ghostscript before 5.10-16 uses an empty LD_RUN_PATH environmental variable to find libraries in the current directory, which could allow local users to execute commands as other users by placing a Trojan horse library into a directory from which another user executes ghostscript.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5564
http://www.securityfocus.com/bid/1991
http://www.linux-mandrake.com/en/security/MDKSA-2000-074.php3
http://www.debian.org/security/2000/20001123
http://www.calderasystems.com/support/security/advisories/CSSA-2000-041.0.txt
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000343