diff options
Diffstat (limited to 'lang/python/python3/patches/027-bpo-39017-Avoid-infinite-loop-in-the-tarfile-module-GH-21454-GH-21485.patch')
| -rw-r--r-- | lang/python/python3/patches/027-bpo-39017-Avoid-infinite-loop-in-the-tarfile-module-GH-21454-GH-21485.patch | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/lang/python/python3/patches/027-bpo-39017-Avoid-infinite-loop-in-the-tarfile-module-GH-21454-GH-21485.patch b/lang/python/python3/patches/027-bpo-39017-Avoid-infinite-loop-in-the-tarfile-module-GH-21454-GH-21485.patch deleted file mode 100644 index b9a5951f1..000000000 --- a/lang/python/python3/patches/027-bpo-39017-Avoid-infinite-loop-in-the-tarfile-module-GH-21454-GH-21485.patch +++ /dev/null @@ -1,59 +0,0 @@ -From 47a2955589bdb1a114d271496ff803ad73f954b8 Mon Sep 17 00:00:00 2001 -From: "Miss Islington (bot)" - <31488909+miss-islington@users.noreply.github.com> -Date: Wed, 15 Jul 2020 05:36:36 -0700 -Subject: [PATCH] bpo-39017: Avoid infinite loop in the tarfile module - (GH-21454) (#21485) - -Avoid infinite loop when reading specially crafted TAR files using the tarfile module -(CVE-2019-20907). -(cherry picked from commit 5a8d121a1f3ef5ad7c105ee378cc79a3eac0c7d4) - -Co-authored-by: Rishi <rishi_devan@mail.com> ---- - Lib/tarfile.py | 2 ++ - Lib/test/recursion.tar | Bin 0 -> 516 bytes - Lib/test/test_tarfile.py | 7 +++++++ - .../2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst | 1 + - 4 files changed, 10 insertions(+) - create mode 100644 Lib/test/recursion.tar - create mode 100644 Misc/NEWS.d/next/Library/2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst - -diff --git a/Lib/tarfile.py b/Lib/tarfile.py -index 62d22150f50da..2ea47978ff6f1 100755 ---- a/Lib/tarfile.py -+++ b/Lib/tarfile.py -@@ -1231,6 +1231,8 @@ def _proc_pax(self, tarfile): - - length, keyword = match.groups() - length = int(length) -+ if length == 0: -+ raise InvalidHeaderError("invalid header") - value = buf[match.end(2) + 1:match.start(1) + length - 1] - - # Normally, we could just use "utf-8" as the encoding and "strict" -diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py -index 4cd7d5370f58d..573be812eaa17 100644 ---- a/Lib/test/test_tarfile.py -+++ b/Lib/test/test_tarfile.py -@@ -395,6 +395,13 @@ def test_premature_end_of_archive(self): - with self.assertRaisesRegex(tarfile.ReadError, "unexpected end of data"): - tar.extractfile(t).read() - -+ def test_length_zero_header(self): -+ # bpo-39017 (CVE-2019-20907): reading a zero-length header should fail -+ # with an exception -+ with self.assertRaisesRegex(tarfile.ReadError, "file could not be opened successfully"): -+ with tarfile.open(support.findfile('recursion.tar')) as tar: -+ pass -+ - class MiscReadTestBase(CommonReadTest): - def requires_name_attribute(self): - pass -diff --git a/Misc/NEWS.d/next/Library/2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst b/Misc/NEWS.d/next/Library/2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst -new file mode 100644 -index 0000000000000..ad26676f8b856 ---- /dev/null -+++ b/Misc/NEWS.d/next/Library/2020-07-12-22-16-58.bpo-39017.x3Cg-9.rst -@@ -0,0 +1 @@ -+Avoid infinite loop when reading specially crafted TAR files using the tarfile module (CVE-2019-20907). |
