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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.
Metrics
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displayed.
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OR
*cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
*cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Changed
CPE Configuration
OR
*cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 7.3.0 up to (excluding) 7.3.16
*cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (excluding) 7.4.34
OR
*cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 7.3.0 up to (excluding) 7.3.16
*cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (excluding) 7.4.4
Changed
Reference Type
https://security.netapp.com/advisory/ntap-20200403-0001/ No Types Assigned
https://security.netapp.com/advisory/ntap-20200403-0001/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/4330-1/ No Types Assigned
https://usn.ubuntu.com/4330-1/ Third Party Advisory
Changed
Reference Type
https://usn.ubuntu.com/4330-2/ No Types Assigned
https://usn.ubuntu.com/4330-2/ Third Party Advisory
Changed
Reference Type
https://www.debian.org/security/2020/dsa-4719 No Types Assigned
https://www.debian.org/security/2020/dsa-4719 Third Party Advisory
Changed
Reference Type
https://www.php.net/ChangeLog-7.php#7.4.4 No Types Assigned
In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.34, 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.
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.
OR
*cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 7.3.0 up to (excluding) 7.3.16
*cpe:2.3:a:php:php:*:*:*:*:*:*:*:* versions from (including) 7.4.0 up to (excluding) 7.4.34
Added
CVSS V2
NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Added
CVSS V2 Metadata
Victim must voluntarily interact with attack mechanism
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Added
CWE
NIST CWE-787
Changed
Reference Type
https://bugs.php.net/bug.php?id=79371 No Types Assigned
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