Auth Panic hmac.c while Local Validation
Mrinal Sharma
msharma at smithmicro.com
Wed Sep 16 07:03:35 EEST 2020
No, this is the mistake I did. The access token generated is based on RS256. This issue can be closed. I have sent another mail wherein I see "Cannot load key: Invalid dovecot key version".
Thank you for the Quick response.
Mrinal
-----Original Message-----
From: Aki Tuomi <aki.tuomi at open-xchange.com>
Sent: Tuesday, September 15, 2020 1:07 PM
To: Mrinal Sharma <msharma at smithmicro.com>; dovecot at dovecot.org
Subject: Re: Auth Panic hmac.c while Local Validation
CAUTION - EXTERNAL EMAIL This email originated from outside of Smith Micro Software. Do not click links or open attachments unless you recognize the sender and know the content is safe.
> On 15/09/2020 19:39 Mrinal Sharma <msharma at smithmicro.com> wrote:
>
>
> I am trying to use a newly added Local Validation functionality in dovecot version 2.3.11. I am running dovecot inside a Docker container With base image " debian:buster-slim". When I try to login through below command , a crash is seen.
>
> '''
> a1 login admin
> eyJhbGci44444zUxMiIsInR5cCI6IkpXVCJ9.eyJ1c2fyX25hbWUiOiJhZG1pbiIsInNjb
> 3BlIjpbIm9wZW5pZCJdLCJleffiOjE3MDAxODAwNTksInN1YiI6ImFkbWluIiwiaWF0Ijo
> xNjAwMTc5NzU5LCJhdXRob3JpdGllcyI6WyJST0xFX0FETUlOIiwiUk9MRV9VU0VSIl0sI
> mp0aSI6ImRyOUV0MVVJWkdJZkZ0emFVZW5VRzRzcmQtQSIsImNsaWVudF9pZCI6IndlYl9
> hcHAifQ.T9BTZYW52p0VG9gxmTb-cf5GXF5jTOjdkqMaUMAGX-tffffft7YfdPptphGKE8
> FO9opxcnL--Bjy9ip-XYuWqA
> ''''
>
> Crash:
> dovecot_1 | Sep 15 16:11:50 auth: Panic: file hmac.c: line 26 (hmac_init): assertion failed: (meth->context_size <= HMAC_MAX_CONTEXT_SIZE)
> dovecot_1 | Sep 15 16:11:50 auth: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x3d) [0x7ff77b36beed] -> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7ff77b36c00e] -> /usr/lib/dovecot/libdovecot.so.0(+0xf465b) [0x7ff77b37565b] -> /usr/lib/dovecot/libdovecot.so.0(+0xf46f1) [0x7ff77b3756f1] -> /usr/lib/dovecot/libdovecot.so.0(+0x514a6) [0x7ff77b2d24a6] -> /usr/lib/dovecot/libdovecot.so.0(+0x52415) [0x7ff77b2d3415] -> /usr/lib/dovecot/libdovecot.so.0(+0x59c09) [0x7ff77b2dac09] -> /usr/lib/dovecot/libdovecot.so.0(oauth2_try_parse_jwt+0x7bb) [0x7ff77b2db60b] -> dovecot/auth(+0x3bf71) [0x55576d3cdf71] -> dovecot/auth(db_oauth2_lookup+0x350) [0x55576d3cf030] -> dovecot/auth(auth_request_default_verify_plain_continue+0x2d6) [0x55576d3b3386] -> dovecot/auth(auth_request_verify_plain_callback_finish+0x5c) [0x55576d3b214c] -> dovecot/auth(auth_request_verify_plain_callback+0x51) [0x55576d3b2281] -> dovecot/auth(+0x30171) [0x55576d
3c2171] -> dovecot/auth(+0x27ebb) [0x55576d3b9ebb] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7ff77b38b989] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x131) [0x7ff77b38ced1] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x4c) [0x7ff77b38ba2c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x7ff77b38bba0] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7ff77b3059c3] -> dovecot/auth(main+0x3e1) [0x55576d3a6fa1] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7ff77b03809b] -> dovecot/auth(_start+0x2a) [0x55576d3a713a]
> dovecot_1 | Sep 15 16:11:50 auth-worker(25): Debug: conn unix:auth-worker (pid=24,uid=101): Disconnected: Connection closed (fd=-1)
> dovecot_1 | Sep 15 16:11:50 imap-login: Debug: Ignoring unknown passdb extra field: temp
>
>
> dovecot --version
> 2.3.11.3 (502c39af9)
>
>
>
> dovecot -n
> # 2.3.11.3 (502c39af9): /etc/dovecot/dovecot.conf # OS: Linux
> 4.19.76-linuxkit x86_64 Debian 10.5 fuse.grpcfuse # Hostname:
> 45e39b46f6ab auth_debug = yes auth_mechanisms = plain oauthbearer
> xoauth2 auth_verbose = yes disable_plaintext_auth = no
> doveadm_password = # hidden, use -P to show it log_path = /dev/stdout
> mail_debug = yes mail_location = maildir:/data/imap_store/%n
> mail_plugins = " quota"
> namespace inbox {
> inbox = yes
> location =
> mailbox Drafts {
> special_use = \Drafts
> }
> mailbox Greeting {
> auto = create
> }
> mailbox Junk {
> special_use = \Junk
> }
> mailbox Sent {
> special_use = \Sent
> }
> mailbox "Sent Messages" {
> special_use = \Sent
> }
> mailbox Trash {
> auto = no
> special_use = \Trash
> }
> prefix =
> }
> passdb {
> driver = pam
> }
> passdb {
> args = /etc/dovecot/dovecot-oauth2.plain.conf.ext
> driver = oauth2
> mechanisms = plain login
> }
> plugin {
> quota = maildir:User quota
> quota_rule = *:storage=5MB
> quota_status_nouser = DUNNO
> quota_status_overquota = 552 5.2.2 Mailbox is full
> quota_status_success = DUNNO
> }
> protocols = imap lmtp
> service doveadm {
> inet_listener http {
> port = 80
> }
> }
> service lmtp {
> inet_listener lmtp {
> address = *
> port = 24
> }
> process_min_avail = 5
> }
> ssl = no
> userdb {
> driver = passwd
> }
> userdb {
> args = /etc/dovecot/dovecot-sql.conf.ext
> driver = sql
> }
> protocol lmtp {
> mail_plugins = quota
> postmaster_address = postmaster at domainname } protocol lda {
> mail_plugins = " quota notify push_notification"
> }
> protocol imap {
> imap_metadata = yes
> mail_plugins = " quota imap_quota quota"
> }
>
> Any help would be appreciated.
>
> Thanks,
> Mrinal
Are you using HMAC keys? What size?
Aki
More information about the dovecot
mailing list