1 User-Visible krb5-strength Changes
3 krb5-strength 2.1 (2013-10-10)
5 Fix the package build when CDB support is disabled or TinyCDB was not
8 Some of the password rejection error messages have been changed to
9 make them more accurate or comprehensible to the user.
11 Passing --with-tinycdb to configure now correctly makes TinyCDB
12 support mandatory without adding bogus directories to the library and
15 krb5-strength 2.0 (2013-10-07)
17 Add support for the MIT Kerberos password quality plugin interface,
18 available in MIT Kerberos 1.9 and later, contributed by Greg Hudson
19 and MIT. Drop the patch for MIT Kerberos 1.4 (and hence support for
20 versions of MIT Kerberos prior to 1.9). A dictionary path set in
21 krb5.conf takes precedence over the dictionary path provided by MIT
22 Kerberos when the plugin is initialized, if both are set, to allow the
23 dict_path configuration setting to be used for other plugins while
24 using a separate dictionary for krb5-strength.
26 The default installation path for this plugin is now
27 /usr/local/lib/krb5/plugins/pwqual/strength.so (for both MIT and
28 Heimdal), assuming a --libdir setting of /usr/local/lib. This may
29 require updates to the Kerberos KDC configuration or moving the plugin
30 when upgrading from earlier versions.
32 Add support for building with TinyCDB and then checking passwords
33 against a CDB database. There is a new password_dictionary_cdb
34 krb5.conf configuration setting that configures a CDB directory to
35 use. The tests with a CDB dictionary are much simpler: passwords are
36 rejected if found in the dictionary either literally, with one or two
37 characters removed from the start or end, or with one character
38 removed from both the start and the end. Both a CrackLib and a CDB
39 dictionary can be specified to check both dictionaries. A new
40 cdbmake-wordlist utility (written in Perl) is included to ease the
41 process of creating a CDB database from a simple word list.
43 A minimum password length can now be enforced directly via the plugin
44 or external check program without relying on CrackLib. To set a
45 minimum password length, add a minimum_length setting to the
46 krb5-strength section of [appdefaults] in krb5.conf.
48 New boolean settings require_ascii_printable and require_non_letter
49 are supported in the krb5-strength setting of [appdefaults] in
50 krb5.conf. The former rejects passwords containing characters other
51 than printable ASCII characters (including space), and the latter
52 requires that passwords contain at least one character that is not a
53 letter (upper or lower case) or a space.
55 The plugin can now be configured without a dictionary, in which case
56 only checks for a password based on the principal and the simpler
57 checks available through the new configuration variables are done.
58 This mode is mostly useful for testing, since such simple checking can
59 more easily be done via less complex password strength configurations.
61 The check for passwords based on the principal now check for passwords
62 formed by reversing or adding numbers before and after each separate
63 component of the principal. This will catch passwords based on the
64 realm or components of the realm, which will often catch passwords
65 based on the name of the local institution.
67 The plugin now sets the Kerberos error message in the context to pass
68 error information, resulting in higher-quality error reporting in the
71 CrackLib checks for passwords where a character is a simple increment
72 or decrement of the previous character. In previous versions, the
73 embedded version of CrackLib allowed at most four such occurrences in
74 the entire password. This results in false positives on long
75 passphrases, since such accidental letter relationships aren't
76 uncommon in human languages. Change the embedded CrackLib to allow
77 one such simple increment for every three characters in the password,
78 which tightens the check somewhat for shorter passwords and loosens it
79 considerably for longer passwords.
81 Expect the Heimdal password strength checking plugin header in
82 kadm5/kadm5-pwcheck.h instead of outside of the kadm5 directory. This
83 is the path used by current versions of Heimdal. Drop support for
84 older versions of Heimdal that don't install this header file.
86 Update to rra-c-util 4.9:
88 * Probe for Kerberos headers using file checks instead of compiles.
89 * Improve probe for the Heimdal libroken library.
90 * Always build with large file support.
91 * Conditionally call AM_PROG_AR for portability to new Autotools.
93 Update to C TAP Harness 2.2:
95 * Allow more easily running single programs under tests/runtests.
96 * Flush the output from the test harness after each test.
98 krb5-strength 1.1 (2012-05-11)
100 Change the minimum password length in the embedded CrackLib to 8.
102 Reject passwords formed from the username portion of the principal
103 with digits appended.
105 In the embedded CrackLib, also check for a duplicated dictionary word.
107 Support linking with the system CrackLib instead of the embedded and
108 stricter copy by passing --with-cracklib to configure.
110 Fix variable sizes in the embedded CrackLib on 64-bit platforms. This
111 may fix interoperability problems with databases created on platforms
112 with a different native integer size. Thanks, Karl Lehnberger and
115 Stop using local in the test suite for portability to Solaris /bin/sh.
117 Update to rra-c-util 4.4:
119 * Use PATH_KRB5_CONFIG to override krb5-config location.
120 * Fix probing for ibm_svc/krb5_svc.h on AIX.
121 * Support Heimdal libraries without libroken, like OpenBSD.
122 * Fix manual Kerberos library probing without transitive dependencies.
123 * Support systems that only have krb5/krb5.h.
124 * Pass --deps to krb5-config in the non-reduced-dependencies case.
125 * Silence __attribute__ warnings on more compilers.
126 * Update warning flags for make warnings.
127 * Flesh out MAINTCLEANFILES to remove autogen results.
128 * Add notices to all files copied from rra-c-util.
130 Update to C TAP Harness 1.12:
132 * Drop is_double from the C TAP library to avoid requiring -lm.
133 * Avoid using local in the shell libtap.sh library.
134 * Silence __attribute__ warnings on more compilers.
135 * runtests now frees all allocated resources on exit.
136 * Fix runtests to still honor SOURCE and -s without BUILD and -b.
137 * Add tests/HOWTO documenting how to add new tests.
138 * Ensure correct output ordering in test results.
139 * Add -h and a better usage message to tests/runtests.
141 krb5-strength 1.0 (2010-02-16)
143 Add heimdal-strength, a program that checks password strength using
144 the protocol for a Heimdal external check program.
146 The shared module now also exports the interface expected by Heimdal's
147 dynamically loaded password strength checking API and can be used as a
148 Heimdal kadmin plugin.
150 Add a new plugin API for MIT Kerberos modelled after the plugin API
151 used for other MIT Kerberos plugins. Thanks to Marcus Watts for
152 substantial research and contributions to the interface design. This
153 work is incomplete in this release, missing the corresponding patch to
156 Fixed the data format written by the included packer program to add
157 enough nul bytes at the end of the data. Previously, there was not
158 enough trailing nul bytes for the expected input format, leading to
159 uninitialized memory reads in the password lookup.
161 Add a test suite using the driver and library from C TAP Harness 1.1.
163 Add portability code for platforms without a working snprintf or other
164 deficiencies and updated the code to take advantage of those
167 krb5-strength 0.5 (2007-07-18)
169 The check of the password against the principal checked against the
170 fully-qualified principal, which is not the usual problem.
171 Additionally check that the password doesn't match the principal with
172 the realm removed or the reverse of that (case-insensitive).
174 krb5-strength 0.4 (2007-03-28)
176 The patches directory was omitted from the distribution. Really
179 krb5-strength 0.3 (2007-03-23)
181 Initial public release. Includes a patch for MIT Kerberos, a slightly
182 modified version of CrackLib, and glue wrapped around CrackLib to make