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From 34e7f97cf67a8e2e0dd6675e4d82c0f8be7ad77f Mon Sep 17 00:00:00 2001
From: "Christoph M. Becker" <cmbecker69@gmx.de>
Date: Mon, 14 Jun 2021 13:22:27 +0200
Subject: [PATCH 1/7] Fix #81122: SSRF bypass in FILTER_VALIDATE_URL
We need to ensure that the password detected by parse_url() is actually
a valid password; we can re-use is_userinfo_valid() for that.
(cherry picked from commit a5538c62293fa782fcc382d0635cfc0c8b9190e3)
---
ext/filter/logical_filters.c | 4 +++-
ext/filter/tests/bug81122.phpt | 21 +++++++++++++++++++++
2 files changed, 24 insertions(+), 1 deletion(-)
create mode 100644 ext/filter/tests/bug81122.phpt
diff --git a/ext/filter/logical_filters.c b/ext/filter/logical_filters.c
index ad0956a505..7ddf44cff0 100644
--- a/ext/filter/logical_filters.c
+++ b/ext/filter/logical_filters.c
@@ -587,7 +587,9 @@ bad_url:
RETURN_VALIDATION_FAILED
}
- if (url->user != NULL && !is_userinfo_valid(url->user)) {
+ if (url->user != NULL && !is_userinfo_valid(url->user)
+ || url->pass != NULL && !is_userinfo_valid(url->pass)
+ ) {
php_url_free(url);
RETURN_VALIDATION_FAILED
diff --git a/ext/filter/tests/bug81122.phpt b/ext/filter/tests/bug81122.phpt
new file mode 100644
index 0000000000..d89d4114a5
--- /dev/null
+++ b/ext/filter/tests/bug81122.phpt
@@ -0,0 +1,21 @@
+--TEST--
+Bug #81122 (SSRF bypass in FILTER_VALIDATE_URL)
+--SKIPIF--
+<?php
+if (!extension_loaded('filter')) die("skip filter extension not available");
+?>
+--FILE--
+<?php
+$urls = [
+ "https://example.com:\\@test.com/",
+ "https://user:\\epass@test.com",
+ "https://user:\\@test.com",
+];
+foreach ($urls as $url) {
+ var_dump(filter_var($url, FILTER_VALIDATE_URL));
+}
+?>
+--EXPECT--
+bool(false)
+bool(false)
+bool(false)
--
2.31.1
From 84d1d39e26520ae131a6ac14891c836adc969ad5 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Sun, 27 Jun 2021 21:57:58 -0700
Subject: [PATCH 2/7] Fix warning
(cherry picked from commit 190013787bbc424c240413d914e3a038f974ccef)
---
ext/filter/logical_filters.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/ext/filter/logical_filters.c b/ext/filter/logical_filters.c
index 7ddf44cff0..6894fa2551 100644
--- a/ext/filter/logical_filters.c
+++ b/ext/filter/logical_filters.c
@@ -587,8 +587,8 @@ bad_url:
RETURN_VALIDATION_FAILED
}
- if (url->user != NULL && !is_userinfo_valid(url->user)
- || url->pass != NULL && !is_userinfo_valid(url->pass)
+ if ((url->user != NULL && !is_userinfo_valid(url->user))
+ || (url->pass != NULL && !is_userinfo_valid(url->pass))
) {
php_url_free(url);
RETURN_VALIDATION_FAILED
--
2.31.1
|
