Multiple unspecified vulnerabilities in Ruby before 1.8.5 allow remote attackers to bypass "safe level" checks via unspecified vectors involving (1) the alias function and (2) "directory operations".
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9983
https://exchange.xforce.ibmcloud.com/vulnerabilities/27725
http://www.vupen.com/english/advisories/2006/2760
http://www.ubuntu.com/usn/usn-325-1
http://www.securityfocus.com/bid/18944
http://www.redhat.com/support/errata/RHSA-2006-0604.html
http://www.novell.com/linux/security/advisories/2006_21_sr.html
http://www.mandriva.com/security/advisories?name=MDKSA-2006:134
http://www.debian.org/security/2006/dsa-1157
http://www.debian.org/security/2006/dsa-1139
http://secunia.com/advisories/21749
http://secunia.com/advisories/21657
http://secunia.com/advisories/21598
http://secunia.com/advisories/21337
http://secunia.com/advisories/21272
http://secunia.com/advisories/21236
http://secunia.com/advisories/21233
http://secunia.com/advisories/21009
http://lists.freebsd.org/pipermail/freebsd-security/2006-July/003915.html
http://lists.freebsd.org/pipermail/freebsd-security/2006-July/003907.html