CVE-2020-7063
Vulnerability Summary
Timeline
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.
CVSS Metrics
- v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:P/A:N
EPSS Trends
Current EPSS score: 0.30%• Percentile: 54%
Techniques & Countermeasures
- CWE-281•Improper Preservation of Permissions
The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.
Affected Systems
- debian•debian_linux
8.0 | 9.0 | 10.0
- opensuse•leap
15.1
- Unknown•PHP
≥ 7.3.x, < 7.3.15 | ≥ 7.4.x, < 7.4.3 | ≥ 7.2.x, < 7.2.28
- Unknown•PHP
≥ 7.2.0, ≤ 7.2.27 | ≥ 7.3.0, ≤ 7.3.14 | ≥ 7.4.0, ≤ 7.4.2
- tenable•tenable.sc
< 5.19.0
References (8)
- 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
- https://www.debian.org/security/2020/dsa-4719
- https://www.tenable.com/security/tns-2021-14