do_command.c in Vixie cron (vixie-cron) 4.1 does not check the return code of a setuid call, which might allow local users to gain root privileges if setuid fails in cases such as PAM failures or resource limits, as originally demonstrated by a program that exceeds the process limits as defined in /etc/security/limits.conf.
bugs.gentoo.org/show_bug.cgi?id=134194
secunia.com/advisories/20380
secunia.com/advisories/20388
secunia.com/advisories/20616
secunia.com/advisories/21032
secunia.com/advisories/21702
secunia.com/advisories/35318
security.gentoo.org/glsa/glsa-200606-07.xml
securitytracker.com/id?1016480
support.avaya.com/elmodocs2/security/ASA-2006-168.htm
www.novell.com/linux/security/advisories/2006-05-32.html
www.redhat.com/support/errata/RHSA-2006-0539.html
www.securityfocus.com/archive/1/435033/100/0/threaded
www.securityfocus.com/bid/18108
www.vupen.com/english/advisories/2006/2075
bugzilla.redhat.com/bugzilla/show_bug.cgi?id=178431
exchange.xforce.ibmcloud.com/vulnerabilities/26691
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10213
usn.ubuntu.com/778-1/