"schema_version": "1.4.0"
}
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"DATE_PUBLIC": "2022-02-14T08:00:00.000Z",
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"TITLE": "UAF due to php_filter_float() failing"
},
"affects": {
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}
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{
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"source": {
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"nvd.nist.gov": {
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"impact": {
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"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
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"exploitabilityScore": 8.6,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
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"exploitabilityScore": 3.9,
"impactScore": 5.9
}
},
"lastModifiedDate": "2022-10-07T14:31Z",
"publishedDate": "2022-02-27T08:15Z"
}
}
}
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