IBM DB2 for Linux, UNIX and Windows 9.2, 10.1, 10.5, and 11.1 (includes DB2 Connect Server) is vulnerable to a buffer overflow that could allow a local user to overwrite DB2 files or cause a denial of service. IBM X-Force ID: 120668.

A denial of service vulnerability exists when the Windows Tile Object Service improperly handles hard links, aka 'Windows Tile Object Service Denial of Service Vulnerability'.

A denial of service vulnerability exists when Windows improperly handles hard links, aka 'Microsoft Windows Denial of Service Vulnerability'.

An elevation of privilege vulnerability exists when the Windows User Profile Service (ProfSvc) improperly handles symlinks. An attacker who successfully exploited this vulnerability could delete files and folders in an elevated context. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and delete files or folders of their choosing. The security update addresses the vulnerability by correcting how the Windows User Profile Service handles symlinks.

IBM DB2 for Linux, UNIX and Windows 9.7, 10.1, 10.5, and 11.1 (includes DB2 Connect Server) contains a vulnerability that could allow a local user to overwrite arbitrary files owned by the DB2 instance owner. IBM X-Force ID: 140043.