Hello,
In 1.0.1s OpenSSL disabled SSLv2 by default in the build. So use perl Configure
no-asm enable-ssl2 -DOPENSSL_USE_IPV6=0 VC-WIN32
Excerpt from CHANGES
"Changes between 1.0.1r and 1.0.1s [1 Mar 2016]"
“
Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2
is by default disabled at build-time. Builds that are not configured with
"enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used,
users who want to negotiate SSLv2 via the version-flexible SSLv23_method()
will need to explicitly call either of:
SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2);
or
SSL_clear_options(ssl, SSL_OP_NO_SSLv2);
as appropriate. Even if either of those is used, or the application
explicitly uses the version-specific SSLv2_method() or its client and
server variants, SSLv2 ciphers vulnerable to exhaustive search key
recovery have been removed. Specifically, the SSLv2 40-bit EXPORT
ciphers, and SSLv2 56-bit DES are no longer available.
(CVE-2016-0800)”
I highly advise you to stay clear of SSLv2 as it has numerous flaws. You are
receiving crashes because SSLv2_server_method() returns NULL and SSL_CTX_new()
returns NULL because the input argument (the server method) is NULL. You should
check the return value of SSL_CTX_new() no matter what because it can fail.
Kurt Cancemi
k...@x64architecture.com
> On Jul 11, 2016, at 08:10, Dmytro Shamatrin via RT <r...@openssl.org> wrote:
>
> Appcrash on SSL_CTX_new(SSLv2_server_method()) on windows 7 x64 with
> OpenSSL-1.0.1t
>
> After upgrade from OpenSSL-1.0.1L version to 1.0.1t we got Appcrash on
> windows machine. After investigation I found that it started to happen after
> R version.
--
Ticket here: http://rt.openssl.org/Ticket/Display.html?id=4612
Please log in as guest with password guest if prompted
--
openssl-dev mailing list
To unsubscribe: https://mta.openssl.org/mailman/listinfo/openssl-dev
