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Bugfix: larger message size in ssl3_get_key_exchange() because

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ServerKeyExchange message may be skipped.

Submitted by:  Petr Lampa <lampa@fee.vutbr.cz>
This commit is contained in:
Bodo Möller 2001-08-07 09:31:03 +00:00
parent 65ce21da9a
commit 904de6e4f5
2 changed files with 13 additions and 1 deletions
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6
CHANGES
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@ -4,6 +4,12 @@
Changes between 0.9.6b and 0.9.6c [XX xxx XXXX] Changes between 0.9.6b and 0.9.6c [XX xxx XXXX]
*) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message()
with the same message size as in ssl3_get_certificate_request().
Otherwise, if no ServerKeyExchange message occurs, CertificateRequest
messages might inadvertently be reject as too long.
[Petr Lampa <lampa@fee.vutbr.cz>]
*) Modified SSL library such that the verify_callback that has been set *) Modified SSL library such that the verify_callback that has been set
specificly for an SSL object with SSL_set_verify() is actually being specificly for an SSL object with SSL_set_verify() is actually being
used. Before the change, a verify_callback set with this function was used. Before the change, a verify_callback set with this function was

8
ssl/s3_clnt.c
View file

@ -849,11 +849,17 @@ static int ssl3_get_key_exchange(SSL *s)
DH *dh=NULL; DH *dh=NULL;
#endif #endif
/* use same message size as in ssl3_get_certificate_request()
* as ServerKeyExchange message may be skipped */
n=ssl3_get_message(s, n=ssl3_get_message(s,
SSL3_ST_CR_KEY_EXCH_A, SSL3_ST_CR_KEY_EXCH_A,
SSL3_ST_CR_KEY_EXCH_B, SSL3_ST_CR_KEY_EXCH_B,
-1, -1,
1024*8, /* ?? */ #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32)
1024*30, /* 30k max cert list :-) */
#else
1024*100, /* 100k max cert list :-) */
#endif
&ok); &ok);
if (!ok) return((int)n); if (!ok) return((int)n);