python3-setuptools: fix for CVE-2022-40897

Python Packaging Authority (PyPA) setuptools before 65.5.1 allows remote attackers
to cause a denial of service via HTML in a crafted package or custom PackageIndex
page. There is a Regular Expression Denial of Service (ReDoS) in package_index.py.

CVE: CVE-2022-40897

Upstream-Status: Backport [https://github.com/pypa/setuptools/commit/43a9c9bfa6aa626ec2a22540bea28d2ca77964be]

(From OE-Core rev: f574d8d57ff3fbc38e350e7a90913993081c4fdf)

Signed-off-by: Narpat Mali <narpat.mali@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 32 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python3-setuptools/0001-Limit-the-amount-of-whitespace-to-search-backtrack.-.patch b/meta/recipes-devtools/python/python3-setuptools/0001-Limit-the-amount-of-whitespace-to-search-backtrack.-.patch
new file mode 100644
index 0000000000..20a13da7bc
--- /dev/null
+++ b/meta/recipes-devtools/python/python3-setuptools/0001-Limit-the-amount-of-whitespace-to-search-backtrack.-.patch
@@ -0,0 +1,31 @@
+From 9e9f617a83f6593b476669030b0347d48e831c3f Mon Sep 17 00:00:00 2001
+From: Narpat Mali <narpat.mali@windriver.com>
+Date: Mon, 9 Jan 2023 14:45:05 +0000
+Subject: [PATCH] Limit the amount of whitespace to search/backtrack. Fixes
+ #3659.
+
+CVE: CVE-2022-40897
+
+Upstream-Status: Backport [https://github.com/pypa/setuptools/commit/43a9c9bfa6aa626ec2a22540bea28d2ca77964be]
+
+Signed-off-by: Narpat Mali <narpat.mali@windriver.com>
+---
+ setuptools/package_index.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/setuptools/package_index.py b/setuptools/package_index.py
+index 270e7f3..e93fcc6 100644
+--- a/setuptools/package_index.py
++++ b/setuptools/package_index.py
+@@ -197,7 +197,7 @@ def unique_values(func):
+     return wrapper
+ 
+ 
+-REL = re.compile(r"""<([^>]*\srel\s*=\s*['"]?([^'">]+)[^>]*)>""", re.I)
++REL = re.compile(r"""<([^>]*\srel\s{0,10}=\s{0,10}['"]?([^'" >]+)[^>]*)>""", re.I)
+ # this line is here to fix emacs' cruddy broken syntax highlighting
+ 
+ 
+-- 
+2.34.1
+
diff --git a/meta/recipes-devtools/python/python3-setuptools_59.5.0.bb b/meta/recipes-devtools/python/python3-setuptools_59.5.0.bb
index f2810e18d3..5f2676a04a 100644
--- a/meta/recipes-devtools/python/python3-setuptools_59.5.0.bb
+++ b/meta/recipes-devtools/python/python3-setuptools_59.5.0.bb
@@ -11,6 +11,7 @@ SRC_URI:append:class-native = " file://0001-conditionally-do-not-fetch-code-by-e
 SRC_URI += "\
     file://0001-change-shebang-to-python3.patch \
     file://0001-_distutils-sysconfig-append-STAGING_LIBDIR-python-sy.patch \
+    file://0001-Limit-the-amount-of-whitespace-to-search-backtrack.-.patch \
 "
 
 SRC_URI[sha256sum] = "d144f85102f999444d06f9c0e8c737fd0194f10f2f7e5fdb77573f6e2fa4fad0"