diff options
Diffstat (limited to 'poky/meta/recipes-devtools/python/python3/CVE-2019-20907.patch')
-rw-r--r-- | poky/meta/recipes-devtools/python/python3/CVE-2019-20907.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/poky/meta/recipes-devtools/python/python3/CVE-2019-20907.patch b/poky/meta/recipes-devtools/python/python3/CVE-2019-20907.patch new file mode 100644 index 0000000000..a2e72372dd --- /dev/null +++ b/poky/meta/recipes-devtools/python/python3/CVE-2019-20907.patch @@ -0,0 +1,44 @@ +From a06a6bf4e67a50561f6d6fb33534df1d3035ea34 Mon Sep 17 00:00:00 2001 +From: Rishi <rishi_devan@mail.com> +Date: Wed, 15 Jul 2020 13:51:00 +0200 +Subject: [PATCH] bpo-39017: Avoid infinite loop in the tarfile module + (GH-21454) + +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> + +Removed testing 'recursion.tar' tar file due to binary data + +Upstream-Status: Backport [https://github.com/python/cpython/commit/c55479556db015f48fc8bbca17f64d3e65598559] +CVE: CVE-2019-20907 +Signed-off-by: Andrej Valek <andrej.valek@siemens.com> +--- + Lib/tarfile.py | 2 ++ + .../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 d31b9cbb51d65..7a69e1b1aa544 100755 +--- a/Lib/tarfile.py ++++ b/Lib/tarfile.py +@@ -1241,6 +1241,8 @@ 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/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). |