diff options
Diffstat (limited to 'php-bug76450.patch')
| -rw-r--r-- | php-bug76450.patch | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/php-bug76450.patch b/php-bug76450.patch new file mode 100644 index 0000000..e745e42 --- /dev/null +++ b/php-bug76450.patch @@ -0,0 +1,278 @@ +From b671a8dd887ae7f661f6233e734179e8bca3daf6 Mon Sep 17 00:00:00 2001 +From: sim1984 <sim-mail@list.ru> +Date: Mon, 25 Jun 2018 21:35:51 +0300 +Subject: [PATCH 3/8] Fix bug #76488 Memory leak when fetching a BLOB field + +Add a phpt test + +(cherry picked from commit 3847a6fcb63c362548e9434b195232f2dcf7a6c7) +--- + ext/pdo_firebird/firebird_statement.c | 2 +- + ext/pdo_firebird/tests/bug_76488.phpt | 32 +++++++++++++++++++++++++++ + 2 files changed, 33 insertions(+), 1 deletion(-) + create mode 100644 ext/pdo_firebird/tests/bug_76488.phpt + +diff --git a/ext/pdo_firebird/firebird_statement.c b/ext/pdo_firebird/firebird_statement.c +index 3feeedf39f..88be6da369 100644 +--- a/ext/pdo_firebird/firebird_statement.c ++++ b/ext/pdo_firebird/firebird_statement.c +@@ -294,7 +294,7 @@ static int firebird_fetch_blob(pdo_stmt_t *stmt, int colno, char **ptr, /* {{{ * + unsigned short seg_len; + ISC_STATUS stat; + +- *ptr = S->fetch_buf[colno] = erealloc(*ptr, *len+1); ++ *ptr = S->fetch_buf[colno] = erealloc(S->fetch_buf[colno], *len+1); + + for (cur_len = stat = 0; (!stat || stat == isc_segment) && cur_len < *len; cur_len += seg_len) { + +diff --git a/ext/pdo_firebird/tests/bug_76488.phpt b/ext/pdo_firebird/tests/bug_76488.phpt +new file mode 100644 +index 0000000000..dba6734c28 +--- /dev/null ++++ b/ext/pdo_firebird/tests/bug_76488.phpt +@@ -0,0 +1,32 @@ ++--TEST-- ++PDO_Firebird: Bug #76488 Memory leak when fetching a BLOB field ++--SKIPIF-- ++<?php if (!extension_loaded('interbase') || !extension_loaded('pdo_firebird')) die('skip'); ?> ++--FILE-- ++<?php ++require 'testdb.inc'; ++$dbh = new PDO('firebird:dbname='.$test_base, $user, $password) or die; ++ ++$sql = ' ++with recursive r(n) as ( ++ select 1 from rdb$database ++ union all ++ select n+1 from r where n < 1000 ++) ++select n, ++ cast(lpad(\'A\', 8000, \'A\') as BLOB sub_type TEXT) as SRC ++from r ++'; ++ ++ for ($i = 0; $i < 10; $i++) { ++ $sth = $dbh->prepare($sql); ++ $sth->execute(); ++ $rows = $sth->fetchAll(); ++ unset($rows); ++ unset($sth); ++ } ++ unset($dbh); ++ echo "OK"; ++?> ++--EXPECT-- ++OK +\ No newline at end of file +-- +2.31.1 + +From 9a58cd2ba3d99f5312966566a3632b197b676830 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Wed, 5 May 2021 12:42:17 +0200 +Subject: [PATCH 4/8] Fix #76452: Crash while parsing blob data in + firebird_fetch_blob + +We need to prevent integer overflow when calling `erealloc()` with +`len+1`. + +(cherry picked from commit 286162e9b03071c4308e7e92597bca4239f49d89) +--- + ext/pdo_firebird/firebird_statement.c | 5 +++++ + ext/pdo_firebird/tests/bug_76452.data | Bin 0 -> 856 bytes + ext/pdo_firebird/tests/bug_76452.phpt | 31 ++++++++++++++++++++++++++ + 3 files changed, 36 insertions(+) + create mode 100644 ext/pdo_firebird/tests/bug_76452.data + create mode 100644 ext/pdo_firebird/tests/bug_76452.phpt + +diff --git a/ext/pdo_firebird/firebird_statement.c b/ext/pdo_firebird/firebird_statement.c +index 88be6da369..fde897186d 100644 +--- a/ext/pdo_firebird/firebird_statement.c ++++ b/ext/pdo_firebird/firebird_statement.c +@@ -294,6 +294,11 @@ static int firebird_fetch_blob(pdo_stmt_t *stmt, int colno, char **ptr, /* {{{ * + unsigned short seg_len; + ISC_STATUS stat; + ++ /* prevent overflow */ ++ if (*len == ZEND_ULONG_MAX) { ++ result = 0; ++ goto fetch_blob_end; ++ } + *ptr = S->fetch_buf[colno] = erealloc(S->fetch_buf[colno], *len+1); + + for (cur_len = stat = 0; (!stat || stat == isc_segment) && cur_len < *len; cur_len += seg_len) { + +From 7b11e10fa679a575ca61e5bcd66db68193a3b2fb Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Fri, 30 Apr 2021 14:10:50 +0200 +Subject: [PATCH 5/8] Fix #76450: SIGSEGV in firebird_stmt_execute + +We need to verify that the `result_size` is not larger than our buffer, +and also should make sure that the `len` which is passed to +`isc_vax_integer()` has a permissible value; otherwise we bail out. + +(cherry picked from commit bcbf8aa0c96d8d9e81ec3428232485555fae0b37) +--- + ext/pdo_firebird/firebird_statement.c | 7 +++++++ + ext/pdo_firebird/tests/bug_76450.data | Bin 0 -> 464 bytes + ext/pdo_firebird/tests/bug_76450.phpt | 29 ++++++++++++++++++++++++++ + 3 files changed, 36 insertions(+) + create mode 100644 ext/pdo_firebird/tests/bug_76450.data + create mode 100644 ext/pdo_firebird/tests/bug_76450.phpt + +diff --git a/ext/pdo_firebird/firebird_statement.c b/ext/pdo_firebird/firebird_statement.c +index fde897186d..537f6f4038 100644 +--- a/ext/pdo_firebird/firebird_statement.c ++++ b/ext/pdo_firebird/firebird_statement.c +@@ -133,8 +133,14 @@ static int firebird_stmt_execute(pdo_stmt_t *stmt) /* {{{ */ + } + if (result[0] == isc_info_sql_records) { + unsigned i = 3, result_size = isc_vax_integer(&result[1], 2); ++ if (result_size > sizeof(result)) { ++ goto error; ++ } + while (result[i] != isc_info_end && i < result_size) { + short len = (short) isc_vax_integer(&result[i + 1], 2); ++ if (len != 1 && len != 2 && len != 4) { ++ goto error; ++ } + if (result[i] != isc_info_req_select_count) { + affected_rows += isc_vax_integer(&result[i + 3], len); + } +@@ -158,6 +164,7 @@ static int firebird_stmt_execute(pdo_stmt_t *stmt) /* {{{ */ + return 1; + } while (0); + ++error: + RECORD_ERROR(stmt); + + return 0; + +From 5952ac3d2e87d5f00a32f28d6f66209955e6e777 Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Fri, 30 Apr 2021 13:53:21 +0200 +Subject: [PATCH 6/8] Fix #76449: SIGSEGV in firebird_handle_doer + +We need to verify that the `result_size` is not larger than our buffer, +and also should make sure that the `len` which is passed to +`isc_vax_integer()` has a permissible value; otherwise we bail out. + +(cherry picked from commit 08da7c73726f7b86b67d6f0ff87c73c585a7834a) +--- + ext/pdo_firebird/firebird_driver.c | 9 +++++++++ + ext/pdo_firebird/tests/bug_76449.data | Bin 0 -> 464 bytes + ext/pdo_firebird/tests/bug_76449.phpt | 23 +++++++++++++++++++++++ + 3 files changed, 32 insertions(+) + create mode 100644 ext/pdo_firebird/tests/bug_76449.data + create mode 100644 ext/pdo_firebird/tests/bug_76449.phpt + +diff --git a/ext/pdo_firebird/firebird_driver.c b/ext/pdo_firebird/firebird_driver.c +index 166fb13d43..46699d51d4 100644 +--- a/ext/pdo_firebird/firebird_driver.c ++++ b/ext/pdo_firebird/firebird_driver.c +@@ -253,8 +253,17 @@ static zend_long firebird_handle_doer(pdo_dbh_t *dbh, const char *sql, size_t sq + if (result[0] == isc_info_sql_records) { + unsigned i = 3, result_size = isc_vax_integer(&result[1],2); + ++ if (result_size > sizeof(result)) { ++ ret = -1; ++ goto free_statement; ++ } + while (result[i] != isc_info_end && i < result_size) { + short len = (short)isc_vax_integer(&result[i+1],2); ++ /* bail out on bad len */ ++ if (len != 1 && len != 2 && len != 4) { ++ ret = -1; ++ goto free_statement; ++ } + if (result[i] != isc_info_req_select_count) { + ret += isc_vax_integer(&result[i+3],len); + } + +From a1793d85e89a0c33b5496beec204ef3491af4bdc Mon Sep 17 00:00:00 2001 +From: "Christoph M. Becker" <cmbecker69@gmx.de> +Date: Thu, 29 Apr 2021 15:26:22 +0200 +Subject: [PATCH 7/8] Fix #76448: Stack buffer overflow in firebird_info_cb + +We ensure not to overflow the stack allocated buffer by using `strlcat`. + +(cherry picked from commit 67afa32541ebc4abbf633cb1e7e879b2fbb616ad) +--- + ext/pdo_firebird/firebird_driver.c | 8 +++++--- + ext/pdo_firebird/tests/bug_76448.data | Bin 0 -> 749 bytes + ext/pdo_firebird/tests/bug_76448.phpt | 23 +++++++++++++++++++++++ + 3 files changed, 28 insertions(+), 3 deletions(-) + create mode 100644 ext/pdo_firebird/tests/bug_76448.data + create mode 100644 ext/pdo_firebird/tests/bug_76448.phpt + +diff --git a/ext/pdo_firebird/firebird_driver.c b/ext/pdo_firebird/firebird_driver.c +index 46699d51d4..48808d6f3d 100644 +--- a/ext/pdo_firebird/firebird_driver.c ++++ b/ext/pdo_firebird/firebird_driver.c +@@ -556,14 +556,16 @@ static int firebird_handle_set_attribute(pdo_dbh_t *dbh, zend_long attr, zval *v + } + /* }}} */ + ++#define INFO_BUF_LEN 512 ++ + /* callback to used to report database server info */ + static void firebird_info_cb(void *arg, char const *s) /* {{{ */ + { + if (arg) { + if (*(char*)arg) { /* second call */ +- strcat(arg, " "); ++ strlcat(arg, " ", INFO_BUF_LEN); + } +- strcat(arg, s); ++ strlcat(arg, s, INFO_BUF_LEN); + } + } + /* }}} */ +@@ -574,7 +576,7 @@ static int firebird_handle_get_attribute(pdo_dbh_t *dbh, zend_long attr, zval *v + pdo_firebird_db_handle *H = (pdo_firebird_db_handle *)dbh->driver_data; + + switch (attr) { +- char tmp[512]; ++ char tmp[INFO_BUF_LEN]; + + case PDO_ATTR_AUTOCOMMIT: + ZVAL_LONG(val,dbh->auto_commit); + +From 4faea6cc54c742245639ba2736b199c711f2a77b Mon Sep 17 00:00:00 2001 +From: Stanislav Malyshev <stas@php.net> +Date: Sun, 20 Jun 2021 22:20:38 -0700 +Subject: [PATCH 8/8] Update NEWS + +(cherry picked from commit c68a687566591e2268f35d124a90c7d556ce968b) +(cherry picked from commit 7598733c51af30611aa64e456c9a777069d2efb9) +--- + NEWS | 13 +++++++++++++ + 1 file changed, 13 insertions(+) + +diff --git a/NEWS b/NEWS +index 9eff4bd7ae..861dbd7dd5 100644 +--- a/NEWS ++++ b/NEWS +@@ -1,6 +1,19 @@ + PHP NEWS + ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| + ++Backported from 7.3.29 ++ ++- Core: ++ . Fixed #81122: SSRF bypass in FILTER_VALIDATE_URL. (CVE-2021-21705) (cmb) ++ ++- PDO_Firebird: ++ . Fixed #76448: Stack buffer overflow in firebird_info_cb. (CVE-2021-21704) ++ (cmb) ++ . Fixed #76449: SIGSEGV in firebird_handle_doer. (CVE-2021-21704) (cmb) ++ . Fixed #76450: SIGSEGV in firebird_stmt_execute. (CVE-2021-21704) (cmb) ++ . Fixed #76452: Crash while parsing blob data in firebird_fetch_blob. ++ (CVE-2021-21704) (cmb) ++ + Backported from 7.3.28 + + - Imap: +-- +2.31.1 + |