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authorRemi Collet <remi@remirepo.net>2023-06-21 10:36:07 +0200
committerRemi Collet <remi@php.net>2023-06-21 10:36:07 +0200
commitd7703b357f346c2a65dc3e3f5adcd7a20ca73d46 (patch)
treeb7907b02b0a012b33f770b9a17c914a61c1d3b42 /php-ghsa-76gg-c692-v2mw.patch
parent5c6189c60bf3cb2105b08a73c45a02d578f3eac7 (diff)
fix possible buffer overflow in date
Diffstat (limited to 'php-ghsa-76gg-c692-v2mw.patch')
-rw-r--r--php-ghsa-76gg-c692-v2mw.patch125
1 files changed, 0 insertions, 125 deletions
diff --git a/php-ghsa-76gg-c692-v2mw.patch b/php-ghsa-76gg-c692-v2mw.patch
deleted file mode 100644
index 21b5b65..0000000
--- a/php-ghsa-76gg-c692-v2mw.patch
+++ /dev/null
@@ -1,125 +0,0 @@
-From e91122cd59b6331574891a5603b3dc173a1ab205 Mon Sep 17 00:00:00 2001
-From: Niels Dossche <7771979+nielsdos@users.noreply.github.com>
-Date: Sun, 16 Apr 2023 15:05:03 +0200
-Subject: [PATCH] Fix missing randomness check and insufficient random bytes
- for SOAP HTTP Digest
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-If php_random_bytes_throw fails, the nonce will be uninitialized, but
-still sent to the server. The client nonce is intended to protect
-against a malicious server. See section 5.10 and 5.12 of RFC 7616 [1],
-and bullet point 2 below.
-
-Tim pointed out that even though it's the MD5 of the nonce that gets sent,
-enumerating 31 bits is trivial. So we have still a stack information leak
-of 31 bits.
-
-Furthermore, Tim found the following issues:
-* The small size of cnonce might cause the server to erroneously reject
- a request due to a repeated (cnonce, nc) pair. As per the birthday
- problem 31 bits of randomness will return a duplication with 50%
- chance after less than 55000 requests and nc always starts counting at 1.
-* The cnonce is intended to protect the client and password against a
- malicious server that returns a constant server nonce where the server
- precomputed a rainbow table between passwords and correct client response.
- As storage is fairly cheap, a server could precompute the client responses
- for (a subset of) client nonces and still have a chance of reversing the
- client response with the same probability as the cnonce duplication.
-
- Precomputing the rainbow table for all 2^31 cnonces increases the rainbow
- table size by factor 2 billion, which is infeasible. But precomputing it
- for 2^14 cnonces only increases the table size by factor 16k and the server
- would still have a 10% chance of successfully reversing a password with a
- single client request.
-
-This patch fixes the issues by increasing the nonce size, and checking
-the return value of php_random_bytes_throw(). In the process we also get
-rid of the MD5 hashing of the nonce.
-
-[1] RFC 7616: https://www.rfc-editor.org/rfc/rfc7616
-
-Co-authored-by: Tim Düsterhus <timwolla@php.net>
-(cherry picked from commit 126d517ce240e9f638d9a5eaa509eaca49ef562a)
-(cherry picked from commit 0cfca9aa1395271833848daec0bace51d965531d)
----
- NEWS | 6 ++++++
- ext/soap/php_http.c | 21 +++++++++++++--------
- 2 files changed, 19 insertions(+), 8 deletions(-)
-
-diff --git a/NEWS b/NEWS
-index a2d95193c4b..534c4787b4e 100644
---- a/NEWS
-+++ b/NEWS
-@@ -1,6 +1,12 @@
- PHP NEWS
- |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
-
-+Backported from 8.0.29
-+
-+- Soap:
-+ . Fixed bug GHSA-76gg-c692-v2mw (Missing error check and insufficient random
-+ bytes in HTTP Digest authentication for SOAP). (nielsdos, timwolla)
-+
- Backported from 8.0.28
-
- - Core:
-diff --git a/ext/soap/php_http.c b/ext/soap/php_http.c
-index b894a1eabfe..9e5ecf6d22a 100644
---- a/ext/soap/php_http.c
-+++ b/ext/soap/php_http.c
-@@ -646,18 +646,23 @@ int make_http_soap_request(zval *this_ptr,
- if ((digest = zend_hash_str_find(Z_OBJPROP_P(this_ptr), "_digest", sizeof("_digest")-1)) != NULL) {
- if (Z_TYPE_P(digest) == IS_ARRAY) {
- char HA1[33], HA2[33], response[33], cnonce[33], nc[9];
-- zend_long nonce;
-+ unsigned char nonce[16];
- PHP_MD5_CTX md5ctx;
- unsigned char hash[16];
-
-- php_random_bytes_throw(&nonce, sizeof(nonce));
-- nonce &= 0x7fffffff;
-+ if (UNEXPECTED(php_random_bytes_throw(&nonce, sizeof(nonce)) != SUCCESS)) {
-+ ZEND_ASSERT(EG(exception));
-+ php_stream_close(stream);
-+ zend_hash_str_del(Z_OBJPROP_P(this_ptr), "httpurl", sizeof("httpurl")-1);
-+ zend_hash_str_del(Z_OBJPROP_P(this_ptr), "httpsocket", sizeof("httpsocket")-1);
-+ zend_hash_str_del(Z_OBJPROP_P(this_ptr), "_use_proxy", sizeof("_use_proxy")-1);
-+ smart_str_free(&soap_headers_z);
-+ smart_str_free(&soap_headers);
-+ return FALSE;
-+ }
-
-- PHP_MD5Init(&md5ctx);
-- snprintf(cnonce, sizeof(cnonce), ZEND_LONG_FMT, nonce);
-- PHP_MD5Update(&md5ctx, (unsigned char*)cnonce, strlen(cnonce));
-- PHP_MD5Final(hash, &md5ctx);
-- make_digest(cnonce, hash);
-+ php_hash_bin2hex(cnonce, nonce, sizeof(nonce));
-+ cnonce[32] = 0;
-
- if ((tmp = zend_hash_str_find(Z_ARRVAL_P(digest), "nc", sizeof("nc")-1)) != NULL &&
- Z_TYPE_P(tmp) == IS_LONG) {
-From 24842f1115d64176e545ad893ad95c4650456efa Mon Sep 17 00:00:00 2001
-From: Remi Collet <remi@remirepo.net>
-Date: Tue, 6 Jun 2023 18:05:22 +0200
-Subject: [PATCH] Fix GH-11382 add missing hash header for bin2hex
-
-(cherry picked from commit 40439039c224bb8cdebd1b7b3d03b8cc11e7cce7)
----
- ext/soap/php_http.c | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/ext/soap/php_http.c b/ext/soap/php_http.c
-index 9e5ecf6d22..2f281dd7db 100644
---- a/ext/soap/php_http.c
-+++ b/ext/soap/php_http.c
-@@ -23,6 +23,7 @@
- #include "ext/standard/base64.h"
- #include "ext/standard/md5.h"
- #include "ext/standard/php_random.h"
-+#include "ext/hash/php_hash.h"
-
- static char *get_http_header_value(char *headers, char *type);
- static zend_string *get_http_body(php_stream *socketd, int close, char *headers);