ff3b5ca2c1
Fix CVE-2022-2309: NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn't be in wide-spread use, given that parsing + iterwalk would usually be replaced with the more efficient iterparse function. However, an XML converter that serialises to C14N would also be vulnerable, for example, and there are legitimate use cases for this code sequence. If untrusted input is received (also remotely) and processed via iterwalk function, a crash can be triggered. https://github.com/lxml/lxml/blob/lxml-4.9.1/CHANGES.txt Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
39 lines
1.4 KiB
Makefile
39 lines
1.4 KiB
Makefile
################################################################################
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#
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# python-lxml
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#
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################################################################################
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PYTHON_LXML_VERSION = 4.9.1
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PYTHON_LXML_SITE = https://files.pythonhosted.org/packages/70/bb/7a2c7b4f8f434aa1ee801704bf08f1e53d7b5feba3d5313ab17003477808
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PYTHON_LXML_SOURCE = lxml-$(PYTHON_LXML_VERSION).tar.gz
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# Not including the GPL, because it is used only for the test scripts.
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PYTHON_LXML_LICENSE = BSD-3-Clause, Others
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PYTHON_LXML_LICENSE_FILES = \
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LICENSES.txt \
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doc/licenses/BSD.txt \
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doc/licenses/elementtree.txt \
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src/lxml/isoschematron/resources/rng/iso-schematron.rng
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PYTHON_LXML_CPE_ID_VENDOR = lxml
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PYTHON_LXML_CPE_ID_PRODUCT = lxml
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# python-lxml can use either setuptools, or distutils as a fallback.
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# So, we use setuptools.
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PYTHON_LXML_SETUP_TYPE = setuptools
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PYTHON_LXML_DEPENDENCIES = libxml2 libxslt zlib
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HOST_PYTHON_LXML_DEPENDENCIES = host-libxml2 host-libxslt host-zlib
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# python-lxml needs these scripts in order to properly detect libxml2 and
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# libxslt compiler and linker flags
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PYTHON_LXML_BUILD_OPTS = \
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--xslt-config=$(STAGING_DIR)/usr/bin/xslt-config \
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--xml2-config=$(STAGING_DIR)/usr/bin/xml2-config
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HOST_PYTHON_LXML_BUILD_OPTS = \
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--xslt-config=$(HOST_DIR)/bin/xslt-config \
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--xml2-config=$(HOST_DIR)/bin/xml2-config
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$(eval $(python-package))
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$(eval $(host-python-package))
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