An issue in the fetch_step function in Percona Server for MySQL v8.0.28-19 allows attackers to cause a Denial of Service (DoS) via a SQL query.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
Link | Tags |
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https://jira.percona.com/browse/PS-8294 | issue tracking exploit third party advisory |