splunksecrets - Encrypt / Decrypt Splunk encrypted passwords
splunksecrets is a tool for working with Splunk secrets offline. It currently supports encryption and decryption of passwords, but in the future will support offline recursive conversion of a Splunk installation from one splunk.secret file to another (e.g. for synchronizing splunk.secret across your entire distributed infrastructure).
splunksecrets can be installed using pip3:
pip3 install splunksecrets
Or, if you’re feeling adventurous, can be installed directly from github:
pip3 install git+https://github.com/HurricaneLabs/splunksecrets.git
usage: splunksecrets [-h] [--splunk-secret SPLUNK_SECRET] [--splunk-secret-text SPLUNK_SECRET_TEXT] [-D] [--new] [--nosalt] [--password PASSWORD] optional arguments: -h, --help show this help message and exit --splunk-secret SPLUNK_SECRET --splunk-secret-text SPLUNK_SECRET_TEXT -D, --decrypt -H, --hash-passwd --new --nosalt --password PASSWORD * a bullet point using "*" - a sub-list using "-"
Use --new when encrypting/decrypting Splunk 7.2 secrets (indicated by $7$)
Use --nosalt when encrypting/decrypting Splunk pre-7.2 secrets that are not hashed
Use --splunk-secret-text to specify splunk.secret contents on the command line
Use --password to specify password to be encrypted/decrypted on the command line
NOTE: when doing so, on *nix or other platforms running bash-like shells, you must escape the $ in passwords, like so:
splunksecrets --splunk-secret-text ... --password \$1\$.....
Use --hash-password to generate a hash for $SPLUNK_HOME/etc/passwd
Splunk passwd hashes
Splunk password hashes are not, strictly speaking, encrypted. They’re hashed using the standard Unix crypt function. The $6$ indicates that SHA-512 hashing algorithm is used. Details on SHA-crypt can be found here.
Splunk prior to 7.2 used RC4 encryption for secrets, indicated in configuration files by $1$ in the encrypted password. The plaintext password is XOR’ed with a static salt (DEFAULTSA) and then RC4 encrypted using the first 16-bytes of splunk.secret as the key. The resulting ciphertext is base64-encoded and prepended with $1$ to produce the encrypted password seen in the configuration files.
Starting in Splunk 7.2, AES256-GCM is used for encryption of secrets, indicated in configuration files by $7$ in the encrypted password. The PBKDF2 algorithm is used to derive an encryption key from all 254 bytes of splunk.secret (the newline character is stripped from the end of the file), using a static salt of disk-encryption and a single iteration. This 256-bit key is then used as the encryption key for AES256-GCM, with a 16-byte randomly generated initialization vector. The encryption produces both the ciphertext as well as a “tag” that is used as part of integrity verification. The iv, ciphertext, and tag (in that order) are concatenated, base64-encoded, and prepended with $7$ to produce the encrypted password seen in the configuration files.
- None so far!
Version 0.4.2 (2019-09-29)
- Add handling for incorrectly padded (but otherwise correct) password strings as a convenience (thanks rafrey-his)
Version 0.4.1 (2019-09-11)
- Fix an issue in Python 3 when using --splunk-secret-text (thanks Joeboyc2)
Version 0.4.0 (2019-03-25)
- Add --hash-passwd flag for generating Splunk password hashes
Version 0.3.1 (2019-02-06)
- Fix bug when a character in the password was the same as the salt character
- Add --splunk-secret-text and --password arguments for non-interactive use (thanks nadidsky)
Version 0.3.0 (2019-01-26)
- Add --nosalt flag for pre-7.2 passwords that are not salted, such as sslPassword (thanks duckfez)
Version 0.2.1 (2018-10-27)
- Cosmetic release to update metadata on PyPI
Version 0.2.0 (2018-10-24)
- Add support for Splunk 7.2
Version 0.1.0 (2018-10-08)
- Initial release
- Support Splunk < 7.2
The MIT License (MIT)
Copyright (c) 2018 Hurricane Labs LLC
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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