Multiple integer overflows in the rb_str_buf_append function in Ruby 1.8.4 and earlier 1.8.5 before 1.8.5-p231 1.8.6 before 1.8.6-p230 1.8.7 before 1.8.7-p22 and 1.9.0 before 1.9.0-2 allow context-dependent attackers to execute arbitrary code or cause a denial of service via unknown vectors that trigger memory corruption a different issue than CVE-2008-2663 CVE-2008-2664 and CVE-2008-2725. NOTE: as of 20080624 there has been inconsistent usage of multiple CVE identifiers related to Ruby. This CVE description should be regarded as authoritative although it is likely to change.