Vulnerabilities > CVE-2016-1762 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2019 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(93145);
  script_version("2.6");
  script_cvs_date("Date: 2019/04/11 17:23:06");

  script_cve_id("CVE-2016-1762", "CVE-2016-1833", "CVE-2016-1834", "CVE-2016-1835", "CVE-2016-1836", "CVE-2016-1837", "CVE-2016-1838", "CVE-2016-1839", "CVE-2016-1840", "CVE-2016-3627", "CVE-2016-3705", "CVE-2016-4449", "CVE-2016-4483");

  script_name(english:"FreeBSD : libxml2 -- multiple vulnerabilities (e195679d-045b-4953-bb33-be0073ba2ac6)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Daniel Veillard reports :

More format string warnings with possible format string vulnerability
(David Kilzer)

Avoid building recursive entities (Daniel Veillard)

Heap-based buffer overread in htmlCurrentChar (Pranjal Jumde)

Heap-based buffer-underreads due to xmlParseName (David Kilzer)

Heap use-after-free in xmlSAX2AttributeNs (Pranjal Jumde)

Heap use-after-free in htmlParsePubidLiteral and htmlParseSystemiteral
(Pranjal Jumde)

Fix some format string warnings with possible format string
vulnerability (David Kilzer)

Detect change of encoding when parsing HTML names (Hugh Davenport)

Fix inappropriate fetch of entities content (Daniel Veillard)

Bug 759398: Heap use-after-free in xmlDictComputeFastKey (Pranjal
Jumde)

Bug 758605: Heap-based buffer overread in xmlDictAddString (Pranjal
Jumde)

Bug 758588: Heap-based buffer overread in
xmlParserPrintFileContextInternal (David Kilzer)

Bug 757711: heap-buffer-overflow in xmlFAParsePosCharGroup (Pranjal
Jumde)

Add missing increments of recursion depth counter to XML parser.
(Peter Simons)

Fix NULL pointer deref in XPointer range-to"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://mail.gnome.org/archives/xml/2016-May/msg00023.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.gnome.org/show_bug.cgi?id=759398"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.gnome.org/show_bug.cgi?id=758605"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.gnome.org/show_bug.cgi?id=758588"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.gnome.org/show_bug.cgi?id=757711"
  );
  # https://git.gnome.org/browse/libxml2/patch/?id=d8083bf77955b7879c1290f0c0a24ab8cc70f7fb
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?96b5bf04"
  );
  # https://vuxml.freebsd.org/freebsd/e195679d-045b-4953-bb33-be0073ba2ac6.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?9ec29647"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:libxml2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/08/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/08/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"libxml2<2.9.4")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2016:1538-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(91656);
  script_version("2.7");
  script_cvs_date("Date: 2019/09/11 11:22:13");

  script_cve_id("CVE-2015-8806", "CVE-2016-1762", "CVE-2016-1833", "CVE-2016-1834", "CVE-2016-1835", "CVE-2016-1837", "CVE-2016-1838", "CVE-2016-1839", "CVE-2016-1840", "CVE-2016-2073", "CVE-2016-3705", "CVE-2016-4447", "CVE-2016-4448", "CVE-2016-4449", "CVE-2016-4483");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2016:1538-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for libxml2 fixes the following security issues :

  - CVE-2016-2073, CVE-2015-8806, CVE-2016-1839: A
    Heap-buffer overread was fixed in libxml2/dict.c
    [bsc#963963, bsc#965283, bsc#981114].

  - CVE-2016-4483: Code was added to avoid an out of bound
    access when serializing malformed strings [bsc#978395].

  - CVE-2016-1762: Fixed a heap-based buffer overread in
    xmlNextChar [bsc#981040].

  - CVE-2016-1834: Fixed a heap-buffer-overflow in
    xmlStrncat [bsc#981041].

  - CVE-2016-1833: Fixed a heap-based buffer overread in
    htmlCurrentChar [bsc#981108].

  - CVE-2016-1835: Fixed a heap use-after-free in
    xmlSAX2AttributeNs [bsc#981109].

  - CVE-2016-1837: Fixed a heap use-after-free in
    htmlParsePubidLiteral and htmlParseSystemiteral
    [bsc#981111].

  - CVE-2016-1838: Fixed a heap-based buffer overread in
    xmlParserPrintFileContextInternal [bsc#981112].

  - CVE-2016-1840: Fixed a heap-buffer-overflow in
    xmlFAParsePosCharGroup [bsc#981115].

  - CVE-2016-4447: Fixed a heap-based buffer-underreads due
    to xmlParseName [bsc#981548].

  - CVE-2016-4448: Fixed some format string warnings with
    possible format string vulnerability [bsc#981549],

  - CVE-2016-4449: Fixed inappropriate fetch of entities
    content [bsc#981550].

  - CVE-2016-3705: Fixed missing increment of recursion
    counter.

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=963963"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=965283"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=978395"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981040"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981041"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981108"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981109"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981111"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981112"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981114"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981115"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981548"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981549"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981550"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8806/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1762/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1833/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1834/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1835/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1837/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1838/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1839/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-1840/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-2073/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-3705/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4447/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4448/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4449/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-4483/"
  );
  # https://www.suse.com/support/update/announcement/2016/suse-su-20161538-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4955850f"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP1 :

zypper in -t patch SUSE-SLE-SDK-12-SP1-2016-915=1

SUSE Linux Enterprise Software Development Kit 12 :

zypper in -t patch SUSE-SLE-SDK-12-2016-915=1

SUSE Linux Enterprise Server 12-SP1 :

zypper in -t patch SUSE-SLE-SERVER-12-SP1-2016-915=1

SUSE Linux Enterprise Server 12 :

zypper in -t patch SUSE-SLE-SERVER-12-2016-915=1

SUSE Linux Enterprise Desktop 12-SP1 :

zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2016-915=1

SUSE Linux Enterprise Desktop 12 :

zypper in -t patch SUSE-SLE-DESKTOP-12-2016-915=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libxml2-2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libxml2-2-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libxml2-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libxml2-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libxml2-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python-libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python-libxml2-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python-libxml2-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/17");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0/1", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP0/1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"1", reference:"libxml2-2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libxml2-2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libxml2-debugsource-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libxml2-tools-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libxml2-tools-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"python-libxml2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"python-libxml2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"python-libxml2-debugsource-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libxml2-2-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libxml2-2-debuginfo-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"libxml2-2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"libxml2-2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"libxml2-debugsource-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"libxml2-tools-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"libxml2-tools-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"python-libxml2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"python-libxml2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"python-libxml2-debugsource-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"libxml2-2-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"libxml2-2-debuginfo-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libxml2-2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libxml2-2-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libxml2-2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libxml2-2-debuginfo-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libxml2-debugsource-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libxml2-tools-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libxml2-tools-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"python-libxml2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"python-libxml2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"python-libxml2-debugsource-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libxml2-2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libxml2-2-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libxml2-2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libxml2-2-debuginfo-32bit-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libxml2-debugsource-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libxml2-tools-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libxml2-tools-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"python-libxml2-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"python-libxml2-debuginfo-2.9.1-24.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"python-libxml2-debugsource-2.9.1-24.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-503-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(91472);
  script_version("2.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12");

  script_cve_id("CVE-2015-8806", "CVE-2016-1762", "CVE-2016-1833", "CVE-2016-1834", "CVE-2016-1835", "CVE-2016-1837", "CVE-2016-1838", "CVE-2016-1839", "CVE-2016-1840", "CVE-2016-2073", "CVE-2016-3627", "CVE-2016-3705", "CVE-2016-4447", "CVE-2016-4449", "CVE-2016-4483");

  script_name(english:"Debian DLA-503-1 : libxml2 security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities were discovered in libxml2, a library
providing support to read, modify and write XML and HTML files. A
remote attacker could provide a specially crafted XML or HTML file
that, when processed by an application using libxml2, would cause a
denial of service against the application, or potentially the
execution of arbitrary code with the privileges of the user running
the application.

For Debian 7 'Wheezy', these problems have been fixed in version
2.8.0+dfsg1-7+wheezy6.

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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2016/06/msg00004.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/libxml2"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libxml2-utils-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-libxml2-dbg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/06");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"libxml2", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;
if (deb_check(release:"7.0", prefix:"libxml2-dbg", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;
if (deb_check(release:"7.0", prefix:"libxml2-dev", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;
if (deb_check(release:"7.0", prefix:"libxml2-doc", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;
if (deb_check(release:"7.0", prefix:"libxml2-utils", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;
if (deb_check(release:"7.0", prefix:"libxml2-utils-dbg", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;
if (deb_check(release:"7.0", prefix:"python-libxml2", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;
if (deb_check(release:"7.0", prefix:"python-libxml2-dbg", reference:"2.8.0+dfsg1-7+wheezy6")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2016:1292 and 
# Oracle Linux Security Advisory ELSA-2016-1292 respectively.
#

include("compat.inc");

if (description)
{
  script_id(91797);
  script_version("2.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/15");

  script_cve_id("CVE-2016-1762", "CVE-2016-1833", "CVE-2016-1834", "CVE-2016-1835", "CVE-2016-1836", "CVE-2016-1837", "CVE-2016-1838", "CVE-2016-1839", "CVE-2016-1840", "CVE-2016-3627", "CVE-2016-3705", "CVE-2016-4447", "CVE-2016-4448", "CVE-2016-4449");
  script_xref(name:"RHSA", value:"2016:1292");

  script_name(english:"Oracle Linux 6 / 7 : libxml2 (ELSA-2016-1292)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2016:1292 :

An update for libxml2 is now available for Red Hat Enterprise Linux 6
and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

[Updated 18 July 2016] This advisory has been updated to push packages
into the Red Hat Enterprise Linux 6 Desktop channels. The packages
included in this revised update have not been changed in any way from
the packages included in the original advisory.

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

Security Fix(es) :

A heap-based buffer overflow flaw was found in the way libxml2 parsed
certain crafted XML input. A remote attacker could provide a specially
crafted XML file that, when opened in an application linked against
libxml2, would cause the application to crash or execute arbitrary
code with the permissions of the user running the application.
(CVE-2016-1834, CVE-2016-1840)

Multiple denial of service flaws were found in libxml2. A remote
attacker could provide a specially crafted XML file that, when
processed by an application using libxml2, could cause that
application to crash. (CVE-2016-1762, CVE-2016-1833, CVE-2016-1835,
CVE-2016-1836, CVE-2016-1837, CVE-2016-1838, CVE-2016-1839,
CVE-2016-3627, CVE-2016-3705, CVE-2016-4447, CVE-2016-4448,
CVE-2016-4449)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2016-June/006135.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2016-June/006139.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libxml2 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-4448");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libxml2-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:libxml2-static");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:7");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/03/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^(6|7)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 6 / 7", "Oracle Linux " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL6", reference:"libxml2-2.7.6-21.0.1.el6_8.1", el_string:"el6_8")) flag++;
if (rpm_check(release:"EL6", reference:"libxml2-devel-2.7.6-21.0.1.el6_8.1", el_string:"el6_8")) flag++;
if (rpm_check(release:"EL6", reference:"libxml2-python-2.7.6-21.0.1.el6_8.1", el_string:"el6_8")) flag++;
if (rpm_check(release:"EL6", reference:"libxml2-static-2.7.6-21.0.1.el6_8.1", el_string:"el6_8")) flag++;

if (rpm_check(release:"EL7", cpu:"x86_64", reference:"libxml2-2.9.1-6.0.1.el7_2.3", el_string:"el7_2")) flag++;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"libxml2-devel-2.9.1-6.0.1.el7_2.3", el_string:"el7_2")) flag++;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"libxml2-python-2.9.1-6.0.1.el7_2.3", el_string:"el7_2")) flag++;
if (rpm_check(release:"EL7", cpu:"x86_64", reference:"libxml2-static-2.9.1-6.0.1.el7_2.3", el_string:"el7_2")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2 / libxml2-devel / libxml2-python / libxml2-static");
}