This update for libxml2 fixes the following security issues :

  - CVE-2018-9251: The xz_decomp function allowed remote     attackers to cause a denial of service (infinite loop)     via a crafted XML file that triggers     LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint     (bsc#1088279)

  - CVE-2018-14567: Prevent denial of service (infinite     loop) via a crafted XML file that triggers     LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint     (bsc#1105166)

  - CVE-2018-14404: Prevent NULL pointer dereference in the     xmlXPathCompOpEval() function when parsing an invalid     XPath expression in the XPATH_OP_AND or XPATH_OP_OR case     leading to a denial of service attack (bsc#1102046)

This update was imported from the SUSE:SLE-15:Update update project.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2020-1190 advisory.

    - Fix CVE-2015-8035 (#1595697)
    - Fix CVE-2018-14404 (#1602817)
    - Fix CVE-2017-15412 (#1729857)
    - Fix CVE-2016-5131 (#1714050)
    - Fix CVE-2017-18258 (#1579211)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

CVE-2018-14404 Fix of a NULL pointer dereference which might result in a crash and thus in a denial of service.

CVE-2018-14567 and CVE-2018-9251 Approvement in LZMA error handling which prevents an infinite loop.

CVE-2017-18258 Limit available memory to 100MB to avoid exhaustive memory consumption by malicious files.

For Debian 8 'Jessie', these problems have been fixed in version 2.9.1+dfsg1-5+deb8u7.

We recommend that you upgrade your libxml2 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for libxml2 fixes the following security issues :

  - CVE-2018-9251: The xz_decomp function allowed remote     attackers to cause a denial of service (infinite loop)     via a crafted XML file that triggers     LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint     (bsc#1088279).

  - CVE-2018-14567: Prevent denial of service (infinite     loop) via a crafted XML file that triggers     LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint     (bsc#1105166).

  - CVE-2018-14404: Prevent NULL pointer dereference in the     xmlXPathCompOpEval() function when parsing an invalid     XPath expression in the XPATH_OP_AND or XPATH_OP_OR case     leading to a denial of service attack (bsc#1102046).

  - CVE-2017-18258: The xz_head function allowed remote     attackers to cause a denial of service (memory     consumption) via a crafted LZMA file, because the     decoder functionality did not restrict memory usage to     what is required for a legitimate file (bsc#1088601).

This update was imported from the SUSE:SLE-12-SP2:Update update project.

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:1827 advisory.

  - libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c (CVE-2018-14404)

  - libxml2: infinite loop in xz_decomp function in xzlib.c (CVE-2018-9251)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This update for libxml2 fixes the following issues :

Security issue fixed :

CVE-2018-14404: Prevent NULL pointer dereference in the xmlXPathCompOpEval() function when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case leading to a denial of service attack (bsc#1102046)

Other Issue fixed: Fixed a bug related to the fix for CVE-2016-9318 which allowed xsltproc to access the internet even when --nonet was given and also was making docbook-xsl-stylesheets to have incomplete xml catalog file (bsc#1010675, bsc#1126613 and bsc#1110146).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2020-301:02 advisory.

    * libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c (CVE-2018-14404)
      * libxml2: infinite loop in xz_decomp function in xzlib.c (CVE-2018-9251)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

This update for libxml2 fixes the following security issues :

CVE-2018-9251: The xz_decomp function allowed remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint (bsc#1088279).

CVE-2018-14567: Prevent denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint (bsc#1105166).

CVE-2018-14404: Prevent NULL pointer dereference in the xmlXPathCompOpEval() function when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case leading to a denial of service attack (bsc#1102046).

CVE-2017-18258: The xz_head function allowed remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality did not restrict memory usage to what is required for a legitimate file (bsc#1088601).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:1190 advisory.

    The libxml2 library is a development toolbox providing the implementation of various XML standards.

    Security Fix(es):

    * libxml2: Use after free triggered by XPointer paths beginning with range-to (CVE-2016-5131)

    * libxml2: Use after free in xmlXPathCompOpEvalPositionalPredicate() function in xpath.c (CVE-2017-15412)

    * libxml2: DoS caused by incorrect error detection during XZ decompression (CVE-2015-8035)

    * libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c (CVE-2018-14404)

    * libxml2: Unrestricted memory usage in xz_head() function in xzlib.c (CVE-2017-18258)

    * libxml2: Infinite loop caused by incorrect error detection during LZMA decompression (CVE-2018-14567)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.8 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AOS installed on the remote host is prior to 5.18. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.18 advisory.

  - When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to     Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP     connection. If such connections are available to an attacker, they can be exploited in ways that may be     surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped     with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected     (and recommended in the security guide) that this Connector would be disabled if not required. This     vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the     web application - processing any file in the web application as a JSP Further, if the web application     allowed file upload and stored those files within the web application (or the attacker was able to control     the content of the web application by some other means) then this, along with the ability to process a     file as a JSP, made remote code execution possible. It is important to note that mitigation is only     required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth     approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to     Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP     Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading     to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
    (CVE-2020-1938)

  - rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a     certain upper-bound check, leading to a buffer overflow. (CVE-2019-17666)

  - The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-     free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,     include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can     occur with FUSE requests. (CVE-2019-11487)

  - A flaw was found in the fix for CVE-2019-11135, in the Linux upstream kernel versions before 5.5 where,     the way Intel CPUs handle speculative execution of instructions when a TSX Asynchronous Abort (TAA) error     occurs. When a guest is running on a host CPU affected by the TAA flaw (TAA_NO=0), but is not affected by     the MDS issue (MDS_NO=1), the guest was to clear the affected buffers by using a VERW instruction     mechanism. But when the MDS_NO=1 bit was exported to the guests, the guests did not use the VERW mechanism     to clear the affected buffers. This issue affects guests running on Cascade Lake CPUs and requires that     host has 'TSX' enabled. Confidentiality of data is the highest threat associated with this vulnerability.
    (CVE-2019-19338)

  - The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which     allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.
    (CVE-2015-8035)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to its self-reported version, the Nessus Network Monitor running on the remote host is prior to 6.2.2. It is, therefore, affected by multiple vulnerabilities as referenced in the TNS-2023-23 advisory. Several of the third-party components were found to contain vulnerabilities, and updated versions have been made available by the providers. Out of caution and in line with best practice, Tenable has opted to upgrade these components to address the potential impact of the issues. Nessus Network Monitor 6.2.2 updates the following components:

  - c-ares from version 1.10.0 to version 1.19.1.
  - curl from version 7.79.1 to version 8.1.2.
  - libbzip2 from version 1.0.6 to version 1.0.8.
  - libpcre from version 8.42 to version 8.44.
  - libxml2 from version 2.7.7 to version 2.11.1.
  - libxslt from version 1.1.26 to version 1.1.37.
  - libxmlsec from version 1.2.18 to version 1.2.37.
  - sqlite from version 3.27.2 to version 3.40.1.
  - jQuery Cookie from version 1.3.1 to version 1.4.1.
  - jQuery UI from version 1.13.0 to version 1.13.2.
  - OpenSSL from version 3.0.8 to version 3.0.9.

An update of the libxml2 package has been released.

The version of libxml2 installed on the remote host is prior to 2.9.1-6. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2020-1466 advisory.

    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 thanCVE-2015-8035andCVE-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)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the libxml2 packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - This library allows to manipulate XML files. It     includes support to read, modify and write XML and HTML     files. There is DTDs support this includes parsing and     validation even with complex DtDs, either at parse time     or later once the document has been modified. The     output can be a simple SAX stream or and in-memory DOM     like representations.In this case one can use the     built-in XPath and XPointer implementation to select     sub nodes or ranges. A flexible Input/Output mechanism     is available, with existing HTTP and FTP modules and     combined to an URI library.

  - Security Fixi1/4^esi1/4%0:

  - The xz_head function in xzlib.c in libxml2 before 2.9.6     allows remote attackers to cause a denial of service     i1/4^memory consumptioni1/4%0 via a crafted LZMA file,     because the decoder functionality does not restrict     memory usage to what is required for a legitimate     file.i1/4^CVE-2017-18258i1/4%0

  - A NULL pointer dereference vulnerability exists in the     xpath.c:xmlXPathCompOpEvali1/4^i1/4%0 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.i1/4^CVE-2018-14404i1/4%0

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

* libxml2: Use after free triggered by XPointer paths beginning with range-to * libxml2: Use after free in xmlXPathCompOpEvalPositionalPredicate() function in xpath.c * libxml2:
DoS caused by incorrect error detection during XZ decompression * libxml2: NULL pointer dereference in xmlXPathCompOpEval() function in xpath.c * libxml2: Unrestricted memory usage in xz_head() function in xzlib.c * libxml2: Infinite loop caused by incorrect error detection during LZMA decompression

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
123336	openSUSE Security Update : libxml2 (openSUSE-2019-785)	Nessus	SuSE Local Security Checks	2019/3/27	2024/6/10	high
180731	Oracle Linux 7 : libxml2 (ELSA-2020-1190)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/11/1	high
117811	Debian DLA-1524-1 : libxml2 security update	Nessus	Debian Local Security Checks	2018/9/28	2024/8/1	high
118115	openSUSE Security Update : libxml2 (openSUSE-2018-1149)	Nessus	SuSE Local Security Checks	2018/10/15	2024/7/31	high
145930	CentOS 8 : libxml2 (CESA-2020:1827)	Nessus	CentOS Local Security Checks	2021/2/1	2024/1/24	high
123073	SUSE SLES11 Security Update : libxml2 (SUSE-SU-2019:13985-1)	Nessus	SuSE Local Security Checks	2019/3/25	2024/6/12	medium
294177	MiracleLinux 8 : libxml2-2.9.7-7.el8 (AXSA:2020-301:02)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	high
118032	SUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2018:3081-1)	Nessus	SuSE Local Security Checks	2018/10/10	2024/7/31	high
135071	RHEL 7 : libxml2 (RHSA-2020:1190)	Nessus	Red Hat Local Security Checks	2020/4/1	2024/11/7	high
164595	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.18)	Nessus	Misc.	2022/9/1	2025/9/1	critical
177842	Nessus Network Monitor < 6.2.2 Multiple Vulnerabilities (TNS-2023-23)	Nessus	Misc.	2023/6/30	2023/7/6	critical
121893	Photon OS 1.0: Libxml2 PHSA-2018-1.0-0193	Nessus	PhotonOS Local Security Checks	2019/2/7	2022/5/23	high
118116	openSUSE Security Update : libxml2 (openSUSE-2018-1150)	Nessus	SuSE Local Security Checks	2018/10/15	2024/7/31	high
138855	Amazon Linux 2 : libxml2 (ALAS-2020-1466)	Nessus	Amazon Linux Local Security Checks	2020/7/23	2024/12/11	high
125566	EulerOS Virtualization for ARM 64 3.0.2.0 : libxml2 (EulerOS-SA-2019-1614)	Nessus	Huawei Local Security Checks	2019/5/30	2024/5/17	high
135819	Scientific Linux Security Update : libxml2 on SL7.x x86_64 (20200407)	Nessus	Scientific Linux Local Security Checks	2020/4/21	2024/3/15	high

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