Description of problem:
When scanning system with invalid host name, openscap crashes.


Version-Release number of selected component (if applicable):
openscap-1.2.14-2.el7


How reproducible:
always


Steps to Reproduce:
# sysctl kernel.hostname=test_test
# cd tests/API/XCCDF/applicability
# make check
# grep -i "openscap error" -A15 test_api_xccdf_applicability.log
OpenSCAP Error: File '/tmp/test_remediate_fix_processing_ds.arf.52XmYH' line 0: Element '{http://scap.nist.gov/schema/asset-identification/1.1}hostname': [facet 'pattern'] The value 'test_test' is not accepted by the pattern '[\w\-]+(\.[\w\-]+){0,}'.
 [xccdf_session.c:587]
File '/tmp/test_remediate_fix_processing_ds.arf.52XmYH' line 0: Element '{http://scap.nist.gov/schema/asset-identification/1.1}hostname': 'test_test' is not a valid value of the atomic type '{http://scap.nist.gov/schema/asset-identification/1.1}hostname-type'.
 [xccdf_session.c:587]
Invalid ARF Result Datastream (1.1) content in /tmp/test_remediate_fix_processing_ds.arf.52XmYH. [oscap_source.c:342]
D: lt-probe_system_info: Received signal 15 from 30428 (parent) [lt-probe_system_info(30466):signal_handler(7fc12d3e1700):signal_handler.c:100:probe_signal_handler]
D: lt-probe_file: Received signal 15 from 30428 (parent) [lt-probe_file(30486):signal_handler(7ff224917700):signal_handler.c:100:probe_signal_handler]
./test_remediate_fix_processing_ds.sh: line 23: 30428 Segmentation fault      $OSCAP xccdf eval --verbose DEVEL --remediate --results $resultx --results-arf $arf $sds

Note: I removed redirection of stderr to a separate file in test_remediate_fix_processing_ds.sh file.