4ba5829313
CVE:CVE-2023-29400,CVE-2023-24539,CVE-2023-24540 Reference:https://go-review.googlesource.com/c/go/+/491615,https://go-review.googlesource.com/c/go/+/491616,https://go-review.googlesource.com/c/go/+/491617 Type:CVE Reason:fix CVE-2023-29400,CVE-2023-24539,CVE-2023-24540
99 lines
3.7 KiB
Diff
99 lines
3.7 KiB
Diff
From 9b226a94a44d53ca8f740e9807f8236a8bb7dfc3 Mon Sep 17 00:00:00 2001
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From: Roland Shoemaker <bracewell@google.com>
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Date: Wed, 10 May 2023 16:37:48 +0800
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Subject: [PATCH 2/3] [Backport] html/template: handle all JS whitespace
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characters
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Offering: Cloud Core Network
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CVE: CVE-2023-24540
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Reference: https://go-review.googlesource.com/c/go/+/491355
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Rather than just a small set. Character class as defined by \s [0].
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Thanks to Juho Nurminen of Mattermost for reporting this.
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For #59721
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Fixes #59813
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Fixes CVE-2023-24540
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[0] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions/Character_Classes
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Change-Id: I56d4fa1ef08125b417106ee7dbfb5b0923b901ba
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Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1821459
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Reviewed-by: Julie Qiu <julieqiu@google.com>
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Run-TryBot: Roland Shoemaker <bracewell@google.com>
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Reviewed-by: Damien Neil <dneil@google.com>
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Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1851497
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Run-TryBot: Damien Neil <dneil@google.com>
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Reviewed-by: Roland Shoemaker <bracewell@google.com>
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Reviewed-on: https://go-review.googlesource.com/c/go/+/491355
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Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
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Reviewed-by: Carlos Amedee <carlos@golang.org>
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TryBot-Bypass: Carlos Amedee <carlos@golang.org>
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Run-TryBot: Carlos Amedee <carlos@golang.org>
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Signed-off-by: Li Bi Chen libichen@huawei.com
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---
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src/html/template/js.go | 8 +++++++-
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src/html/template/js_test.go | 11 +++++++----
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2 files changed, 14 insertions(+), 5 deletions(-)
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diff --git a/src/html/template/js.go b/src/html/template/js.go
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index b888eaf8b7..35994f076e 100644
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--- a/src/html/template/js.go
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+++ b/src/html/template/js.go
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@@ -13,6 +13,11 @@ import (
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"unicode/utf8"
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)
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+// jsWhitespace contains all of the JS whitespace characters, as defined
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+// by the \s character class.
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+// See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_expressions/Character_classes.
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+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"
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+
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// nextJSCtx returns the context that determines whether a slash after the
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// given run of tokens starts a regular expression instead of a division
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// operator: / or /=.
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@@ -26,7 +31,8 @@ import (
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// JavaScript 2.0 lexical grammar and requires one token of lookbehind:
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// https://www.mozilla.org/js/language/js20-2000-07/rationale/syntax.html
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func nextJSCtx(s []byte, preceding jsCtx) jsCtx {
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- s = bytes.TrimRight(s, "\t\n\f\r \u2028\u2029")
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+ // Trim all JS whitespace characters
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+ s = bytes.TrimRight(s, jsWhitespace)
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if len(s) == 0 {
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return preceding
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}
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diff --git a/src/html/template/js_test.go b/src/html/template/js_test.go
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index 7d963ae6f1..de9ef28410 100644
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--- a/src/html/template/js_test.go
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+++ b/src/html/template/js_test.go
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@@ -81,14 +81,17 @@ func TestNextJsCtx(t *testing.T) {
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{jsCtxDivOp, "0"},
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// Dots that are part of a number are div preceders.
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{jsCtxDivOp, "0."},
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+ // Some JS interpreters treat NBSP as a normal space, so
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+ // we must too in order to properly escape things.
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+ {jsCtxRegexp, "=\u00A0"},
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}
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for _, test := range tests {
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- if nextJSCtx([]byte(test.s), jsCtxRegexp) != test.jsCtx {
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- t.Errorf("want %s got %q", test.jsCtx, test.s)
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+ if ctx := nextJSCtx([]byte(test.s), jsCtxRegexp); ctx != test.jsCtx {
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+ t.Errorf("%q: want %s got %s", test.s, test.jsCtx, ctx)
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}
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- if nextJSCtx([]byte(test.s), jsCtxDivOp) != test.jsCtx {
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- t.Errorf("want %s got %q", test.jsCtx, test.s)
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+ if ctx := nextJSCtx([]byte(test.s), jsCtxDivOp); ctx != test.jsCtx {
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+ t.Errorf("%q: want %s got %s", test.s, test.jsCtx, ctx)
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}
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}
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--
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2.33.0
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