CVE-2011-1784 Information

Description

The pidfile_write function in core/pidfile.c in keepalived 1.2.2 and earlier uses 0666 permissions for the (1) keepalived.pid (2) checkers.pid and (3) vrrp.pid files in /var/run/ which allows local users to kill arbitrary processes by writing a PID to one of these files.

Reference

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=626281 http://lists.debian.org/debian-security/2011/05/msg00012.html http://lists.debian.org/debian-security/2011/05/msg00013.html http://lists.debian.org/debian-security/2011/05/msg00018.html http://openwall.com/lists/oss-security/2011/05/10/5 http://openwall.com/lists/oss-security/2011/05/16/7 http://secunia.com/advisories/44460 http://www.osvdb.org/72380 http://www.securityfocus.com/bid/47859 https://bugzilla.redhat.com/show_bug.cgi?id=704039 https://exchange.xforce.ibmcloud.com/vulnerabilities/67477