OpenSSL followup SSL_MODE_RELEASE_BUFFERS

Christian Kratzer ck-lists at cksoft.de
Sun Apr 13 08:09:44 UTC 2014


Hi,

apparentyly openbsd has more or less silently fixed an older openssl issue that has been stuck in the openssl bug tracker:

The openbsd patch:

     http://www.openbsd.org/errata55.html#004_openssl

     http://ftp.openbsd.org/pub/OpenBSD/patches/5.5/common/004_openssl.patch.sig

The original issue:

     http://www.tedunangst.com/flak/post/analysis-of-openssl-freelist-reuse

Here is the openssl bug:

     http://rt.openssl.org/Ticket/Display.html?id=2167

The patch;

     diff -u -p -u -r1.20 -r1.20.4.1
     --- lib/libssl/src/ssl/s3_pkt.c	27 Feb 2014 21:04:57 -0000	1.20
     +++ lib/libssl/src/ssl/s3_pkt.c	12 Apr 2014 17:01:14 -0000	1.20.4.1
     @@ -1054,7 +1054,7 @@ start:
 				    {
 				    s->rstate=SSL_ST_READ_HEADER;
 				    rr->off=0;
     -				if (s->mode & SSL_MODE_RELEASE_BUFFERS)
     +				if (s->mode & SSL_MODE_RELEASE_BUFFERS && s->s3->rbuf.left == 0)
 					    ssl3_release_read_buffer(s);
 				    }
 			    }

Can somebody rattle openssl upstream to get them to comment on this ?

Should freebsd roll out a patch ?

Greetings
Christian

-- 
Christian Kratzer                   CK Software GmbH
Email:   ck at cksoft.de               Wildberger Weg 24/2
Phone:   +49 7032 893 997 - 0       D-71126 Gaeufelden
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Mobile:  +49 171 1947 843           Geschaeftsfuehrer: Christian Kratzer
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