glibc 2.1.9x and earlier does not properly clear the RESOLV_HOST_CONF, HOSTALIASES, or RES_OPTIONS environmental variables when executing setuid/setgid programs, which could allow local users to read arbitrary files.Referenceshttps://exchange.xforce.ibmcloud.com/vulnerabilities/5907http://www.redhat.com/support/errata/RHSA-2001-001.htmlhttp://archives.neohapsis.com/archives/bugtraq/2001-01/0186.htmlhttp://archives.neohapsis.com/archives/bugtraq/2001-01/0131.htmlhttp://www.securityfocus.com/bid/2181
