CVE-2021-21707
Public on 2021-11-29
Modified on 2024-01-30
Description
A flaw was found in php. The main cause of this vulnerability is improper input validation while parsing an Extensible Markup Language(XML) entity. A special character could allow an attacker to traverse directories. The highest threat from this vulnerability is confidentiality.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Php8.0 Extra | php | 2023-08-04 | ALAS2PHP8.0-2023-001 | Fixed |
| Amazon Linux 1 | php56 | No Fix Planned | ||
| Amazon Linux 2023 | php8.1 | Not Affected | ||
| Amazon Linux 2023 | php8.2 | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD | CVSSv2 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| NVD | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |