March 2022 - stunnel-users

the stunnel stops showing the ssl after a few hours of operation
by daniel＠hostingtico.com 18 Mar '22

18 Mar '22

hello, thank you very much for the opportunity to humbly ask for help, I had a server with centos 6 for approximately 3 years and the stunnel never gave me any problem, I recently changed my server with centos 7 but now after a few hours of being active it stops showing the ssl in the ports that I have configured to show shoutcast when viewing the stunnel status: service stunnel status after a few hours it shows most of the result in red and there it does not show the shoutcast in ssl, after giving restart: service stunnel restart everything returns to normal but before 6 hours the problem returns, Could someone give me a light to solve this problem, I'm running the latest version of stunnel my stunnel.conf: client=no [Orto] accept=7000 connect=208.77.20.179:8006 cert = /etc/stunnel/stunnel.pem sslVersion = TLSv1.2 [radio] accept=7002 connect=208.77.20.179:9942 cert = /etc/stunnel/stunnel.pem sslVersion = TLSv1.2 [Metro] accept=7004 connect=208.77.20.179:8014 cert = /etc/stunnel/stunnel.pem sslVersion = TLSv1.2 [arrge] accept=7006 connect=208.77.20.179:8016 cert = /etc/stunnel/stunnel.pem sslVersion = TLSv1.2 [radio2] accept=7008 connect=208.77.20.179:9932 cert = /etc/stunnel/stunnel.pem sslVersion = TLSv1.2 [Radiored] accept=7010 connect=208.77.20.179:8023 cert = /etc/stunnel/stunnel.pem sslVersion = TLSv1.2

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stunnel error message
by Stephen McQuaid 18 Mar '22

18 Mar '22

Hello, I am getting the following error message in stunnel 2022.03.18 14:27:01 LOG3[0]: SSL_read (s_ssl_read_eof): Operation would block (WSAEWOULDBLOCK) (10035) 2022.03.18 14:27:01 LOG5[0]: Connection reset: 0 byte(s) sent to TLS, 0 byte(s) sent to socket But when I send a second email immediately after the first one, it goes through ok, does anyone know how to resolve this please?? Regards, Stephen McQuaid Local I.T. Office, Dublin, Ireland Henkel dx - creating the next [Ein Bild, das Schild, Ende, sitzend, Front enth?lt. Automatisch generierte Beschreibung] Office : +353-1-4046338 Mobile: +353-87-2470012 stephen.mcquaid(a)henkel.com<mailto:stephen.mcquaid@henkel.com> www.henkeldx.com<http://www.henkeldx.com/> Have a question visit Digital Business Norden<https://henkelgroup.sharepoint.com/teams/IBSNITInfoPortal/SitePages/IBS-Nor…>

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stunnel 5.63 released
by Michał Trojnara 15 Mar '22

15 Mar '22

Dear Users, I have released version 5.63 of stunnel. ### Version 5.63, 2022.03.15, urgency: HIGH * Security bugfixes - OpenSSL DLLs updated to version 3.0.2. * New features - Updated stunnel.spec to support bash completion. * Bugfixes - Fixed a PRNG initialization crash (thx to Gleydson Soares). Home page: https://www.stunnel.org/ Download: https://www.stunnel.org/downloads.html SHA-256 hashes: c74c4e15144a3ae34b8b890bb31c909207301490bd1e51bfaaa5ffeb0a994617 stunnel-5.63.tar.gz 723f54c28073f17b1ac095a2ab9922735c69f73fba6144a5c68cc160dc673b10 stunnel-5.63-win64-installer.exe c77850c39dfb42f95d26d4f5830a261a95c3785d8c39bdd9f28764ba43ee1d7d stunnel-5.63-android.zip Best regards, Mike

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src/ssl.c:319 - RAND_get_rand_method() may return NULL
by Gleydson Soares 03 Mar '22

03 Mar '22

Hello, The following patch avoids crashess. In src/ssl.c:prng_init(), the RAND_get_rand_method() may return NULL so strict the check to skip PRNG initialization. Diff inline below, against 5.62 gsoares --- ssl.c.orig Thu Mar 3 16:10:39 2022 +++ ssl.c Thu Mar 3 16:13:17 2022 @@ -354,7 +354,7 @@ NOEXPORT int prng_init(GLOBAL_OPTIONS *global) { const RAND_METHOD *meth=RAND_get_rand_method(); /* skip PRNG initialization when no seeding methods are available */ - if(meth->status==NULL || meth->add==NULL) { + if(meth==NULL || meth->status==NULL || meth->add==NULL) { s_log(LOG_DEBUG, "No PRNG seeding methods"); return 0; /* success */ }

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Error -63 when connecting to Office 365 to retrieve emails
by sedick＠logicore.co.za 01 Mar '22

01 Mar '22

Hi All, A problem started recently with error -63 when connecting to office 365 server to retrieve emails. The code I am using are as follows: * variables ChannelNo = 0 Pop3Server = 'outlook.office365.com' Pop3User = UserName Pop3Pass = Password Pop3Port = '995' ProxYServer = '127.0.0.1' ProxyPort = '110' ProxyDir = 'C:\see4OI\SSL\' ProxyExe = 'stunnel.exe' ProxyCert = 'stunnel.pem' * retreives mail in MIME format Gosub GET_EMAILS return Mail_Rec * ----------------------------------------------------------------------------------------- GET_EMAILS: * close previous session If it wasnt closed properly Code = seeClose(ChannelNo) Code = seeRelease() * attach key code Code = seeAttach(1, KeyCode) if Code < 0 then RetFlag = 1 return end * start stunnel Code = seeSetProxySSL(0, 1, ProxyDir, ProxyCert, ProxyExe) If Code < 0 Then RETURN end * connect to email server Code = seePop3ConnectSSL(ChannelNo, ProxyPort, Pop3Port, Pop3Server, Pop3User, Pop3Pass, ProxyServer) If Code < 0 Then RETURN End Help urgently required please. Stunnel version 5.42 with a special exception for OpenSSL Kind Regards, Sedick

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