Le mar. 20 janv. 2026 à 14:52, Peter Marko via lists.openembedded.org <[email protected]> a écrit :
> From: Peter Marko <[email protected]> > > Pick patch per [1]. > > [1] https://nvd.nist.gov/vuln/detail/CVE-2025-66418 > > Signed-off-by: Peter Marko <[email protected]> > Thanks for the quick update! I've taken this in my stable/kirkstone-nut branch and rebuilt a-full which succeeded : https://autobuilder.yoctoproject.org/valkyrie/?#/builders/29/builds/3097 I will include this v2 in my pull request. > --- > .../python3-urllib3/CVE-2025-66418.patch | 74 +++++++++++++++++++ > .../python/python3-urllib3_1.26.20.bb | 1 + > 2 files changed, 75 insertions(+) > create mode 100644 > meta/recipes-devtools/python/python3-urllib3/CVE-2025-66418.patch > > diff --git > a/meta/recipes-devtools/python/python3-urllib3/CVE-2025-66418.patch > b/meta/recipes-devtools/python/python3-urllib3/CVE-2025-66418.patch > new file mode 100644 > index 00000000000..b490019d877 > --- /dev/null > +++ b/meta/recipes-devtools/python/python3-urllib3/CVE-2025-66418.patch > @@ -0,0 +1,74 @@ > +From 24d7b67eac89f94e11003424bcf0d8f7b72222a8 Mon Sep 17 00:00:00 2001 > +From: Illia Volochii <[email protected]> > +Date: Fri, 5 Dec 2025 16:41:33 +0200 > +Subject: [PATCH] Merge commit from fork > + > +* Add a hard-coded limit for the decompression chain > + > +* Reuse new list > + > +CVE: CVE-2025-66418 > +Upstream-Status: Backport [ > https://github.com/urllib3/urllib3/commit/24d7b67eac89f94e11003424bcf0d8f7b72222a8 > ] > +Signed-off-by: Peter Marko <[email protected]> > +--- > + changelog/GHSA-gm62-xv2j-4w53.security.rst | 4 ++++ > + src/urllib3/response.py | 12 +++++++++++- > + test/test_response.py | 10 ++++++++++ > + 3 files changed, 25 insertions(+), 1 deletion(-) > + create mode 100644 changelog/GHSA-gm62-xv2j-4w53.security.rst > + > +diff --git a/changelog/GHSA-gm62-xv2j-4w53.security.rst > b/changelog/GHSA-gm62-xv2j-4w53.security.rst > +new file mode 100644 > +index 00000000..6646eaa3 > +--- /dev/null > ++++ b/changelog/GHSA-gm62-xv2j-4w53.security.rst > +@@ -0,0 +1,4 @@ > ++Fixed a security issue where an attacker could compose an HTTP response > with > ++virtually unlimited links in the ``Content-Encoding`` header, potentially > ++leading to a denial of service (DoS) attack by exhausting system > resources > ++during decoding. The number of allowed chained encodings is now limited > to 5. > +diff --git a/src/urllib3/response.py b/src/urllib3/response.py > +index 4ba42136..069f726c 100644 > +--- a/src/urllib3/response.py > ++++ b/src/urllib3/response.py > +@@ -135,8 +135,18 @@ class MultiDecoder(object): > + they were applied. > + """ > + > ++ # Maximum allowed number of chained HTTP encodings in the > ++ # Content-Encoding header. > ++ max_decode_links = 5 > ++ > + def __init__(self, modes): > +- self._decoders = [_get_decoder(m.strip()) for m in > modes.split(",")] > ++ encodings = [m.strip() for m in modes.split(",")] > ++ if len(encodings) > self.max_decode_links: > ++ raise DecodeError( > ++ "Too many content encodings in the chain: " > ++ f"{len(encodings)} > {self.max_decode_links}" > ++ ) > ++ self._decoders = [_get_decoder(e) for e in encodings] > + > + def flush(self): > + return self._decoders[0].flush() > +diff --git a/test/test_response.py b/test/test_response.py > +index 9592fdd9..d824ae70 100644 > +--- a/test/test_response.py > ++++ b/test/test_response.py > +@@ -295,6 +295,16 @@ class TestResponse(object): > + > + assert r.data == b"foo" > + > ++ def test_read_multi_decoding_too_many_links(self) -> None: > ++ fp = BytesIO(b"foo") > ++ with pytest.raises( > ++ DecodeError, match="Too many content encodings in the chain: > 6 > 5" > ++ ): > ++ HTTPResponse( > ++ fp, > ++ headers={"content-encoding": "gzip, deflate, br, zstd, > gzip, deflate"}, > ++ ) > ++ > + def test_body_blob(self): > + resp = HTTPResponse(b"foo") > + assert resp.data == b"foo" > diff --git a/meta/recipes-devtools/python/python3-urllib3_1.26.20.bb > b/meta/recipes-devtools/python/python3-urllib3_1.26.20.bb > index 58988e42055..1f1132d5b5d 100644 > --- a/meta/recipes-devtools/python/python3-urllib3_1.26.20.bb > +++ b/meta/recipes-devtools/python/python3-urllib3_1.26.20.bb > @@ -9,6 +9,7 @@ inherit pypi setuptools3 > > SRC_URI += " \ > file://CVE-2025-50181.patch \ > + file://CVE-2025-66418.patch \ > " > > RDEPENDS:${PN} += "\ > > > > -- Yoann Congal Smile ECS
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