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Important: libxml2

Description

**Issue Overview:** A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application. (CVE-2018-14404) Use after free in libxml2 before 2.9.5, as used in Google Chrome prior to 63.0.3239.84 and other products, allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (CVE-2017-15412) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash. (CVE-2015-8035) libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251. (CVE-2018-14567) The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file. (CVE-2017-18258) Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function. (CVE-2016-5131) **Affected Packages:** libxml2 **Issue Correction:** Run _yum update libxml2_ to update your system. **New Packages:** aarch64:     libxml2-2.9.1-6.amzn2.4.1.aarch64     libxml2-devel-2.9.1-6.amzn2.4.1.aarch64     libxml2-static-2.9.1-6.amzn2.4.1.aarch64     libxml2-python-2.9.1-6.amzn2.4.1.aarch64     libxml2-debuginfo-2.9.1-6.amzn2.4.1.aarch64 i686:     libxml2-2.9.1-6.amzn2.4.1.i686     libxml2-devel-2.9.1-6.amzn2.4.1.i686     libxml2-static-2.9.1-6.amzn2.4.1.i686     libxml2-python-2.9.1-6.amzn2.4.1.i686     libxml2-debuginfo-2.9.1-6.amzn2.4.1.i686 src:     libxml2-2.9.1-6.amzn2.4.1.src x86_64:     libxml2-2.9.1-6.amzn2.4.1.x86_64     libxml2-devel-2.9.1-6.amzn2.4.1.x86_64     libxml2-static-2.9.1-6.amzn2.4.1.x86_64     libxml2-python-2.9.1-6.amzn2.4.1.x86_64     libxml2-debuginfo-2.9.1-6.amzn2.4.1.x86_64


Affected Package


OS OS Version Package Name Package Version
Amazon Linux 2 libxml2 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-devel 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-static 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-python 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-debuginfo 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-devel 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-static 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-python 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-debuginfo 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-devel 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-static 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-python 2.9.1-6.amzn2.4.1
Amazon Linux 2 libxml2-debuginfo 2.9.1-6.amzn2.4.1

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