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717462f811
Pillow through 10.1.0 allows PIL.ImageMath.eval Arbitrary Code Execution via the environment parameter, a different vulnerability than CVE-2022-22817 (which was about the expression parameter). References: https://security-tracker.debian.org/tracker/CVE-2023-50447 https://github.com/python-pillow/Pillow/blob/10.2.0/CHANGES.rst Signed-off-by: Rahul Janani Pandi <RahulJanani.Pandi@windriver.com> Signed-off-by: Armin Kuster <akuster808@gmail.com>
32 lines
968 B
Diff
32 lines
968 B
Diff
From 45c726fd4daa63236a8f3653530f297dc87b160a
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From: Eric Soroos <eric-github@soroos.net>
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Date: Fri Oct 27 11:21:18 2023 +0200
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Subject: [PATCH] python3-pillow: Don't allow __ or builtins in env dictionarys
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CVE: CVE-2023-50447
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Upstream-Status: Backport [https://github.com/python-pillow/Pillow/commit/45c726fd4daa63236a8f3653530f297dc87b160a]
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Signed-off-by: Rahul Janani Pandi <RahulJanani.Pandi@windriver.com>
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---
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src/PIL/ImageMath.py | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/src/PIL/ImageMath.py b/src/PIL/ImageMath.py
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index 71872a3fb..923a8eeae 100644
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--- a/src/PIL/ImageMath.py
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+++ b/src/PIL/ImageMath.py
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@@ -240,6 +240,10 @@ def eval(expression, _dict={}, **kw):
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args.update(_dict)
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args.update(kw)
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for k, v in args.items():
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+ if '__' in k or hasattr(__builtins__, k):
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+ msg = f"'{k}' not allowed"
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+ raise ValueError(msg)
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+
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if hasattr(v, "im"):
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args[k] = _Operand(v)
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--
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2.40.0
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