Issued:
2012-05-10
Updated:
2012-05-10

RHBA-2012:0565 - sudo bug fix update

Synopsis

sudo bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated sudo packages that fix two bugs are now available for Red Hat Enterprise Linux 6.

Description

The sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root.

This update fixes the following bugs:

  • A race condition in the signal handling code caused the sudo process to become unresponsive after receiving the SIGCHLD signal. This update modifies the signal handling to prevent the race condition, which ensures that the sudo process no longer hangs under these circumstances. (BZ#802440)

  • The "-l" option is used to list allowed and forbidden commands for the invoking user or for the user specified by the "-U" option. However, previously, the getgrouplist() function incorrectly checked the invoker's group membership instead of the membership of the specified user. Consequently, using the "sudo" command with both the "-l" and "-U" options listed privileges granted to any group the invoker was a member of. The getgrouplist() function has been fixed to properly check the group membership of the intended user rather than checking the invoker's membership. This ensures that the required output is listed when using the "-l" and "-U options. (BZ#811879)

All users of sudo are advised to upgrade to these updated packages, which fix these bugs.

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Storage2.0x86_64
Red Hat Storage for Public Cloud (via RHUI)2.0x86_64
Red Hat Gluster Storage Server for On-premise2.0x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.2ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.2s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - AUS6.2x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • sudo-debuginfo-1.7.4p5-9.el6_2.x86_64.rpm
  • sudo-1.7.4p5-9.el6_2.src.rpm
  • sudo-1.7.4p5-9.el6_2.x86_64.rpm
  • sudo-debuginfo-1.7.4p5-9.el6_2.ppc64.rpm
  • sudo-1.7.4p5-9.el6_2.s390x.rpm
  • sudo-1.7.4p5-9.el6_2.ppc64.rpm
  • sudo-debuginfo-1.7.4p5-9.el6_2.i686.rpm
  • sudo-1.7.4p5-9.el6_2.i686.rpm
  • sudo-debuginfo-1.7.4p5-9.el6_2.s390x.rpm

Fixes

CVEs

(none)

References

(none)

Additional information