CVE-2021-21708

Name
CVE-2021-21708
Description
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 FILTER_VALIDATE_FLOAT 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 FILTER_VALIDATE_FLOAT with min/max limits.
NVD Severity
high
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
Exploit https://bugs.php.net/bug.php?id=81708
Third Party Advisory https://security.netapp.com/advisory/ntap-20220325-0004/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* php >= 7.4.0 < 7.4.28
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* php >= 8.0.0 < 8.0.16
cpe:2.3:a:php:php:*:*:*:*:*:*:*:* php >= 8.1.0 < 8.1.3

Vulnerable and fixed packages

Source package Branch Version Maintainer Status