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Darsh Kelaiya
b024b3d0d2
This patch applies the reviewed upstream fix commits shown in [1] and [2]. The advisory identifying the fix is referenced in [3]. [1] https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06 [2] https://github.com/aio-libs/aiohttp/commit/dab9e879be5606682a39b9dd378900eba0afd1a4 [3] https://nvd.nist.gov/vuln/detail/CVE-2026-34514 Signed-off-by: Darsh Kelaiya <dkelaiya@cisco.com> Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>
66 lines
2.5 KiB
Diff
66 lines
2.5 KiB
Diff
From b3aca47a956826116930a59e482953cacf78830a Mon Sep 17 00:00:00 2001
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From: Sam Bull <git@sambull.org>
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Date: Sat, 21 Feb 2026 00:17:11 +0000
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Subject: [PATCH] Fix multipart injection (#12104) (#12110)
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CVE: CVE-2026-34514
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Upstream-Status: Backport [https://github.com/aio-libs/aiohttp/commit/9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06]
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(cherry picked from commit dab9e879be5606682a39b9dd378900eba0afd1a4)
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Co-authored-by: mingi jung <mingijung.grape@gmail.com>
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(cherry picked from commit 9a6ada97e2c6cf1ce31727c6c9fcea17c21f6f06)
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Signed-off-by: Darsh Kelaiya <dkelaiya@cisco.com>
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---
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aiohttp/formdata.py | 5 +++++
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tests/test_formdata.py | 16 +++++++++++-----
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2 files changed, 16 insertions(+), 5 deletions(-)
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diff --git a/aiohttp/formdata.py b/aiohttp/formdata.py
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index 2b75b3de7..c14ada176 100644
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--- a/aiohttp/formdata.py
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+++ b/aiohttp/formdata.py
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@@ -79,6 +79,11 @@ class FormData:
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raise TypeError(
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"content_type must be an instance of str. " "Got: %s" % content_type
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)
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+ if "\r" in content_type or "\n" in content_type:
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+ raise ValueError(
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+ "Newline or carriage return detected in headers. "
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+ "Potential header injection attack."
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+ )
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headers[hdrs.CONTENT_TYPE] = content_type
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self._is_multipart = True
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if content_transfer_encoding is not None:
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diff --git a/tests/test_formdata.py b/tests/test_formdata.py
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index 4bb8aa075..9e331515c 100644
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--- a/tests/test_formdata.py
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+++ b/tests/test_formdata.py
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@@ -46,12 +46,18 @@ def test_invalid_formdata_params2() -> None:
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FormData("as") # 2-char str is not allowed
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-def test_invalid_formdata_content_type() -> None:
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+@pytest.mark.parametrize("val", (0, 0.1, {}, [], b"foo"))
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+def test_invalid_type_formdata_content_type(val: object) -> None:
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form = FormData()
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- invalid_vals = [0, 0.1, {}, [], b"foo"]
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- for invalid_val in invalid_vals:
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- with pytest.raises(TypeError):
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- form.add_field("foo", "bar", content_type=invalid_val)
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+ with pytest.raises(TypeError):
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+ form.add_field("foo", "bar", content_type=val) # type: ignore[arg-type]
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+
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+
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+@pytest.mark.parametrize("val", ("\r", "\n", "a\ra\n", "a\na\r"))
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+def test_invalid_value_formdata_content_type(val: str) -> None:
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+ form = FormData()
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+ with pytest.raises(ValueError):
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+ form.add_field("foo", "bar", content_type=val)
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def test_invalid_formdata_filename() -> None:
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--
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2.44.4
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