CVE-2020-7065 (GCVE-0-2020-7065)
Vulnerability from cvelistv5 – Published: 2020-04-01 03:35 – Updated: 2024-09-17 04:25
VLAI
EPSS
VEX
Title
mb_strtolower (UTF-32LE): stack-buffer-overflow at php_unicode_tolower_full
Summary
In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.
Severity
7.4 (High)
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/4330-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://usn.ubuntu.com/4330-2/ | vendor-advisoryx_refsource_UBUNTU |
| https://www.debian.org/security/2020/dsa-4719 | vendor-advisoryx_refsource_DEBIAN |
| https://security.netapp.com/advisory/ntap-2020040… | x_refsource_CONFIRM |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://bugs.php.net/bug.php?id=79371 | x_refsource_MISC |
| https://www.php.net/ChangeLog-7.php#7.4.4 | x_refsource_CONFIRM |
| https://www.tenable.com/security/tns-2021-14 | x_refsource_CONFIRM |
Impacted products
Date Public
2020-03-17 00:00
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c\u00f3digo.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@php.net\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":5.2},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"security@php.net\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-121\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:php:php:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.3.0\",\"versionEndExcluding\":\"7.3.16\",\"matchCriteriaId\":\"ECF918F4-EEAF-4F96-A49A-D367D549C52B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:php:php:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"7.4.0\",\"versionEndExcluding\":\"7.4.4\",\"matchCriteriaId\":\"F809DF30-2CCC-4E3D-819B-75E5E0827E45\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"8D305F7A-D159-4716-AB26-5E38BB5CD991\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"815D70A8-47D3-459C-A32C-9FEACA0659D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A31C8344-3E02-4EB8-8BD8-4C84B7959624\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"902B8056-9E37-443B-8905-8AA93E2447FB\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:tenable:tenable.sc:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.19.0\",\"matchCriteriaId\":\"41DBA7C7-8084-45F6-B59D-13A9022C34DF\"}]}]}],\"references\":[{\"url\":\"https://bugs.php.net/bug.php?id=79371\",\"source\":\"security@php.net\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200403-0001/\",\"source\":\"security@php.net\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4330-1/\",\"source\":\"security@php.net\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4330-2/\",\"source\":\"security@php.net\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4719\",\"source\":\"security@php.net\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2021.html\",\"source\":\"security@php.net\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.php.net/ChangeLog-7.php#7.4.4\",\"source\":\"security@php.net\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://www.tenable.com/security/tns-2021-14\",\"source\":\"security@php.net\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugs.php.net/bug.php?id=79371\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Issue Tracking\",\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200403-0001/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4330-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4330-2/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4719\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.php.net/ChangeLog-7.php#7.4.4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://www.tenable.com/security/tns-2021-14\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T07:39:47+00:00",
"cve": "CVE-2020-7065",
"id": "CVE-2020-7065",
"initial_release_date": "2020-04-01T00:00:00+00:00",
"product_status:fixed": "605",
"product_status:known_not_affected": "133",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "php: Using mb_strtolower() function with UTF-32LE encoding leads to potential code execution",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-7065.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-31T02:28:28Z",
"cve": "CVE-2020-7065",
"id": "CVE-2020-7065",
"initial_release_date": "2023-02-15T04:01:54Z",
"product_status:known_not_affected": "3710",
"product_status:recommended": "37",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-7065",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-7065.json",
"version": "14"
}
}
}
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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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