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nessusThis script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.OPENSUSE-2021-764.NASL
HistoryMay 25, 2021 - 12:00 a.m.

openSUSE Security Update : libxml2 (openSUSE-2021-764)

2021-05-2500:00:00
This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
26

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.2

Confidence

High

EPSS

0.017

Percentile

87.8%

This update for libxml2 fixes the following issues :

  • CVE-2021-3537: NULL pointer dereference in valid.c:xmlValidBuildAContentModel (bsc#1185698)

  • CVE-2021-3518: Fixed a use after free in xinclude.c:xmlXIncludeDoProcess (bsc#1185408).

  • CVE-2021-3517: Fixed a heap based buffer overflow in entities.c:xmlEncodeEntitiesInternal (bsc#1185410).

  • CVE-2021-3516: Fixed a use after free in entities.c:xmlEncodeEntitiesInternal (bsc#1185409).

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

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2021-764.
#
# The text description of this plugin is (C) SUSE LLC.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(149895);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/28");

  script_cve_id(
    "CVE-2021-3516",
    "CVE-2021-3517",
    "CVE-2021-3518",
    "CVE-2021-3537"
  );

  script_name(english:"openSUSE Security Update : libxml2 (openSUSE-2021-764)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"This update for libxml2 fixes the following issues :

  - CVE-2021-3537: NULL pointer dereference in
    valid.c:xmlValidBuildAContentModel (bsc#1185698)

  - CVE-2021-3518: Fixed a use after free in
    xinclude.c:xmlXIncludeDoProcess (bsc#1185408).

  - CVE-2021-3517: Fixed a heap based buffer overflow in
    entities.c:xmlEncodeEntitiesInternal (bsc#1185410).

  - CVE-2021-3516: Fixed a use after free in
    entities.c:xmlEncodeEntitiesInternal (bsc#1185409).

This update was imported from the SUSE:SLE-15:Update update project.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1185408");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1185409");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1185410");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1185698");
  script_set_attribute(attribute:"solution", value:
"Update the affected libxml2 packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/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:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3517");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-3518");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/05/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-2-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-2-32bit-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-2-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-devel-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-tools-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python-libxml2-python-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python2-libxml2-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python2-libxml2-python-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python3-libxml2-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python3-libxml2-python-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.2");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  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, "openSUSE");
if (release !~ "^(SUSE15\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.2", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.2", reference:"libxml2-2-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libxml2-2-debuginfo-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libxml2-debugsource-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libxml2-devel-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libxml2-tools-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"libxml2-tools-debuginfo-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"python-libxml2-python-debugsource-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"python2-libxml2-python-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"python2-libxml2-python-debuginfo-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"python3-libxml2-python-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", reference:"python3-libxml2-python-debuginfo-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"libxml2-2-32bit-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"libxml2-2-32bit-debuginfo-2.9.7-lp152.10.12.1") ) flag++;
if ( rpm_check(release:"SUSE15.2", cpu:"x86_64", reference:"libxml2-devel-32bit-2.9.7-lp152.10.12.1") ) 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, "libxml2-2 / libxml2-2-debuginfo / libxml2-debugsource / etc");
}
VendorProductVersionCPE
novellopensuselibxml2-2p-cpe:/a:novell:opensuse:libxml2-2
novellopensuselibxml2-2-32bitp-cpe:/a:novell:opensuse:libxml2-2-32bit
novellopensuselibxml2-tools-debuginfop-cpe:/a:novell:opensuse:libxml2-tools-debuginfo
novellopensusepython-libxml2-python-debugsourcep-cpe:/a:novell:opensuse:python-libxml2-python-debugsource
novellopensusepython2-libxml2-pythonp-cpe:/a:novell:opensuse:python2-libxml2-python
novellopensusepython2-libxml2-python-debuginfop-cpe:/a:novell:opensuse:python2-libxml2-python-debuginfo
novellopensusepython3-libxml2-pythonp-cpe:/a:novell:opensuse:python3-libxml2-python
novellopensusepython3-libxml2-python-debuginfop-cpe:/a:novell:opensuse:python3-libxml2-python-debuginfo
novellopensuse15.2cpe:/o:novell:opensuse:15.2
novellopensuselibxml2-2-32bit-debuginfop-cpe:/a:novell:opensuse:libxml2-2-32bit-debuginfo
Rows per page:
1-10 of 151

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.2

Confidence

High

EPSS

0.017

Percentile

87.8%