Why does sudo crashes with "sudo[ ]: segfault at 8 ip 00007fc7ebf23db2 sp 00007fffbcc0d290 error 4 in sudoers.so" in Red Hat Enterprise Linux 6?

Solution Verified - Updated -

Issue

  • While running the sudo command with the -g command, it exits with a segmentation fault on Red Hat Enterprise Linux (RHEL)6.5 and Red Hat Enterprise Linux (RHEL)6.7

  • Segmentation fault seen with this command:

# sudo -u xsrun -g xsight /bin/ls /
  • Issue is not observed if -g xsight option is not used.

Environment

  • Red Hat Enterprise Linux 6.7
  • sudo-1.8.6p3-15.el6.x86_64
  • Following commands were executed to set up a users:
# /usr/sbin/groupadd --gid 1000 xsight
# /usr/sbin/useradd --home /home/xsight --comment "xSIGHT user" --gid 1000 -m --password '$1$434343$343234.' --shell /bin/bash --uid 1000 xsight
# /usr/sbin/useradd --home /home/xsrun --comment "xSIGHT xsrun user" --gid 1000 -m --password '*' --shell /sbin/nologin --uid 1002 xsrun
# sed -i "s/xsight:x:1000:$/xsight:x:1000:xsight,xsrun/" /etc/group
  • The /etc/sudoers.d/01-xps file contents:
%xsight ALL = (xsrun:xsight) NOPASSWD: ALL

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