What’s Vulnerable › Vulnerabilities
CVE-2020-7063: Files added to tar with Phar::buildFromIterator have all-access permissions
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.6% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2020-02-27 · updated 2026-06-17
- Weakness: CWE-281
Description
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.
Affected products
- Debian Linux: 8.0, 9.0, 10.0
- openSUSE Leap: 15.1
- PHP: from 7.2.0 through 7.2.27; from 7.3.0 through 7.3.14; from 7.4.0 through 7.4.2
- Tenable.sc: before 5.19.0 — fixed in 5.19.0
How to fix
Upgrade to a fixed version: Tenable.sc 5.19.0. Check the vendor advisory for mitigations.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html
- https://bugs.php.net/bug.php?id=79082
- https://lists.debian.org/debian-lts-announce/2020/03/msg00034.html
- https://security.gentoo.org/glsa/202003-57
- https://usn.ubuntu.com/4330-1/
- https://www.debian.org/security/2020/dsa-4717
- https://www.debian.org/security/2020/dsa-4719
- https://www.tenable.com/security/tns-2021-14
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00023.html
- https://bugs.php.net/bug.php?id=79082
- https://lists.debian.org/debian-lts-announce/2020/03/msg00034.html
- https://security.gentoo.org/glsa/202003-57
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