Buffer overflow in various ha commands of VERITAS Cluster Server for UNIX before 4.0MP2 allows local users to execute arbitrary code via a long VCSI18N_LANG environment variable to (1) haagent, (2) haalert, (3) haattr, (4) hacli, (5) hacli_runcmd, (6) haclus, (7) haconf, (8) hadebug, (9) hagrp, (10) hahb, (11) halog, (12) hareg, (13) hares, (14) hastatus, (15) hasys, (16) hatype, (17) hauser, and (18) tststew.