Use After Free Affecting php7-sysvshm package, versions <7.4.33-150400.4.13.1
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Test your applications- Snyk ID SNYK-SLES154-PHP7SYSVSHM-3123694
- published 17 Nov 2022
- disclosed 15 Nov 2022
Introduced: 15 Nov 2022
CVE-2021-21708 Open this link in a new tabHow to fix?
Upgrade SLES:15.4 php7-sysvshm to version 7.4.33-150400.4.13.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream php7-sysvshm package and not the php7-sysvshm package as distributed by SLES.
See How to fix? for SLES:15.4 relevant fixed versions and status.
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.