In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when creating PHAR archive using PharData::buildFromIterator() function, the files are added with default permissions (0666, or all access) even if the original files on the filesystem were with more restrictive permissions. This may result in files having more lax permissions than intended when such archive is extracted.
https://bugs.php.net/bug.php?id=79082
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html
https://security.gentoo.org/glsa/202003-57
https://lists.debian.org/debian-lts-announce/2020/03/msg00034.html
https://usn.ubuntu.com/4330-1/
https://www.debian.org/security/2020/dsa-4717
Source: MITRE
Published: 2020-02-27
Updated: 2022-05-08
Type: CWE-281
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 5.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Impact Score: 1.4
Exploitability Score: 3.9
Severity: MEDIUM