thr3ads.net - dovecot - configuring Dovecot with wforced and auth_policy_server_url with https results in assertion failed [Mar 2019]

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Robert Kudyba

2019-Mar-28 14:08 UTC

configuring Dovecot with wforced and auth_policy_server_url with https results in assertion failed

dovecot-2.3.3-1.fc29.x86_64

Mar 28 10:04:47 auth: Panic: file http-client-request.c: line 283
(http_client_request_unref): assertion failed: (req->refcount > 0)
Mar 28 10:04:47 auth: Error: Raw backtrace:
/usr/lib64/dovecot/libdovecot.so.0(+0xe34fb) [0x7fe76e0834fb] ->
/usr/lib64/dovecot/libdovecot.so.0(+0xe3597) [0x7fe76e083597] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x51207) [0x7fe76dff1207] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x4972b) [0x7fe76dfe972b] ->
/usr/lib64/dovecot/libdovecot.so.0(http_client_request_destroy+0x107)
[0x7fe76e02cf87] ->
/usr/lib64/dovecot/libdovecot.so.0(http_client_deinit+0x4c) [0x7fe76e03b9ec]
-> dovecot/auth(auth_policy_deinit+0x1e) [0x55facfdb350e] ->
dovecot/auth(main+0x3e1) [0x55facfdae3c1] ->
/lib64/libc.so.6(__libc_start_main+0xf3) [0x7fe76dd93413] ->
dovecot/auth(_start+0x2e) [0x55facfdae57e]
Mar 28 10:04:47 auth: Fatal: master: service(auth): child 31162 killed with
signal 6 (core not dumped - https://dovecot.org/bugreport.html#coredumps - set
/proc/sys/fs/suid_dumpable to 2)
Mar 28 10:04:48 master: Info: Dovecot v2.3.3 (dcead646b) starting up for imap,
pop3

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Aki Tuomi

2019-Mar-28 14:29 UTC

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configuring Dovecot with wforced and auth_policy_server_url with https results in assertion failed

<!doctype html>
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  <blockquote type="cite">
   <div>
    On 28 March 2019 16:08 Robert Kudyba via dovecot <dovecot@dovecot.org>
wrote:
   </div>
   <div>
    <br>
   </div>
   <div>
    <br>
   </div>
   <div class="">
    <div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;">
     <span class="" style="font-variant-ligatures:
no-common-ligatures;">dovecot-2.3.3-1.fc29.x86_64</span>
    </div>
   </div>
   <div class="">
    <br class="">
   </div>
   <div class="">
    <div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;">
     <span class="" style="font-variant-ligatures:
no-common-ligatures;">Mar 28 10:04:47 auth: Panic: file
http-client-request.c: line 283 (http_client_request_unref): assertion failed:
(req->refcount > 0)</span>
    </div>
    <div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;">
     <span class="" style="font-variant-ligatures:
no-common-ligatures;">Mar 28 10:04:47 auth: Error: Raw backtrace:
/usr/lib64/dovecot/libdovecot.so.0(+0xe34fb) [0x7fe76e0834fb] ->
/usr/lib64/dovecot/libdovecot.so.0(+0xe3597) [0x7fe76e083597] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x51207) [0x7fe76dff1207] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x4972b) [0x7fe76dfe972b] ->
/usr/lib64/dovecot/libdovecot.so.0(http_client_request_destroy+0x107)
[0x7fe76e02cf87] ->
/usr/lib64/dovecot/libdovecot.so.0(http_client_deinit+0x4c) [0x7fe76e03b9ec]
-> dovecot/auth(auth_policy_deinit+0x1e) [0x55facfdb350e] ->
dovecot/auth(main+0x3e1) [0x55facfdae3c1] ->
/lib64/libc.so.6(__libc_start_main+0xf3) [0x7fe76dd93413] ->
dovecot/auth(_start+0x2e) [0x55facfdae57e]</span>
    </div>
    <div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;">
     <span class="" style="font-variant-ligatures:
no-common-ligatures;">Mar 28 10:04:47 auth: Fatal: master:
service(auth): child 31162 killed with signal 6 (core not dumped - <a
class=""
href="https://dovecot.org/bugreport.html#coredumps">https://dovecot.org/bugreport.html#coredumps</a>
- set /proc/sys/fs/suid_dumpable to 2)</span>
    </div>
    <div class="" style="margin: 0px; font-stretch: normal;
font-size: 11px; line-height: normal; font-family: Menlo;">
     <span class="" style="font-variant-ligatures:
no-common-ligatures;">Mar 28 10:04:48 master: Info: Dovecot v2.3.3
(dcead646b) starting up for imap, pop3</span>
    </div>
   </div>
   <div class="">
    <span class="" style="font-variant-ligatures:
no-common-ligatures;"><br class=""></span>
   </div>
  </blockquote>
  <div>
   Hi,
  </div>
  <div>
   <br>
  </div>
  <div>
   this is a known issue as DOV-3019 and we are fixing this. It happens during
auth process shutdown if there are pending requests.
  </div>
  <div class="io-ox-signature">
   <pre>---
Aki Tuomi</pre>
  </div> 
 </body>
</html>

Robert Kudyba

2019-Mar-28 19:31 UTC

head link

configuring Dovecot with wforced and auth_policy_server_url with https results in assertion failed

> On Mar 28, 2019, at 10:29 AM, Aki Tuomi via dovecot <dovecot at
dovecot.org> wrote:
> 
>> On 28 March 2019 16:08 Robert Kudyba via dovecot <dovecot at
dovecot.org> wrote:
>> 
>> 
>> dovecot-2.3.3-1.fc29.x86_64
>> 
>> Mar 28 10:04:47 auth: Panic: file http-client-request.c: line 283
(http_client_request_unref): assertion failed: (req->refcount > 0)
>> Mar 28 10:04:47 auth: Error: Raw backtrace:
/usr/lib64/dovecot/libdovecot.so.0(+0xe34fb) [0x7fe76e0834fb] ->
/usr/lib64/dovecot/libdovecot.so.0(+0xe3597) [0x7fe76e083597] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x51207) [0x7fe76dff1207] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x4972b) [0x7fe76dfe972b] ->
/usr/lib64/dovecot/libdovecot.so.0(http_client_request_destroy+0x107)
[0x7fe76e02cf87] ->
/usr/lib64/dovecot/libdovecot.so.0(http_client_deinit+0x4c) [0x7fe76e03b9ec]
-> dovecot/auth(auth_policy_deinit+0x1e) [0x55facfdb350e] ->
dovecot/auth(main+0x3e1) [0x55facfdae3c1] ->
/lib64/libc.so.6(__libc_start_main+0xf3) [0x7fe76dd93413] ->
dovecot/auth(_start+0x2e) [0x55facfdae57e]
>> Mar 28 10:04:47 auth: Fatal: master: service(auth): child 31162 killed
with signal 6 (core not dumped - https://dovecot.org/bugreport.html#coredumps
<https://urldefense.proofpoint.com/v2/url?u=https-3A__dovecot.org_bugreport.html-23coredumps&d=DwMCaQ&c=aqMfXOEvEJQh2iQMCb7Wy8l0sPnURkcqADc2guUW8IM&r=X0jL9y0sL4r4iU_qVtR3lLNo4tOL1ry_m7-psV3GejY&m=IGBmGF0IssHPP5aIO3xrxNm2mUwwDP12018rdFC0vuo&s=IoU3mYEwgiux42XqobrYw4SyE39GjhvuBXoXWA42HKY&e=>
- set /proc/sys/fs/suid_dumpable to 2)
>> Mar 28 10:04:48 master: Info: Dovecot v2.3.3 (dcead646b) starting up
for imap, pop3
>> 
> Hi,
> 
> this is a known issue as DOV-3019 and we are fixing this. It happens during
auth process shutdown if there are pending requests.

Another issue is that the dovecot logs always report the offending URL or IP as
what?s in /etc/dovecot/conf.d/95-auth.conf in our case:
auth_policy_server_url = https://ourdomain:8084/
<https://dsm.dsm.fordham.edu:8084/>

These are HTTP errors in the logs:

Mar 28 09:58:04 auth: Debug: client in: AUTH	1	PLAIN	service=imap	secured
session=lmNw8SeFoMl/AAAB	lip=127.0.0.1	rip=127.0.0.1	lport=143	rport=51616
resp=<hidden>
Mar 28 09:58:04 auth: Debug:
policy(unclroot,127.0.0.1,<lmNw8SeFoMl/AAAB>): Policy request
https://ourdomain:8084/?command=allow
<https://dsm.dsm.fordham.edu:8084/?command=allow>
Mar 28 09:58:04 auth: Debug:
policy(unclroot,127.0.0.1,<lmNw8SeFoMl/AAAB>): Policy server request JSON:
{"device_id":"","login":"unclroot","protocol":"imap","pwhash":"68","remote":"127.0.0.1","tls":false}
Mar 28 09:58:04 auth: Debug: http-client[1]: request [Req11: POST
https://ourdomain:8084/?command=allow]:
<https://dsm.dsm.fordham.edu:8084/?command=allow%5D:> Error: 9003
Couldn't initialize SSL context: Can't verify remote server certs
without trusted CAs (ssl_client_ca_* settings)
Mar 28 09:58:04 auth: Debug: http-client[1]: request [Req11: POST
https://ourdomain:8084/?command=allow]:
<https://dsm.dsm.fordham.edu:8084/?command=allow%5D:> Submitted (requests
left=3)
Mar 28 09:58:04 auth: Error:
policy(unclroot,127.0.0.1,<lmNw8SeFoMl/AAAB>): Policy server HTTP error:
Couldn't initialize SSL context: Can't verify remote server certs
without trusted CAs (ssl_client_ca_* settings)
Mar 28 09:58:04 auth: Debug: http-client[1]: request [Req11: POST
https://ourdomain:8084/?command=allow]:
<https://dsm.dsm.fordham.edu:8084/?command=allow%5D:> Destroy (requests
left=3)
Mar 28 09:58:04 auth: Debug: http-client[1]: request [Req11: POST
https://ourdomain:8084/?command=allow]:
<https://dsm.dsm.fordham.edu:8084/?command=allow%5D:> Free (requests
left=2)


So wforce is always recording the ?bad? IP as 127.0.0.1 or the FQDN, and not the
actual user IP. Is there another place to set this?

Perhaps I have to set this in wforce.conf?
webserver("0.0.0.0:8084", ?ourpassword")
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