blob: f9e3c495059ca372545c130cc611b604e2567840 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
From 45c726fd4daa63236a8f3653530f297dc87b160a Mon Sep 17 00:00:00 2001
From: Eric Soroos <eric-github@soroos.net>
Date: Fri, 27 Oct 2023 11:21:18 +0200
Subject: [PATCH] Don't allow __ or builtins in env dictionarys for
ImageMath.eval
Upstream-Status: Backport [https://github.com/python-pillow/Pillow/commit/45c726fd4daa63236a8f3653530f297dc87b160a]
CVE: CVE-2023-50447
Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
---
src/PIL/ImageMath.py | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/PIL/ImageMath.py b/src/PIL/ImageMath.py
index 392151c10..4cea3855e 100644
--- a/src/PIL/ImageMath.py
+++ b/src/PIL/ImageMath.py
@@ -261,6 +261,10 @@ def eval(expression, _dict={}, **kw):
args.update(_dict)
args.update(kw)
for k, v in list(args.items()):
+ if '__' in k or hasattr(__builtins__, k):
+ msg = f"'{k}' not allowed"
+ raise ValueError(msg)
+
if hasattr(v, "im"):
args[k] = _Operand(v)
--
2.25.1
|
