CVE-2021-21708
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-21708
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21708.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-21708
- Aliases
- Related
- Published
- 2022-02-27T08:15:06Z
- Modified
- 2024-09-18T03:15:16.175675Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTERVALIDATEFLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTERVALIDATEFLOAT with min/max limits.
- References
Affected packages
Debian:11 / php7.4
Package
- Name
- php7.4
- Purl
- pkg:deb/debian/php7.4?arch=source