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cURL 7.77.0 would use a bogus TLS priority string favoring older TLS
protocol versions, which in turn would prevent access to bitbucket.org:
https://issues.guix.gnu.org/49035
https://github.com/curl/curl/pull/7278
This patch fixes it.
From <https://github.com/curl/curl/pull/7278/commits/b98f79f6ecdb708c67f9a0cec56ce48952a54556>.
From b98f79f6ecdb708c67f9a0cec56ce48952a54556 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 18 Jun 2021 14:54:07 +0200
Subject: [PATCH] gnutls: set the prefer ciphers in correct order
Reported-by: civodul on github
Assisted-by: Nikos Mavrogiannopoulos
Fixes #7277
---
lib/vtls/gtls.c | 30 +++++++++++++-----------------
1 file changed, 13 insertions(+), 17 deletions(-)
diff --git a/lib/vtls/gtls.c b/lib/vtls/gtls.c
index d9bc5611e8f9..da2af64955c3 100644
--- a/lib/vtls/gtls.c
+++ b/lib/vtls/gtls.c
@@ -330,6 +330,9 @@ set_ssl_version_min_max(struct Curl_easy *data,
ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_2;
}
}
+ else if(ssl_version_max == CURL_SSLVERSION_MAX_DEFAULT) {
+ ssl_version_max = CURL_SSLVERSION_MAX_TLSv1_3;
+ }
switch(ssl_version | ssl_version_max) {
case CURL_SSLVERSION_TLSv1_0 | CURL_SSLVERSION_MAX_TLSv1_0:
@@ -338,11 +341,11 @@ set_ssl_version_min_max(struct Curl_easy *data,
return CURLE_OK;
case CURL_SSLVERSION_TLSv1_0 | CURL_SSLVERSION_MAX_TLSv1_1:
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
- "+VERS-TLS1.0:+VERS-TLS1.1";
+ "+VERS-TLS1.1:+VERS-TLS1.0";
return CURLE_OK;
case CURL_SSLVERSION_TLSv1_0 | CURL_SSLVERSION_MAX_TLSv1_2:
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
- "+VERS-TLS1.0:+VERS-TLS1.1:+VERS-TLS1.2";
+ "+VERS-TLS1.2:+VERS-TLS1.1:+VERS-TLS1.0";
return CURLE_OK;
case CURL_SSLVERSION_TLSv1_1 | CURL_SSLVERSION_MAX_TLSv1_1:
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
@@ -350,7 +353,7 @@ set_ssl_version_min_max(struct Curl_easy *data,
return CURLE_OK;
case CURL_SSLVERSION_TLSv1_1 | CURL_SSLVERSION_MAX_TLSv1_2:
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
- "+VERS-TLS1.1:+VERS-TLS1.2";
+ "+VERS-TLS1.2:+VERS-TLS1.1";
return CURLE_OK;
case CURL_SSLVERSION_TLSv1_2 | CURL_SSLVERSION_MAX_TLSv1_2:
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
@@ -360,25 +363,17 @@ set_ssl_version_min_max(struct Curl_easy *data,
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
"+VERS-TLS1.3";
return CURLE_OK;
- case CURL_SSLVERSION_TLSv1_0 | CURL_SSLVERSION_MAX_DEFAULT:
- *prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
- "+VERS-TLS1.0:+VERS-TLS1.1:+VERS-TLS1.2"
- ":+VERS-TLS1.3";
+ case CURL_SSLVERSION_TLSv1_0 | CURL_SSLVERSION_MAX_TLSv1_3:
+ *prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0";
return CURLE_OK;
- case CURL_SSLVERSION_TLSv1_1 | CURL_SSLVERSION_MAX_DEFAULT:
+ case CURL_SSLVERSION_TLSv1_1 | CURL_SSLVERSION_MAX_TLSv1_3:
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
- "+VERS-TLS1.1:+VERS-TLS1.2"
- ":+VERS-TLS1.3";
+ "+VERS-TLS1.3:+VERS-TLS1.2:+VERS-TLS1.1";
return CURLE_OK;
- case CURL_SSLVERSION_TLSv1_2 | CURL_SSLVERSION_MAX_DEFAULT:
+ case CURL_SSLVERSION_TLSv1_2 | CURL_SSLVERSION_MAX_TLSv1_3:
*prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
- "+VERS-TLS1.2"
- ":+VERS-TLS1.3";
+ "+VERS-TLS1.3:+VERS-TLS1.2";
return CURLE_OK;
- case CURL_SSLVERSION_TLSv1_3 | CURL_SSLVERSION_MAX_DEFAULT:
- *prioritylist = GNUTLS_CIPHERS ":-VERS-SSL3.0:-VERS-TLS-ALL:"
- "+VERS-TLS1.2"
- ":+VERS-TLS1.3";
return CURLE_OK;
}
@@ -608,6 +603,7 @@ gtls_connect_step1(struct Curl_easy *data,
}
else {
#endif
+ infof(data, "GnuTLS ciphers: %s\n", prioritylist);
rc = gnutls_priority_set_direct(session, prioritylist, &err);
#ifdef HAVE_GNUTLS_SRP
}
|
