/mandos/release

To get this branch, use:
bzr branch http://bzr.recompile.se/loggerhead/mandos/release

« back to all changes in this revision

Viewing changes to plugins.d/splashy.xml

  • Committer: teddy at recompile
  • Date: 2020-12-03 20:30:45 UTC
  • mto: This revision was merged to the branch mainline in revision 404.
  • Revision ID: teddy@recompile.se-20201203203045-iqd6nq9y5nwalh1x
Minor fix of a test function

In dracut-module/password-agent, the test function
test_send_password_to_socket_EMSGSIZE() (which tests that the
send_password_to_socket() task function aborts properly when getting
EMSGSIZE when writing to the password socket), part of the test code
is supposed to find a message size which definitely does trigger
EMSGSIZE when send()ing to a socket.  Without a "break" in the proper
place, however, the size given is always exactly 1024 bytes too large.

This is very probably not a problem, since a too large message will
still be too large if it is increased by 1024 bytes, and send(2) in
practice checks the size before reading the buffer.  The biggest issue
would be if some version of send(2) would try to look at the last 1024
bytes of the message buffer before checking the message size; this
would then lead to a buffer over-read when running this test function.
(But even then there would be no security implications since the tests
are not run in the normal operation of the program.)

* dracut-module/password-agent.c
  (test_send_password_to_socket_EMSGSIZE): Break out early when ssret
  < 0 and errno == EMSGSIZE; don't allow loop to increase message_size
  again.

Show diffs side-by-side

added added

removed removed

Lines of Context:
2
2
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3
3
        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4
4
<!ENTITY COMMANDNAME "splashy">
5
 
<!ENTITY TIMESTAMP "2015-07-20">
 
5
<!ENTITY TIMESTAMP "2019-02-10">
6
6
<!ENTITY % common SYSTEM "../common.ent">
7
7
%common;
8
8
]>
39
39
      <year>2013</year>
40
40
      <year>2014</year>
41
41
      <year>2015</year>
 
42
      <year>2016</year>
 
43
      <year>2017</year>
 
44
      <year>2018</year>
 
45
      <year>2019</year>
42
46
      <holder>Teddy Hogeborn</holder>
43
47
      <holder>Björn Påhlsson</holder>
44
48
    </copyright>
131
135
        <para>
132
136
          These variables will normally be inherited from
133
137
          <citerefentry><refentrytitle>plugin-runner</refentrytitle>
134
 
          <manvolnum>8mandos</manvolnum></citerefentry>, which will
135
 
          normally have inherited them from
136
 
          <filename>/scripts/local-top/cryptroot</filename> in the
137
 
          initial <acronym>RAM</acronym> disk environment, which will
138
 
          have set them from parsing kernel arguments and
139
 
          <filename>/conf/conf.d/cryptroot</filename> (also in the
140
 
          initial RAM disk environment), which in turn will have been
141
 
          created when the initial RAM disk image was created by
142
 
          <filename
143
 
          >/usr/share/initramfs-tools/hooks/cryptroot</filename>, by
144
 
          extracting the information of the root file system from
145
 
          <filename >/etc/crypttab</filename>.
 
138
          <manvolnum>8mandos</manvolnum></citerefentry>, which might
 
139
          have in turn inherited them from its calling process.
146
140
        </para>
147
141
        <para>
148
142
          This behavior is meant to exactly mirror the behavior of
208
202
      is ugly, but necessary as long as it does not support aborting a
209
203
      password request.
210
204
    </para>
 
205
    <xi:include href="../bugs.xml"/>
211
206
  </refsect1>
212
207
  
213
208
  <refsect1 id="example">
271
266
    <para>
272
267
      <citerefentry><refentrytitle>intro</refentrytitle>
273
268
      <manvolnum>8mandos</manvolnum></citerefentry>,
274
 
      <citerefentry><refentrytitle>crypttab</refentrytitle>
275
 
      <manvolnum>5</manvolnum></citerefentry>,
276
269
      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
277
270
      <manvolnum>8mandos</manvolnum></citerefentry>,
278
271
      <citerefentry><refentrytitle>proc</refentrytitle>