import UBI python-jwcrypto-1.5.6-2.el9
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.gitignore
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SOURCES/jwcrypto-0.8.tar.gz
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SOURCES/jwcrypto-1.5.6.tar.gz
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@ -1 +1 @@
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038ee5faf896548477c0b57c3cacb92add36e550 SOURCES/jwcrypto-0.8.tar.gz
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e3fdb8f42c60e947cbe58346d086850d915a2b60 SOURCES/jwcrypto-1.5.6.tar.gz
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@ -1,74 +0,0 @@
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From 90477a3b6e73da69740e00b8161f53fea19b831f Mon Sep 17 00:00:00 2001
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From: Simo Sorce <simo@redhat.com>
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Date: Tue, 5 Mar 2024 16:57:17 -0500
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Subject: [PATCH] Address potential DoS with high compression ratio
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Fixes CVE-2024-28102
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Signed-off-by: Simo Sorce <simo@redhat.com>
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---
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jwcrypto/jwe.py | 7 +++++++
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jwcrypto/tests.py | 26 ++++++++++++++++++++++++++
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2 files changed, 33 insertions(+)
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diff --git a/jwcrypto/jwe.py b/jwcrypto/jwe.py
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index 9412881..5df500b 100644
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--- a/jwcrypto/jwe.py
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+++ b/jwcrypto/jwe.py
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@@ -10,5 +10,8 @@
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from jwcrypto.jwa import JWA
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+# Limit the amount of data we are willing to decompress by default.
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+default_max_compressed_size = 256 * 1024
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+
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# RFC 7516 - 4.1
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# name: (description, supported?)
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@@ -387,6 +387,10 @@ def _decrypt(self, key, ppe):
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compress = jh.get('zip', None)
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if compress == 'DEF':
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+ if len(data) > default_max_compressed_size:
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+ raise InvalidJWEData(
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+ 'Compressed data exceeds maximum allowed'
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+ 'size' + f' ({default_max_compressed_size})')
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self.plaintext = zlib.decompress(data, -zlib.MAX_WBITS)
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elif compress is None:
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self.plaintext = data
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diff --git a/jwcrypto/tests.py b/jwcrypto/tests.py
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index bb2ff10..59049f8 100644
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--- a/jwcrypto/tests.py
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+++ b/jwcrypto/tests.py
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@@ -1526,6 +1526,32 @@ def test_pbes2_hs256_aeskw_custom_params(self):
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token.deserialize(jwt=e)
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json_decode(token.claims)
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+ def test_jwe_decompression_max(self):
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+ key = jwk.JWK(kty='oct', k=base64url_encode(b'A' * (128 // 8)))
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+ payload = '{"u": "' + "u" * 400000000 + '", "uu":"' \
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+ + "u" * 400000000 + '"}'
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+ protected_header = {
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+ "alg": "A128KW",
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+ "enc": "A128GCM",
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+ "typ": "JWE",
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+ "zip": "DEF",
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+ }
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+ enc = jwe.JWE(payload.encode('utf-8'),
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+ recipient=key,
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+ protected=protected_header).serialize(compact=True)
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+ with self.assertRaises(jwe.InvalidJWEData):
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+ check = jwe.JWE()
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+ check.deserialize(enc)
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+ check.decrypt(key)
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+
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+ defmax = jwe.default_max_compressed_size
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+ jwe.default_max_compressed_size = 1000000000
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+ # ensure we can eraise the limit and decrypt
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+ check = jwe.JWE()
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+ check.deserialize(enc)
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+ check.decrypt(key)
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+ jwe.default_max_compressed_size = defmax
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+
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class JWATests(unittest.TestCase):
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def test_jwa_create(self):
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40
SOURCES/0001-ignore-deprecated-annotation.patch
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40
SOURCES/0001-ignore-deprecated-annotation.patch
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diff -Naur jwcrypto-1.5.6/jwcrypto/jwk.py jwcrypto-1.5.6-new/jwcrypto/jwk.py
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--- jwcrypto-1.5.6/jwcrypto/jwk.py 2024-02-07 13:52:39.000000000 -0300
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+++ jwcrypto-1.5.6-new/jwcrypto/jwk.py 2024-06-12 13:06:28.553972422 -0300
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@@ -11,7 +11,15 @@
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from cryptography.hazmat.primitives.asymmetric import ec
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from cryptography.hazmat.primitives.asymmetric import rsa
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-from typing_extensions import deprecated
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+try:
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+ from typing_extensions import deprecated
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+except ImportError:
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+ def deprecated(_fn, *args):
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+ def inner(func):
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+ return func
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+
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+ return inner
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+
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from jwcrypto.common import JWException
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from jwcrypto.common import base64url_decode, base64url_encode
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diff -Naur jwcrypto-1.5.6/jwcrypto/jwt.py jwcrypto-1.5.6-new/jwcrypto/jwt.py
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--- jwcrypto-1.5.6/jwcrypto/jwt.py 2024-02-07 13:52:39.000000000 -0300
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+++ jwcrypto-1.5.6-new/jwcrypto/jwt.py 2024-06-12 13:26:48.534696766 -0300
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@@ -4,7 +4,15 @@
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import time
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import uuid
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-from typing_extensions import deprecated
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+try:
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+ from typing_extensions import deprecated
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+except ImportError:
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+ def deprecated(*args):
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+ def inner(func):
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+ return func
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+
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+ return inner
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+
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from jwcrypto.common import JWException, JWKeyNotFound
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from jwcrypto.common import json_decode, json_encode
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@ -12,18 +12,21 @@
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%bcond_without python2
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%endif
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# Disable auto-generation of python dependencies.
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%{?python_disable_dependency_generator}
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%global srcname jwcrypto
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Name: python-%{srcname}
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Version: 0.8
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Release: 5%{?dist}
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Version: 1.5.6
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Release: 2%{?dist}
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Summary: Implements JWK, JWS, JWE specifications using python-cryptography
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License: LGPLv3+
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URL: https://github.com/latchset/%{srcname}
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Source0: https://github.com/latchset/%{srcname}/releases/download/v%{version}/%{srcname}-%{version}.tar.gz
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Patch1: 0001-Address-potential-DoS-with-high-compression-ratio_rhel#28698.patch
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Patch0001: 0001-ignore-deprecated-annotation.patch
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BuildArch: noarch
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%if 0%{?with_python2}
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@ -36,7 +39,7 @@ BuildRequires: python2-pytest
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%if 0%{?with_python3}
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BuildRequires: python%{python3_pkgversion}-devel
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BuildRequires: python%{python3_pkgversion}-setuptools
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BuildRequires: python%{python3_pkgversion}-cryptography >= 1.5
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BuildRequires: python%{python3_pkgversion}-cryptography >= 2.3
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BuildRequires: python%{python3_pkgversion}-pytest
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%endif
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@ -58,7 +61,7 @@ Implements JWK, JWS, JWE specifications using python-cryptography
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%if 0%{?with_python3}
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%package -n python%{python3_pkgversion}-%{srcname}
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Summary: Implements JWK, JWS, JWE specifications using python-cryptography
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Requires: python%{python3_pkgversion}-cryptography >= 1.5
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Requires: python%{python3_pkgversion}-cryptography >= 2.3
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%{?python_provide:%python_provide python%{python3_pkgversion}-%{srcname}}
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%description -n python%{python3_pkgversion}-%{srcname}
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@ -69,7 +72,10 @@ Implements JWK, JWS, JWE specifications using python-cryptography
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%prep
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%setup -q -n %{srcname}-%{version}
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%autopatch -p 1
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for p in %patches; do
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%__patch -p1 -i $p
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done
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%build
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%if 0%{?with_python2}
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@ -125,6 +131,14 @@ rm -rf %{buildroot}%{python3_sitelib}/%{srcname}/__pycache__/tests{,-cookbook}.*
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%changelog
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* Fri Aug 09 2024 Rafael Jeffman <rjeffman@redhat.com> - 1.5.6-2
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- Disable auto-generation of dependencies
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Related: RHEL-34809
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* Tue Jun 18 2024 Rafael Jeffman <rjeffman@redhat.com> - 1.5.6-1
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- Rebase to version 1.5.6
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Resolve: RHEL-34809
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* Thu Apr 04 2024 Rafael Jeffman <rjeffman@redhat.com> - 0.8-5
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- Address potential DoS with high compression ratio
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Resolves: RHEL-28698
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