The sudo (superuser do) utility allows system administrators to givecertain users the ability to run commands as root.The RHBA-2010:0212 sudo update released as part of Red Hat Enterprise Linux5.5 added the ability to change the value of the ignore_dot option in the"/etc/sudoers" configuration file. This ability introduced a regression inthe upstream fix for CVE-2010-0426. In configurations where the ignore_dotoption was set to off (the default is on for the Red Hat Enterprise Linux 5sudo package), a local user authorized to use the sudoedit pseudo-commandcould possibly run arbitrary commands with the privileges of the userssudoedit was authorized to run as. (CVE-2010-1163)Red Hat would like to thank Todd C. Miller, the upstream sudo maintainer,for responsibly reporting this issue. Upstream acknowledges ValerioCostamagna as the original reporter.Users of sudo should upgrade to this updated package, which contains abackported patch to correct this issue.