99 lines
3.7 KiB
Diff
99 lines
3.7 KiB
Diff
|
From 9b226a94a44d53ca8f740e9807f8236a8bb7dfc3 Mon Sep 17 00:00:00 2001
|
|||
|
|
From: Roland Shoemaker <bracewell@google.com>
|
|||
|
|
Date: Wed, 10 May 2023 16:37:48 +0800
|
|||
|
|
Subject: [PATCH 2/3] [Backport] html/template: handle all JS whitespace
|
|||
|
|
characters
|
|||
|
|
MIME-Version: 1.0
|
|||
|
|
Content-Type: text/plain; charset=UTF-8
|
|||
|
|
Content-Transfer-Encoding: 8bit
|
|||
|
|
|
|||
|
|
Offering: Cloud Core Network
|
|||
|
|
CVE: CVE-2023-24540
|
|||
|
|
Reference: https://go-review.googlesource.com/c/go/+/491355
|
|||
|
|
|
|||
|
|
Rather than just a small set. Character class as defined by \s [0].
|
|||
|
|
|
|||
|
|
Thanks to Juho Nurminen of Mattermost for reporting this.
|
|||
|
|
|
|||
|
|
For #59721
|
|||
|
|
Fixes #59813
|
|||
|
|
Fixes CVE-2023-24540
|
|||
|
|
|
|||
|
|
[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes
|
|||
|
|
|
|||
|
|
Change-Id: I56d4fa1ef08125b417106ee7dbfb5b0923b901ba
|
|||
|
|
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1821459
|
|||
|
|
Reviewed-by: Julie Qiu <julieqiu@google.com>
|
|||
|
|
Run-TryBot: Roland Shoemaker <bracewell@google.com>
|
|||
|
|
Reviewed-by: Damien Neil <dneil@google.com>
|
|||
|
|
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1851497
|
|||
|
|
Run-TryBot: Damien Neil <dneil@google.com>
|
|||
|
|
Reviewed-by: Roland Shoemaker <bracewell@google.com>
|
|||
|
|
Reviewed-on: https://go-review.googlesource.com/c/go/+/491355
|
|||
|
|
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
|
|||
|
|
Reviewed-by: Carlos Amedee <carlos@golang.org>
|
|||
|
|
TryBot-Bypass: Carlos Amedee <carlos@golang.org>
|
|||
|
|
Run-TryBot: Carlos Amedee <carlos@golang.org>
|
|||
|
|
|
|||
|
|
Signed-off-by: Li Bi Chen libichen@huawei.com
|
|||
|
|
---
|
|||
|
|
src/html/template/js.go | 8 +++++++-
|
|||
|
|
src/html/template/js_test.go | 11 +++++++----
|
|||
|
|
2 files changed, 14 insertions(+), 5 deletions(-)
|
|||
|
|
|
|||
|
|
diff --git a/src/html/template/js.go b/src/html/template/js.go
|
|||
|
|
index b888eaf8b7..35994f076e 100644
|
|||
|
|
--- a/src/html/template/js.go
|
|||
|
|
+++ b/src/html/template/js.go
|
|||
|
|
@@ -13,6 +13,11 @@ import (
|
|||
|
|
"unicode/utf8"
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
+// jsWhitespace contains all of the JS whitespace characters, as defined
|
|||
|
|
+// by the \s character class.
|
|||
|
|
+// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_expressions/Character_classes.
|
|||
|
|
+const jsWhitespace = "\f\n\r\t\v\u0020\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000\ufeff"
|
|||
|
|
+
|
|||
|
|
// nextJSCtx returns the context that determines whether a slash after the
|
|||
|
|
// given run of tokens starts a regular expression instead of a division
|
|||
|
|
// operator: / or /=.
|
|||
|
|
@@ -26,7 +31,8 @@ import (
|
|||
|
|
// JavaScript 2.0 lexical grammar and requires one token of lookbehind:
|
|||
|
|
// https://www.mozilla.org/js/language/js20-2000-07/rationale/syntax.html
|
|||
|
|
func nextJSCtx(s []byte, preceding jsCtx) jsCtx {
|
|||
|
|
- s = bytes.TrimRight(s, "\t\n\f\r \u2028\u2029")
|
|||
|
|
+ // Trim all JS whitespace characters
|
|||
|
|
+ s = bytes.TrimRight(s, jsWhitespace)
|
|||
|
|
if len(s) == 0 {
|
|||
|
|
return preceding
|
|||
|
|
}
|
|||
|
|
diff --git a/src/html/template/js_test.go b/src/html/template/js_test.go
|
|||
|
|
index 7d963ae6f1..de9ef28410 100644
|
|||
|
|
--- a/src/html/template/js_test.go
|
|||
|
|
+++ b/src/html/template/js_test.go
|
|||
|
|
@@ -81,14 +81,17 @@ func TestNextJsCtx(t *testing.T) {
|
|||
|
|
{jsCtxDivOp, "0"},
|
|||
|
|
// Dots that are part of a number are div preceders.
|
|||
|
|
{jsCtxDivOp, "0."},
|
|||
|
|
+ // Some JS interpreters treat NBSP as a normal space, so
|
|||
|
|
+ // we must too in order to properly escape things.
|
|||
|
|
+ {jsCtxRegexp, "=\u00A0"},
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
for _, test := range tests {
|
|||
|
|
- if nextJSCtx([]byte(test.s), jsCtxRegexp) != test.jsCtx {
|
|||
|
|
- t.Errorf("want %s got %q", test.jsCtx, test.s)
|
|||
|
|
+ if ctx := nextJSCtx([]byte(test.s), jsCtxRegexp); ctx != test.jsCtx {
|
|||
|
|
+ t.Errorf("%q: want %s got %s", test.s, test.jsCtx, ctx)
|
|||
|
|
}
|
|||
|
|
- if nextJSCtx([]byte(test.s), jsCtxDivOp) != test.jsCtx {
|
|||
|
|
- t.Errorf("want %s got %q", test.jsCtx, test.s)
|
|||
|
|
+ if ctx := nextJSCtx([]byte(test.s), jsCtxDivOp); ctx != test.jsCtx {
|
|||
|
|
+ t.Errorf("%q: want %s got %s", test.s, test.jsCtx, ctx)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
--
|
|||
|
|
2.33.0
|
|||
|
|
|