PingCAP TiDB

Use of Externally-Controlled Format String in pingcap/tidb

PingCAP TiDB v8.1.0 was discovered to contain a buffer overflow via the component expression.ExplainExpressionList. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input. NOTE: PingCAP maintains that the actual reproduction of this issue did not cause the security impact of service interruption to other users. They argue that this is a complex query bug and not a DoS vulnerability.

TiDB authentication bypass vulnerability

PingCAP TiDB v6.1.0 was discovered to contain a NULL pointer dereference.

PingCAP TiDB v7.5.1 was discovered to contain a NULL pointer dereference via the component SortedRowContainer.

PingCAP TiDB v7.5.1 was discovered to contain a buffer overflow vulnerability, which could lead to database crashes and denial of service attacks.

PingCAP TiDB v8.1.0 was discovered to contain a buffer overflow via the component (*Column).GetDecimal. This allows attackers to cause a Denial of Service (DoS) via a crafted input to the 'RemoveUnnecessaryFirstRow', it will check the expression between 'Agg' and 'GroupBy', but does not check the return type. NOTE: PingCAP disputes this, arguing that reproduction did not cause the security impact of service interruption to other users. They maintain it is a complex query bug in the product but not a DoS.