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Bug 1792340 - Unable to build disk images when FIPS is enabled on the build system
Summary: Unable to build disk images when FIPS is enabled on the build system
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: python-blivet
Version: 8.1
Hardware: All
OS: Linux
high
high
Target Milestone: rc
: 8.0
Assignee: Vojtech Trefny
QA Contact: Release Test Team
URL:
Whiteboard:
: 1837853 (view as bug list)
Depends On:
Blocks: 1812825 1812830
TreeView+ depends on / blocked
 
Reported: 2020-01-17 14:28 UTC by Renaud Métrich
Modified: 2023-10-06 19:02 UTC (History)
3 users (show)

Fixed In Version: python-blivet-3.2.2-1.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 03:22:23 UTC
Type: Bug
Target Upstream Version:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 4740971 0 None None None 2020-01-17 14:59:45 UTC

Description Renaud Métrich 2020-01-17 14:28:09 UTC 
Description of problem:

When executing lorax-composer on a FIPS system to build a disk image, the tool fails when python3-blivet's md5_file() function is called:

-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
File "/usr/lib/python3.6/site-packages/blivet/mounts.py", line 109, in get_mountpoints
  self._cache_check()
File "/usr/lib/python3.6/site-packages/blivet/mounts.py", line 171, in _cache_check
  md5hash = util.md5_file("/proc/mounts")
File "/usr/lib/python3.6/site-packages/blivet/util.py", line 574, in md5_file
  md5 = hashlib.md5()
ValueError: [digital envelope routines: EVP_DigestInit_ex] disabled for FIPS
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------

This is due to MD5 being completely disabled in libcrypto library when FIPS is enabled.

Example with FIPS enabled:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
$ python3
...
>>> import hashlib
>>> hashlib.md5()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: [digital envelope routines: EVP_DigestInit_ex] disabled for FIPS
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------


Internally, blivet should use a supported hash algorithm whatever FIPS mode is, e.g. "sha1".


Version-Release number of selected component (if applicable):

python3-blivet-3.1.0-17.el8.noarch


How reproducible:

Always
Comment 1 Vojtech Trefny 2020-01-17 15:35:12 UTC 
upstream PR: https://github.com/storaged-project/blivet/pull/825
Comment 4 Peter Kotvan 2020-04-20 09:17:06 UTC 
Providing qe_ack.

Reproducer without installing and using lorax-composer:
1. Install RHEL-8 with in fips mode (fips=1 on kernel command line).
2. Download and extract blivet sources (https://github.com/storaged-project/blivet/archive/blivet-3.1.0.tar.gz).
3. Run:
$ sudo python3 tests/run_tests.py formats_test.fs_test.Ext2FSTestCase.test_mountpoint
test_mountpoint (formats_test.fs_test.Ext2FSTestCase) ... ERROR

======================================================================
ERROR: test_mountpoint (formats_test.fs_test.Ext2FSTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/root/blivet/tests/formats_test/fstesting.py", line 181, in test_mountpoint
    an_fs.mount(mountpoint=mountpoint)
  File "/root/blivet/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/root/blivet/blivet/formats/fs.py", line 765, in mount
    return self.setup(**kwargs)
  File "/root/blivet/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/root/blivet/blivet/formats/__init__.py", line 602, in setup
    type=self.type, status=self.status)
  File "/root/blivet/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/root/blivet/blivet/formats/fs.py", line 783, in status
    return self.system_mountpoint is not None
  File "/root/blivet/blivet/threads.py", line 53, in run_with_lock
    return m(*args, **kwargs)
  File "/root/blivet/blivet/formats/fs.py", line 487, in system_mountpoint
    getattr(self, "subvolspec", None))[-1]
  File "/root/blivet/blivet/mounts.py", line 109, in get_mountpoints
    self._cache_check()
  File "/root/blivet/blivet/mounts.py", line 171, in _cache_check
    md5hash = util.md5_file("/proc/mounts")
  File "/root/blivet/blivet/util.py", line 567, in md5_file
    md5 = hashlib.md5()
ValueError: [digital envelope routines: EVP_DigestInit_ex] disabled for FIPS

----------------------------------------------------------------------
Ran 1 test in 0.823s

FAILED (errors=1)

Reproducer with lorax:
1. Install RHEL-8 with in fips mode (fips=1 on kernel command line).
2. Make sure that there are both BaseOS and AppStream repos enabled on the machine.
3. Run:
$ dnf install -y composer-cli lorax-composer
$ systemctl enable lorax-composer --now
$ composer-cli compose start example-http-server qcow2
4. To check the status of the build: composer-cli compose status
5. The compose build failed. Log can be found at /var/log/lorax-composer/composer.log

2020-04-20 02:11:56,449 INFO pylorax: Configuring storage
2020-04-20 02:14:58,482 INFO pylorax: ..Error in atexit._run_exitfuncs:
2020-04-20 02:14:58,482 INFO pylorax: Traceback (most recent call last):
2020-04-20 02:14:58,482 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 53, in run_with_lock
2020-04-20 02:14:58,483 INFO pylorax: return m(*args, **kwargs)
2020-04-20 02:14:58,483 INFO pylorax: File "/usr/lib64/python3.6/site-packages/pyanaconda/storage/osinstall.py", line 2063, in umount_filesystems
2020-04-20 02:14:58,483 INFO pylorax: self.fsset.umount_filesystems(swapoff=swapoff)
2020-04-20 02:14:58,483 INFO pylorax: File "/usr/lib64/python3.6/site-packages/pyanaconda/storage/osinstall.py", line 776, in umount_filesystems
2020-04-20 02:14:58,483 INFO pylorax: device.format.teardown()
2020-04-20 02:14:58,483 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 53, in run_with_lock
2020-04-20 02:14:58,483 INFO pylorax: return m(*args, **kwargs)
2020-04-20 02:14:58,484 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/formats/__init__.py", line 645, in teardown
2020-04-20 02:14:58,484 INFO pylorax: type=self.type, status=self.status)
2020-04-20 02:14:58,484 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 53, in run_with_lock
2020-04-20 02:14:58,484 INFO pylorax: return m(*args, **kwargs)
2020-04-20 02:14:58,484 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/formats/fs.py", line 779, in status
2020-04-20 02:14:58,484 INFO pylorax: return self.system_mountpoint is not None
2020-04-20 02:14:58,484 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/threads.py", line 53, in run_with_lock
2020-04-20 02:14:58,484 INFO pylorax: return m(*args, **kwargs)
2020-04-20 02:14:58,484 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/formats/fs.py", line 488, in system_mountpoint
2020-04-20 02:14:58,485 INFO pylorax: getattr(self, "subvolspec", None))[-1]
2020-04-20 02:14:58,485 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/mounts.py", line 109, in get_mountpoints
2020-04-20 02:14:58,485 INFO pylorax: self._cache_check()
2020-04-20 02:14:58,485 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/mounts.py", line 171, in _cache_check
2020-04-20 02:14:58,485 INFO pylorax: md5hash = util.md5_file("/proc/mounts")
2020-04-20 02:14:58,485 INFO pylorax: File "/usr/lib/python3.6/site-packages/blivet/util.py", line 574, in md5_file
2020-04-20 02:14:58,485 INFO pylorax: md5 = hashlib.md5()
2020-04-20 02:14:58,485 INFO pylorax: ValueError: [digital envelope routines: EVP_DigestInit_ex] disabled for FIPS
Comment 6 Vojtech Trefny 2020-05-20 07:36:22 UTC 
*** Bug 1837853 has been marked as a duplicate of this bug. ***
Comment 12 errata-xmlrpc 2020-11-04 03:22:23 UTC 
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 (python-blivet 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-2020:4728
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