IIBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5 could allow an authenticated user with CONNECT privileges to cause a denial of service using a specially crafted query. IBM X-Force ID: 270264.

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5 is vulnerable to an insecure cryptographic algorithm and to information disclosure in stack trace under exceptional conditions. IBM X-Force ID: 270730.

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 under certain circumstances could allow an authenticated user to the database to cause a denial of service when a statement is run on columnar tables. IBM X-Force ID: 273393.

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5 federated server is vulnerable to a denial of service when a specially crafted cursor is used. IBM X-Force ID: 268759.

IBM DB2 for Linux, UNIX and Windows (includes Db2 Connect Server) 10.5, 11.1, and 11.5 is vulnerable to denial of service with a specially crafted RUNSTATS command on an 8TB table. IBM X-Force ID: 264809.

Directory traversal vulnerability in the UTL_FILE module in IBM DB2 and DB2 Connect 10.1 before FP1 on Windows allows remote authenticated users to modify, delete, or read arbitrary files via a pathname in the file field.

Unspecified vulnerability in IBM DB2 9.7 before FP5 on UNIX, when the Self Tuning Memory Manager (STMM) feature and the AUTOMATIC DATABASE_MEMORY setting are configured, allows local users to cause a denial of service (daemon crash) via unknown vectors.

Multiple buffer overflows in the DB2 JDBC Applet Server (DB2JDS) service in IBM DB2 9.x and earlier allow remote attackers to (1) execute arbitrary code via a crafted packet to the DB2JDS service on tcp/6789; and cause a denial of service via (2) an invalid LANG parameter or (2) a long packet that generates a "MemTree overflow."

IBM DB2 8.x before 8.1 FixPak 15 and 9.1 before Fix Pack 2 does not properly terminate certain input strings, which allows local users to execute arbitrary code via unspecified environment variables that trigger a heap-based buffer overflow.

Stack-based buffer overflow in IBM DB2 8.x before 8.1 FixPak 15 and 9.1 before Fix Pack 2 allows local users to execute arbitrary code via a long string in unspecified environment variables.

The (1) to_char and (2) to_date function in IBM DB2 8.1 allows local users to cause a denial of service (application crash) via an empty string in the second parameter, which causes a null pointer dereference.

Stack-based buffer overflows in the (1) xmlvarcharfromfile, (2) xmlclobfromfile, (3) xmlfilefromvarchar, and (4) xmlfilefromclob function calls in IBM DB2 8.1 allow remote attackers to execute arbitrary code via a 94-byte second argument, which causes the return address to be overwritten with a pointer to the argument.

Certain XML functions in IBM DB2 8.1 run with the privileges of DB2 instead of the logged-in user, which allows remote attackers to create or overwrite files via (1) XMLFileFromVarchar or (2) XMLFileFromClob, or read files via (3) XMLVarcharFromFile or (4) XMLClobFromFile.