QID 354412

Date Published: 2022-12-21

QID 354412: Amazon Linux Security Advisory for Hypertext Preprocessor (PHP) : ALAS2022-2022-073

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) a flaw was found in php.
The vulnerability occurs due to the malformed php_filter_float() function and leads to a use-after-free vulnerability.
This flaw allows an attacker to inject a malicious file, leading to a crash or a segmentation fault. (
( CVE-2021-21708)



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 Critical - 9.8 severity.
  • CVSS V2 rated as High - 6.8 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2022-2022-073 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354412

    CVE-2021-21707 | CVE-2021-21708 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2022-2022-073 amazon linux 2022 URL Logo alas.aws.amazon.com/AL2022/ALAS-2022-073.html
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].