CVE-2021-21708
8.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| PHP Group | PHP | 7.4.x < 7.4.28 | affected |
| PHP Group | PHP | 8.0.X < 8.0.16 | affected |
| PHP Group | PHP | 8.1.X < 8.1.3 | affected |
Weaknesses
- CWE-416: CWE-416 Use After Free
ADP Enrichment
CVE Program Container
Additional References
- https://bugs.php.net/bug.php?id=81708
- https://security.netapp.com/advisory/ntap-20220325-0004/
- https://security.gentoo.org/glsa/202209-20
References
- https://bugs.php.net/bug.php?id=81708
- https://security.netapp.com/advisory/ntap-20220325-0004/
- https://security.gentoo.org/glsa/202209-20
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