ID de Prueba:	1.3.6.1.4.1.25623.1.0.71112
Categoría:	Red Hat Local Security Checks
Título:	RedHat Security Advisory RHSA-2012:0309
Resumen:	NOSUMMARY
Descripción:	Description: The remote host is missing updates announced in advisory RHSA-2012:0309. The sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root. A flaw was found in the sudo password checking logic. In configurations where the sudoers settings allowed a user to run a command using sudo with only the group ID changed, sudo failed to prompt for the user's password before running the specified command with the elevated group privileges. (CVE-2011-0010) In addition, this update fixes the following bugs: * A NULL pointer dereference bug caused the sudo utility to terminate unexpectedly with a segmentation fault. This happened if the utility was run with the -g option and configured not to demand the password from the user who ran the sudo utility. With this update, the code has been modified and the problem no longer occurs. (BZ#673072) * The sudo utility failed to load sudoers from an LDAP (Lightweight Directory Access Protocol) server after the sudo tool was upgraded. This happened because the upgraded nsswitch.conf file did not contain the instruction to search for sudoers on the LDAP server. This update adds the lost instruction to /etc/nsswitch.conf and the system searches for sources of sudoers on the local file system and then on LDAP, if applicable. (BZ#617061) * The sudo tool interpreted a Runas alias specifying a group incorrectly as a user alias and the alias seemed to be ignored. With this update, the code for interpreting such aliases has been modified and the Runas group aliases are honored as expected. (BZ#627543) * Prior to this update, sudo did not parse comment characters (#) in the ldap.conf file correctly and could fail to work. With this update, parsing of the LDAP configuration file has been modified and the comment characters are parsed correctly. (BZ#750318) * The sudo utility formats its output to fit the width of the terminal window. However, this behavior is undesirable if the output is redirected through a pipeline. With this update, the output formatting is not applied in the scenario described. (BZ#697111) * Previously, the sudo utility performed Security-Enhanced Linux (SELinux) related initialization after switching to an unprivileged user. This prevented the correct setup of the SELinux environment before executing the specified command and could potentially cause an access denial. The bug has been fixed by backporting the SELinux related code and the execution model from a newer version of sudo. (BZ#477185) * On execv(3) function failure, the sudo tool executed an auditing call before reporting the failure. The call reset the error state and, consequently, the tool incorrectly reported that the command succeeded. With this update, the code has been modified and the problem no longer occurs. (BZ#673157) All users of sudo are advised to upgrade to this updated package, which resolves these issues. Solution: Please note that this update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date http://rhn.redhat.com/errata/RHSA-2012-0309.html Risk factor : Low
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2011-0010 42886 http://secunia.com/advisories/42886 42949 http://secunia.com/advisories/42949 42968 http://secunia.com/advisories/42968 43068 http://secunia.com/advisories/43068 43282 http://secunia.com/advisories/43282 45774 http://www.securityfocus.com/bid/45774 70400 http://www.osvdb.org/70400 ADV-2011-0089 http://www.vupen.com/english/advisories/2011/0089 ADV-2011-0182 http://www.vupen.com/english/advisories/2011/0182 ADV-2011-0195 http://www.vupen.com/english/advisories/2011/0195 ADV-2011-0199 http://www.vupen.com/english/advisories/2011/0199 ADV-2011-0212 http://www.vupen.com/english/advisories/2011/0212 ADV-2011-0362 http://www.vupen.com/english/advisories/2011/0362 FEDORA-2011-0455 http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053341.html FEDORA-2011-0470 http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053263.html GLSA-201203-06 http://security.gentoo.org/glsa/glsa-201203-06.xml MDVSA-2011:018 http://www.mandriva.com/security/advisories?name=MDVSA-2011:018 RHSA-2011:0599 http://www.redhat.com/support/errata/RHSA-2011-0599.html SSA:2011-041-05 http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.593654 SUSE-SR:2011:002 http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html USN-1046-1 http://www.ubuntu.com/usn/USN-1046-1 [oss-security] 20110111 CVE request: sudo does not ask for password on GID changes http://openwall.com/lists/oss-security/2011/01/11/3 [oss-security] 20110112 Re: CVE request: sudo does not ask for password on GID changes http://openwall.com/lists/oss-security/2011/01/12/1 http://openwall.com/lists/oss-security/2011/01/12/3 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=609641 http://www.sudo.ws/repos/sudo/rev/07d1b0ce530e http://www.sudo.ws/repos/sudo/rev/fe8a94f96542 http://www.sudo.ws/sudo/alerts/runas_group_pw.html https://bugzilla.redhat.com/show_bug.cgi?id=668879 sudo-groupid-privilege-escalation(64636) https://exchange.xforce.ibmcloud.com/vulnerabilities/64636
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