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python: Apply patch for CVE-2019-20907
Incluing the patch file in-tree because the upstream patch is not
intended to apply for Python 2.
Re #94004
authored by
Christian Kauhaus
and committed by
Frederik Rietdijk
a14859c6
46ee7ddc
+27
+24
pkgs/development/interpreters/python/cpython/2.7/CVE-2019-20907.patch
+24
pkgs/development/interpreters/python/cpython/2.7/CVE-2019-20907.patch
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···
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From 5a8d121a1f3ef5ad7c105ee378cc79a3eac0c7d4 Mon Sep 17 00:00:00 2001
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From: Rishi <rishi_devan@mail.com>
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Date: Wed, 15 Jul 2020 13:51:00 +0200
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Subject: [PATCH] bpo-39017: Avoid infinite loop in the tarfile module
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(GH-21454)
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Avoid infinite loop when reading specially crafted TAR files using the tarfile module
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(CVE-2019-20907).
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---
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Lib/tarfile.py | 2 ++
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diff --git a/Lib/tarfile.py b/Lib/tarfile.py
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index e2b60532f6..6769066cab 100755
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--- a/Lib/tarfile.py
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+++ b/Lib/tarfile.py
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@@ -1249,6 +1249,8 @@ class TarInfo(object):
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length, keyword = match.groups()
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length = int(length)
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+ if length == 0:
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+ raise InvalidHeaderError("invalid header")
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value = buf[match.end(2) + 1:match.start(1) + length - 1]
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# Normally, we could just use "utf-8" as the encoding and "strict"
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pkgs/development/interpreters/python/cpython/2.7/default.nix
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pkgs/development/interpreters/python/cpython/2.7/default.nix
···
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# Backport from CPython 3.8 of a good list of tests to run for PGO.
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./profile-task.patch
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# Patch is likely to go away in the next release (if there is any)
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./CVE-2019-20907.patch
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] ++ optionals (x11Support && stdenv.isDarwin) [
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./use-correct-tcl-tk-on-darwin.patch
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] ++ optionals stdenv.isLinux [