abrt-dbus in Automatic Bug Reporting Tool (ABRT) allows local users to delete or change the ownership of arbitrary files via the problem directory argument to the (1) ChownProblemDir, (2) DeleteElement, or (3) DeleteProblem method.
https://github.com/abrt/libreport/commit/1951e7282043dfe1268d492aea056b554baedb75
https://github.com/abrt/abrt/commit/b7f8bd20b7fb5b72f003ae3fa647c1d75f4218b7
https://github.com/abrt/abrt/commit/7814554e0827ece778ca88fd90832bd4d05520b1
https://github.com/abrt/abrt/commit/6e811d78e2719988ae291181f5b133af32ce62d8