QID 356083

QID 356083: Amazon Linux Security Advisory for Hypertext Preprocessor (PHP) : ALASPHP8.0-2023-001

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. (
( CVE-2021-21707)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Please refer to Amazon advisory: ALASPHP8.0-2023-001 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 356083

    CVE-2021-21707 |
    Software Advisories
    Advisory ID Software Component Link
    ALASPHP8.0-2023-001 amazon linux 2 URL Logo alas.aws.amazon.com/AL2/ALASPHP8.0-2023-001.html
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