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nessusThis script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2016-1538-1.NASL
HistoryJun 17, 2016 - 12:00 a.m.

SUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2016:1538-1)

2016-06-1700:00:00
This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
26

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.036

Percentile

91.8%

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.

#%NASL_MIN_LEVEL 70300
#
# (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('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(91656);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  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) 2016-2021 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");
}

References

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.036

Percentile

91.8%