Test ID:	1.3.6.1.4.1.25623.1.1.2.2022.2478
Category:	Huawei EulerOS Local Security Checks
Title:	Huawei EulerOS: Security Advisory for python-lxml (EulerOS-SA-2022-2478)
Summary:	The remote host is missing an update for the Huawei EulerOS 'python-lxml' package(s) announced via the EulerOS-SA-2022-2478 advisory.
Description:	Summary: The remote host is missing an update for the Huawei EulerOS 'python-lxml' package(s) announced via the EulerOS-SA-2022-2478 advisory. Vulnerability Insight: 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.(CVE-2022-2309) Affected Software/OS: 'python-lxml' package(s) on Huawei EulerOS V2.0SP8. Solution: Please install the updated package(s). CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2022-2309 https://huntr.dev/bounties/8264e74f-edda-4c40-9956-49de635105ba https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/URHHSIBTPTALXMECRLAC2EVDNAFSR5NO/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HGYC6L7ENH5VEGN3YWFBYMGKX6WNS7HZ/ https://security.gentoo.org/glsa/202208-06 https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f
Copyright	Copyright (C) 2022 Greenbone AG

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