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Test ID:1.3.6.1.4.1.25623.1.0.892369
Category:Debian Local Security Checks
Title:Debian LTS: Security Advisory for libxml2 (DLA-2369-1)
Summary:The remote host is missing an update for the 'libxml2'; package(s) announced via the DLA-2369-1 advisory.
Description:Summary:
The remote host is missing an update for the 'libxml2'
package(s) announced via the DLA-2369-1 advisory.

Vulnerability Insight:
Several security vulnerabilities were corrected in libxml2, the GNOME
XML library.

CVE-2017-8872

Global buffer-overflow in the htmlParseTryOrFinish function.

CVE-2017-18258

The xz_head function in libxml2 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-2018-14404

A NULL pointer dereference vulnerability exists in the
xpath.c:xmlXPathCompOpEval() function of libxml2 when parsing an
invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case.
Applications processing untrusted XSL format inputs may be
vulnerable to a denial of service attack.

CVE-2018-14567

If the option --with-lzma is used, allows remote attackers to cause
a denial of service (infinite loop) via a crafted XML file.

CVE-2019-19956

The xmlParseBalancedChunkMemoryRecover function has a memory leak
related to newDoc->oldNs.

CVE-2019-20388

A memory leak was found in the xmlSchemaValidateStream function of
libxml2. Applications that use this library may be vulnerable to
memory not being freed leading to a denial of service.

CVE-2020-7595

Infinite loop in xmlStringLenDecodeEntities can cause a denial of
service.

CVE-2020-24977

Out-of-bounds read restricted to xmllint --htmlout.

Affected Software/OS:
'libxml2' package(s) on Debian Linux.

Solution:
For Debian 9 stretch, these problems have been fixed in version
2.9.4+dfsg1-2.2+deb9u3.

We recommend that you upgrade your libxml2 packages.

CVSS Score:
6.4

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2017-8872
https://bugzilla.gnome.org/show_bug.cgi?id=775200
https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
Common Vulnerability Exposure (CVE) ID: CVE-2020-7595
https://security.netapp.com/advisory/ntap-20200702-0005/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5R55ZR52RMBX24TQTWHCIWKJVRV6YAWI/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/545SPOI3ZPPNPX4TFRIVE4JVRTJRKULL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDPF3AAVKUAKDYFMFKSIQSVVS3EEFPQH/
https://gitlab.gnome.org/GNOME/libxml2/commit/0e1a49c89076
https://www.oracle.com/security-alerts/cpujul2020.html
SuSE Security Announcement: openSUSE-SU-2020:0681 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00047.html
https://usn.ubuntu.com/4274-1/
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