Buffer overrun from integer overflow in array modification

Buffer overrun from integer overflow in array modification

While modifying certain SQL array values, missing overflow checks let
authenticated database users write arbitrary bytes to a memory area that
facilitates arbitrary code execution. Missing overflow checks also let
authenticated database users read a wide area of server memory. The
CVE-2021-32027
fix covered some attacks of this description, but it missed others.

The PostgreSQL project thanks Pedro Gallegos for reporting this problem.

Version Information

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please visit the versioning page.

CVSS 3.0

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