ubuntu-cve-2020-7065
Vulnerability from osv_ubuntu
Published
2020-04-01 04:15
Modified
2026-04-22 07:39
Summary
Details
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
8.8 (High)
7.4 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libapache2-mod-php7.4",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "libphp7.4-embed",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-bcmath",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-bz2",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-cgi",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-cli",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-common",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-curl",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-dba",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-enchant",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-fpm",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-gd",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-gmp",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-imap",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-interbase",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-intl",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-json",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-ldap",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-mbstring",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-mysql",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-odbc",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-opcache",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-pgsql",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-phpdbg",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-pspell",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-readline",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-snmp",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-soap",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-sqlite3",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-sybase",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-tidy",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-xml",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-xmlrpc",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-xsl",
"binary_version": "7.4.3-4ubuntu1.1"
},
{
"binary_name": "php7.4-zip",
"binary_version": "7.4.3-4ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "php7.4",
"purl": "pkg:deb/ubuntu/php7.4@7.4.3-4ubuntu1.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.4.3-4ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"7.4.3-4build1",
"7.4.3-4build2",
"7.4.3-4ubuntu1"
]
}
],
"aliases": [],
"details": "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.",
"id": "UBUNTU-CVE-2020-7065",
"modified": "2026-04-22T07:39:19Z",
"published": "2020-04-01T04:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-7065"
},
{
"type": "REPORT",
"url": "http://git.php.net/?p=php-src.git;a=commitdiff;h=69155120e68d2e614d5c300974a1a5610cfa2e8b;hp=e2b5f18896ca4169859c8ca058a9926aad6e3763"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4330-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4330-2"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-7065"
}
],
"related": [
"USN-4330-1",
"USN-4330-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2020-7065"
]
}
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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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