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Code Issues Projects Releases Wiki Activity

golang: Fix CVE-2023-24539

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Improper sanitization of CSS values in html/template

(From OE-Core rev: 737333d41d245154eb4b26ec8db79a2f9823c873)

Signed-off-by: Ashish Sharma <asharma@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Ashish Sharma
2023-06-06 22:12:21 +05:30
committed by Steve Sakoman
parent 09a8d85815
commit 7a5aa92590
2 changed files with 61 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta/recipes-devtools/go/go-1.14.inc
+1
View File
@@ -61,6 +61,7 @@ SRC_URI += "\
file://CVE-2023-24538-1.patch \
file://CVE-2023-24538-2.patch \
file://CVE-2023-24538-3.patch \
file://CVE-2023-24539.patch \
"
SRC_URI_append_libc-musl = " file://0009-ld-replace-glibc-dynamic-linker-with-musl.patch"
meta/recipes-devtools/go/go-1.14/CVE-2023-24539.patch
+60
View File
@@ -0,0 +1,60 @@
From 8673ca81e5340b87709db2d9749c92a3bf925df1 Mon Sep 17 00:00:00 2001
From: Roland Shoemaker <bracewell@google.com>
Date: Thu, 13 Apr 2023 15:40:44 -0700
Subject: [PATCH] html/template: disallow angle brackets in CSS values
Angle brackets should not appear in CSS contexts, as they may affect
token boundaries (such as closing a <style> tag, resulting in
injection). Instead emit filterFailsafe, matching the behavior for other
dangerous characters.
Thanks to Juho Nurminen of Mattermost for reporting this issue.
Fixes #59720
Fixes CVE-2023-24539
Change-Id: Iccc659c9a18415992b0c05c178792228e3a7bae4
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1826636
Reviewed-by: Julie Qiu <julieqiu@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/491615
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Carlos Amedee <carlos@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Upstream-Status: Backport from [https://github.com/golang/go/commit/8673ca81e5340b87709db2d9749c92a3bf925df1]
CVE: CVE-2023-24539
Signed-off-by: Ashish Sharma <asharma@mvista.com>
---
src/html/template/css.go | 2 +-
src/html/template/css_test.go | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/html/template/css.go b/src/html/template/css.go
index 890a0c6b227fe..f650d8b3e843a 100644
--- a/src/html/template/css.go
+++ b/src/html/template/css.go
@@ -238,7 +238,7 @@ func cssValueFilter(args ...any) string {
// inside a string that might embed JavaScript source.
for i, c := range b {
switch c {
- case 0, '"', '\'', '(', ')', '/', ';', '@', '[', '\\', ']', '`', '{', '}':
+ case 0, '"', '\'', '(', ')', '/', ';', '@', '[', '\\', ']', '`', '{', '}', '<', '>':
return filterFailsafe
case '-':
// Disallow <!-- or -->.
diff --git a/src/html/template/css_test.go b/src/html/template/css_test.go
index a735638b0314f..2b76256a766e9 100644
--- a/src/html/template/css_test.go
+++ b/src/html/template/css_test.go
@@ -231,6 +231,8 @@ func TestCSSValueFilter(t *testing.T) {
{`-exp\000052 ession(alert(1337))`, "ZgotmplZ"},
{`-expre\0000073sion`, "-expre\x073sion"},
{`@import url evil.css`, "ZgotmplZ"},
+ {"<", "ZgotmplZ"},
+ {">", "ZgotmplZ"},
}
for _, test := range tests {
got := cssValueFilter(test.css)