IM-Switch Insecure Temporary File Handling Symbolic Link Vulnerability. CVE-2004-2502. Local exploit for linux platform
source: http://www.securityfocus.com/bid/10717/info IM-Switch Insecure Temporary File Handling Symbolic Link VulnerabilityIt is reported that im-switch is prone to a local insecure temporary file handling symbolic link vulnerability. This issue is due to a design error that allows the application to insecurely write to a temporary file that is created with a predictable file name. The im-switch utility will write to this temporary file before verifying its existence; this would facilitate a symbolic link attack. An attacker may exploit this issue to corrupt arbitrary files. This corruption may potentially result in the elevation of privileges, or in a system wide denial of service. $ bash -c 'i=1;while [ $i -lt 65536 ]; do ln -s /etc/IMPORTANT_FILE /tmp/imswitcher$i; let "i++"; done'