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Description of problem:
Depending on the umask configuration of the target system, "sudo oscap"
may create the result files in temporary directory with 600 permissions,
which makes retrieving the log (as the regular user that ssh'ed to the
system) impossible:
$ oscap-ssh --sudo user@system 22 xccdf eval ...
[...]
oscap exit code: 0
Copying back requested files...
scp: /tmp/tmp.0kfbPWEy6u/report.html: Permission denied
Failed to copy the HTML report back to local machine!
Version-Release number of selected component (if applicable):
All openscap packages, including Upstream
How reproducible:
Always
Steps to Reproduce:
1. Set a default umask in /etc/sudoers:
Defaults umask = 0077
2. Run oscap-ssh
$ oscap-ssh --sudo rmetrich@vm-rhel7 22 xccdf eval --rule xccdf_org.ssgproject.content_rule_ensure_gpgcheck_globally_activated --profile xccdf_org.ssgproject.content_profile_pci-dss --report report.html /usr/share/xml/scap/ssg/content/ssg-rhel7-ds.xml
Actual results:
Failure to retrieve the result
Expected results:
Result being retrieved.
Additional info:
Issue applies Upstream. See PR https://github.com/OpenSCAP/openscap/pull/1481
An even simple reproducer is to change the default umask in /etc/bashrc:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
if [ $UID -gt 199 ] && [ "`/usr/bin/id -gn`" = "`/usr/bin/id -un`" ]; then
umask 002
else
umask 022
fi
umask 027 <<<--- HERE for example
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (openscap bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:3914