Vulnerabilities > CVE-2017-9048 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Xmlsoft Libxml2 2.9.4

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
low complexity
xmlsoft
CWE-119
nessus
NVD
Published: 2017-05-18
Updated: 2024-11-21

Summary

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.

Vulnerable Configurations

Part Description Count
Application
Xmlsoft
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-2211.NASL
    descriptionAccording to the versions of the libxml2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - dict.c in libxml2 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via an unexpected character immediately after the
    last seen2020-05-08
    modified2019-11-08
    plugin id130673
    published2019-11-08
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130673
    titleEulerOS 2.0 SP5 : libxml2 (EulerOS-SA-2019-2211)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(130673);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/07");

  script_cve_id(
    "CVE-2015-8806",
    "CVE-2017-5969",
    "CVE-2017-8872",
    "CVE-2017-9048",
    "CVE-2017-9049",
    "CVE-2017-9050",
    "CVE-2018-14567",
    "CVE-2018-9251"
  );

  script_name(english:"EulerOS 2.0 SP5 : libxml2 (EulerOS-SA-2019-2211)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the libxml2 packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerabilities :

  - dict.c in libxml2 allows remote attackers to cause a
    denial of service (heap-based buffer over-read and
    application crash) via an unexpected character
    immediately after the '<!DOCTYPE html' substring in a
    crafted HTML document.(CVE-2015-8806)

  - libxml2 2.9.4, when used in recover mode, allows remote
    attackers to cause a denial of service (NULL pointer
    dereference) via a crafted XML document. NOTE: The
    maintainer states 'I would disagree of a CVE with the
    Recover parsing option which should only be used for
    manual recovery at least for XML
    parser.'(CVE-2017-5969)

  - The htmlParseTryOrFinish function in HTMLparser.c in
    libxml2 2.9.4 allows attackers to cause a denial of
    service (buffer over-read) or information
    disclosure.(CVE-2017-8872)

  - libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a
    stack-based buffer overflow. The function
    xmlSnprintfElementContent in valid.c is supposed to
    recursively dump the element content definition into a
    char buffer 'buf' of size 'size'. At the end of the
    routine, the function may strcat two more characters
    without checking whether the current strlen(buf) + 2 <
    size. This vulnerability causes programs that use
    libxml2, such as PHP, to crash.(CVE-2017-9048)

  - libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a
    heap-based buffer over-read in the
    xmlDictComputeFastKey function in dict.c. This
    vulnerability causes programs that use libxml2, such as
    PHP, to crash. This vulnerability exists because of an
    incomplete fix for libxml2 Bug 759398.(CVE-2017-9049)

  - libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a
    heap-based buffer over-read in the xmlDictAddString
    function in dict.c. This vulnerability causes programs
    that use libxml2, such as PHP, to crash. This
    vulnerability exists because of an incomplete fix for
    CVE-2016-1839.(CVE-2017-9050)

  - The xz_decomp function in xzlib.c in 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 than
    CVE-2015-8035.(CVE-2018-9251)

  - 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 than CVE-2015-8035 and
    CVE-2018-9251.(CVE-2018-14567)

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.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2211
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?20307672");
  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:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libxml2-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libxml2-python");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  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/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["libxml2-2.9.1-6.3.h20.eulerosv2r7",
        "libxml2-devel-2.9.1-6.3.h20.eulerosv2r7",
        "libxml2-python-2.9.1-6.3.h20.eulerosv2r7"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"5", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2");
}
  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2017-0024_LIBXML2.NASL
    descriptionAn update of the libxml2 package has been released.
    last seen2020-03-17
    modified2019-02-07
    plugin id121711
    published2019-02-07
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/121711
    titlePhoton OS 1.0: Libxml2 PHSA-2017-0024
    code
    #
# (C) Tenable Network Security, Inc.
#


# The descriptive text and package checks in this plugin were
# extracted from VMware Security Advisory PHSA-2017-0024. The text
# itself is copyright (C) VMware, Inc.


include('compat.inc');

if (description)
{
  script_id(121711);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2019/02/07");

  script_cve_id(
    "CVE-2017-9047",
    "CVE-2017-9048",
    "CVE-2017-9049",
    "CVE-2017-9050"
  );

  script_name(english:"Photon OS 1.0: Libxml2 PHSA-2017-0024");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote PhotonOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"An update of the libxml2 package has been released.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/vmware/photon/wiki/Security-Updates-54.md");
  script_set_attribute(attribute:"solution", value:
"Update the affected Linux 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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-10685");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/07/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/07/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/07");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:libxml2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:1.0");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/PhotonOS/release", "Host/PhotonOS/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/PhotonOS/release");
if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, "PhotonOS");
if (release !~ "^VMware Photon (?:Linux|OS) 1\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 1.0");

if (!get_kb_item("Host/PhotonOS/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, "PhotonOS", cpu);

flag = 0;

if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-debuginfo-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-debuginfo-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-debuginfo-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-debuginfo-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-devel-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-devel-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-devel-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-devel-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-python-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-python-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-python-2.9.4-6.ph1")) flag++;
if (rpm_check(release:"PhotonOS-1.0", reference:"libxml2-python-2.9.4-6.ph1")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2");
}
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-1454-1.NASL
    descriptionThis update for libxml2 fixes the following issues : - CVE-2017-9047, CVE-2017-9048: The function xmlSnprintfElementContent in valid.c was vulnerable to a stack-based buffer overflow (bsc#1039063, bsc#1039064) - CVE-2017-9049: The function xmlDictComputeFastKey in dict.c was vulnerable to a heap-based buffer over-read. (bsc#1039066) - CVE-2017-9050: The function xmlDictAddString was vulnerable to a heap-based buffer over-read (bsc#1039661) - CVE-2016-1839: heap-based buffer overflow (xmlDictAddString func) (bnc#1039069) 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id100544
    published2017-05-31
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100544
    titleSUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2017:1454-1)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2017:1454-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(100544);
  script_version("3.7");
  script_cvs_date("Date: 2019/09/11 11:22:15");

  script_cve_id("CVE-2016-1839", "CVE-2017-9047", "CVE-2017-9048", "CVE-2017-9049", "CVE-2017-9050");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2017:1454-1)");
  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 issues :

  - CVE-2017-9047, CVE-2017-9048: The function
    xmlSnprintfElementContent in valid.c was vulnerable to a
    stack-based buffer overflow (bsc#1039063, bsc#1039064)

  - CVE-2017-9049: The function xmlDictComputeFastKey in
    dict.c was vulnerable to a heap-based buffer over-read.
    (bsc#1039066)

  - CVE-2017-9050: The function xmlDictAddString was
    vulnerable to a heap-based buffer over-read
    (bsc#1039661)

  - CVE-2016-1839: heap-based buffer overflow
    (xmlDictAddString func) (bnc#1039069)

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=1039063"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1039064"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1039066"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1039069"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1039661"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981114"
  );
  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-2017-9047/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-9048/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-9049/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-9050/"
  );
  # https://www.suse.com/support/update/announcement/2017/suse-su-20171454-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?97009793"
  );
  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-SP2:zypper in -t
patch SUSE-SLE-SDK-12-SP2-2017-891=1

SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t
patch SUSE-SLE-RPI-12-SP2-2017-891=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2017-891=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP2-2017-891=1

OpenStack Cloud Magnum Orchestration 7:zypper in -t patch
SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2017-891=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/I:N/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:"2016/05/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/05/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/05/31");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 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);
if (cpu >!< "x86_64") audit(AUDIT_ARCH_NOT, "x86_64", cpu);


sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libxml2-2-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libxml2-2-debuginfo-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libxml2-debugsource-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libxml2-tools-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libxml2-tools-debuginfo-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"python-libxml2-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"python-libxml2-debuginfo-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"python-libxml2-debugsource-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libxml2-2-32bit-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libxml2-2-debuginfo-32bit-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libxml2-2-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libxml2-2-32bit-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libxml2-2-debuginfo-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libxml2-2-debuginfo-32bit-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libxml2-debugsource-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libxml2-tools-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libxml2-tools-debuginfo-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"python-libxml2-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"python-libxml2-debuginfo-2.9.4-36.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"python-libxml2-debugsource-2.9.4-36.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2");
}
  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2017-0024.NASL
    descriptionAn update of [ncurses,openldap,libxml2,ruby] packages for PhotonOS has been released.
    last seen2019-02-21
    modified2019-02-07
    plugin id111873
    published2018-08-17
    reporterTenable
    sourcehttps://www.tenable.com/plugins/index.php?view=single&id=111873
    titlePhoton OS 1.0: Libxml2 / Ncurses / Openldap / Ruby PHSA-2017-0024 (deprecated)
    code
    #
# (C) Tenable Network Security, Inc.
#
# @DEPRECATED@
#
# Disabled on 2/7/2019
#

# The descriptive text and package checks in this plugin were
# extracted from VMware Security Advisory PHSA-2017-0024. The text
# itself is copyright (C) VMware, Inc.

include("compat.inc");

if (description)
{
  script_id(111873);
  script_version("1.2");
  script_cvs_date("Date: 2019/02/07 18:59:50");

  script_cve_id(
    "CVE-2017-6181",
    "CVE-2017-9047",
    "CVE-2017-9048",
    "CVE-2017-9049",
    "CVE-2017-9050",
    "CVE-2017-9287",
    "CVE-2017-10684",
    "CVE-2017-10685"
  );

  script_name(english:"Photon OS 1.0: Libxml2 / Ncurses / Openldap / Ruby PHSA-2017-0024 (deprecated)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"This plugin has been deprecated.");
  script_set_attribute(attribute:"description", value:
"An update of [ncurses,openldap,libxml2,ruby] packages for PhotonOS has
been released.");
  # https://github.com/vmware/photon/wiki/Security-Updates-54
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e51e1258");
  script_set_attribute(attribute:"solution", value:"n/a.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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_attribute(attribute:"cvss_score_source", value:"CVE-2017-10684");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/07/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:libxml2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:ncurses");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:openldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:ruby");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:1.0");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

exit(0, "This plugin has been deprecated.");

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/PhotonOS/release");
if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, "PhotonOS");
if (release !~ "^VMware Photon (?:Linux|OS) 1\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 1.0");

if (!get_kb_item("Host/PhotonOS/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, "PhotonOS", cpu);

flag = 0;

pkgs = [
  "libxml2-2.9.4-6.ph1",
  "libxml2-debuginfo-2.9.4-6.ph1",
  "libxml2-devel-2.9.4-6.ph1",
  "libxml2-python-2.9.4-6.ph1",
  "ncurses-6.0-5.ph1",
  "ncurses-compat-6.0-5.ph1",
  "ncurses-debuginfo-6.0-5.ph1",
  "ncurses-devel-6.0-5.ph1",
  "openldap-2.4.43-3.ph1",
  "openldap-debuginfo-2.4.43-3.ph1",
  "ruby-2.4.0-4.ph1",
  "ruby-debuginfo-2.4.0-4.ph1"
];

foreach (pkg in pkgs)
  if (rpm_check(release:"PhotonOS-1.0", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2 / ncurses / openldap / ruby");
}
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_76E59F554F7A4887BCB011604004163A.NASL
    descriptionlibxml2 developers report : The htmlParseTryOrFinish function in HTMLparser.c in libxml2 2.9.4 allows attackers to cause a denial of service (buffer over-read) or information disclosure. A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer
    last seen2020-06-01
    modified2020-06-02
    plugin id105216
    published2017-12-14
    reporterThis script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/105216
    titleFreeBSD : libxml2 -- Multiple Issues (76e59f55-4f7a-4887-bcb0-11604004163a)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 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(105216);
  script_version("3.4");
  script_cvs_date("Date: 2018/11/21 10:46:31");

  script_cve_id("CVE-2017-8872", "CVE-2017-9047", "CVE-2017-9048", "CVE-2017-9049", "CVE-2017-9050");

  script_name(english:"FreeBSD : libxml2 -- Multiple Issues (76e59f55-4f7a-4887-bcb0-11604004163a)");
  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:
"libxml2 developers report :

The htmlParseTryOrFinish function in HTMLparser.c in libxml2 2.9.4
allows attackers to cause a denial of service (buffer over-read) or
information disclosure.

A buffer overflow was discovered in libxml2
20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in
valid.c is supposed to recursively dump the element content definition
into a char buffer 'buf' of size 'size'. The variable len is assigned
strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then
(i) the content->prefix is appended to buf (if it actually fits)
whereupon (ii) content->name is written to the buffer. However, the
check for whether the content->name actually fits also uses 'len'
rather than the updated buffer length strlen(buf). This allows us to
write about 'size' many bytes beyond the allocated memory. This
vulnerability causes programs that use libxml2, such as PHP, to crash.

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based
buffer overflow. The function xmlSnprintfElementContent in valid.c is
supposed to recursively dump the element content definition into a
char buffer 'buf' of size 'size'. At the end of the routine, the
function may strcat two more characters without checking whether the
current strlen(buf) + 2 < size. This vulnerability causes programs
that use libxml2, such as PHP, to crash.

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based
buffer over-read in the xmlDictComputeFastKey function in dict.c. This
vulnerability causes programs that use libxml2, such as PHP, to crash.
This vulnerability exists because of an incomplete fix for libxml2 Bug
759398.

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based
buffer over-read in the xmlDictAddString function in dict.c. This
vulnerability causes programs that use libxml2, such as PHP, to crash.
This vulnerability exists because of an incomplete fix for
CVE-2016-1839."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.gnome.org/show_bug.cgi?id=775200"
  );
  # http://www.openwall.com/lists/oss-security/2017/05/15/1
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2017/05/15/1"
  );
  # http://www.securityfocus.com/bid/98599
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.securityfocus.com/bid/98599"
  );
  # http://www.openwall.com/lists/oss-security/2017/05/15/1
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2017/05/15/1"
  );
  # http://www.securityfocus.com/bid/98556
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.securityfocus.com/bid/98556"
  );
  # http://www.openwall.com/lists/oss-security/2017/05/15/1
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2017/05/15/1"
  );
  # http://www.securityfocus.com/bid/98601
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.securityfocus.com/bid/98601"
  );
  # http://www.openwall.com/lists/oss-security/2017/05/15/1
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.openwall.com/lists/oss-security/2017/05/15/1"
  );
  # http://www.securityfocus.com/bid/98568
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.securityfocus.com/bid/98568"
  );
  # https://vuxml.freebsd.org/freebsd/76e59f55-4f7a-4887-bcb0-11604004163a.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?fff120c8"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");

  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:"2017/05/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/12/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/12/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 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_warning(port:0, extra:pkg_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2017-711.NASL
    descriptionThis update for libxml2 fixes the following security issues : - CVE-2017-9050: A heap-based buffer over-read in xmlDictAddString (bsc#1039069, bsc#1039661) - CVE-2017-9049: A heap-based buffer overflow in xmlDictComputeFastKey (bsc#1039066) - CVE-2017-9048: A stack overflow vulnerability in xmlSnprintfElementContent (bsc#1039063) - CVE-2017-9047: A stack overflow vulnerability in xmlSnprintfElementContent (bsc#1039064) This update was imported from the SUSE:SLE-12-SP2:Update update project.
    last seen2020-06-05
    modified2017-06-20
    plugin id100884
    published2017-06-20
    reporterThis script is Copyright (C) 2017-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/100884
    titleopenSUSE Security Update : libxml2 (openSUSE-2017-711)
    code
    #%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2017-711.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(100884);
  script_version("3.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");

  script_cve_id("CVE-2017-9047", "CVE-2017-9048", "CVE-2017-9049", "CVE-2017-9050");

  script_name(english:"openSUSE Security Update : libxml2 (openSUSE-2017-711)");
  script_summary(english:"Check for the openSUSE-2017-711 patch");

  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 security issues :

  - CVE-2017-9050: A heap-based buffer over-read in
    xmlDictAddString (bsc#1039069, bsc#1039661)

  - CVE-2017-9049: A heap-based buffer overflow in
    xmlDictComputeFastKey (bsc#1039066)

  - CVE-2017-9048: A stack overflow vulnerability in
    xmlSnprintfElementContent (bsc#1039063)

  - CVE-2017-9047: A stack overflow vulnerability in
    xmlSnprintfElementContent (bsc#1039064)

This update was imported from the SUSE:SLE-12-SP2:Update update
project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1039063"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1039064"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1039066"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1039069"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1039661"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected libxml2 packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");

  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-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libxml2-2-debuginfo-32bit");
  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");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python-libxml2-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:python-libxml2-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.2");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/06/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/06/20");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2020 Tenable Network Security, Inc.");
  script_family(english:"SuSE Local Security Checks");

  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 !~ "^(SUSE42\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.2", 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:"SUSE42.2", reference:"libxml2-2-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"libxml2-2-debuginfo-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"libxml2-debugsource-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"libxml2-devel-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"libxml2-tools-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"libxml2-tools-debuginfo-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"python-libxml2-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"python-libxml2-debuginfo-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", reference:"python-libxml2-debugsource-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"libxml2-2-32bit-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"libxml2-2-debuginfo-32bit-2.9.4-5.6.1") ) flag++;
if ( rpm_check(release:"SUSE42.2", cpu:"x86_64", reference:"libxml2-devel-32bit-2.9.4-5.6.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libxml2-2 / libxml2-2-32bit / libxml2-2-debuginfo / etc");
}
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3424-1.NASL
    descriptionIt was discovered that a type confusion error existed in libxml2. An attacker could use this to specially construct XML data that could cause a denial of service or possibly execute arbitrary code. (CVE-2017-0663) It was discovered that libxml2 did not properly validate parsed entity references. An attacker could use this to specially construct XML data that could expose sensitive information. (CVE-2017-7375) It was discovered that a buffer overflow existed in libxml2 when handling HTTP redirects. An attacker could use this to specially construct XML data that could cause a denial of service or possibly execute arbitrary code. (CVE-2017-7376) Marcel Bohme and Van-Thuan Pham discovered a buffer overflow in libxml2 when handling elements. An attacker could use this to specially construct XML data that could cause a denial of service or possibly execute arbitrary code. (CVE-2017-9047) Marcel Bohme and Van-Thuan Pham discovered a buffer overread in libxml2 when handling elements. An attacker could use this to specially construct XML data that could cause a denial of service. (CVE-2017-9048) Marcel Bohme and Van-Thuan Pham discovered multiple buffer overreads in libxml2 when handling parameter-entity references. An attacker could use these to specially construct XML data that could cause a denial of service. (CVE-2017-9049, CVE-2017-9050). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id103327
    published2017-09-19
    reporterUbuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/103327
    titleUbuntu 14.04 LTS / 16.04 LTS / 17.04 : libxml2 vulnerabilities (USN-3424-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-1557-1.NASL
    descriptionThis update for libxml2 fixes the following issues: Security issues fixed : - CVE-2017-9050: heap-based buffer overflow (xmlDictAddString func) [bsc#1039069, bsc#1039661] - CVE-2017-9049: heap-based buffer overflow (xmlDictComputeFastKey func) [bsc#1039066] - CVE-2017-9048: stack overflow vulnerability (xmlSnprintfElementContent func) [bsc#1039063] - CVE-2017-9047: stack overflow vulnerability (xmlSnprintfElementContent func) [bsc#1039064] A clarification for the previously released update: For CVE-2016-9318 we decided not to ship a fix since it can break existing setups. Please take appropriate actions if you parse untrusted XML files and use the new -noxxe flag if possible (bnc#1010675, bnc#1013930). 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id100780
    published2017-06-14
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100780
    titleSUSE SLES11 Security Update : libxml2 (SUSE-SU-2017:1557-1)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201711-01.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201711-01 (libxml2: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in libxml2. Please review the CVE identifiers referenced below for details. Impact : A remote attacker, by enticing a user to process a specially crafted XML document, could remotely execute arbitrary code, conduct XML External Entity (XXE) attacks, or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id104492
    published2017-11-10
    reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/104492
    titleGLSA-201711-01 : libxml2: Multiple vulnerabilities
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-1538-1.NASL
    descriptionThis update for libxml2 fixes the following security issues : - CVE-2017-9050: A heap-based buffer over-read in xmlDictAddString (bsc#1039069, bsc#1039661) - CVE-2017-9049: A heap-based buffer overflow in xmlDictComputeFastKey (bsc#1039066) - CVE-2017-9048: A stack overflow vulnerability in xmlSnprintfElementContent (bsc#1039063) - CVE-2017-9047: A stack overflow vulnerability in xmlSnprintfElementContent (bsc#1039064) 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id100754
    published2017-06-13
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100754
    titleSUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2017:1538-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-1008.NASL
    descriptionCVE-2017-7375 Missing validation for external entities in xmlParsePEReference CVE-2017-9047 CVE-2017-9048 A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer
    last seen2020-03-17
    modified2017-07-03
    plugin id101174
    published2017-07-03
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/101174
    titleDebian DLA-1008-1 : libxml2 security update
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-1587-1.NASL
    descriptionThis update for libxml2 fixes the following issues : - CVE-2017-9050: heap-based buffer overflow (xmlDictAddString func) [bsc#1039069, bsc#1039661] - CVE-2017-9049: heap-based buffer overflow (xmlDictComputeFastKey func) [bsc#1039066] - CVE-2017-9048: stack overflow vulnerability (xmlSnprintfElementContent func) [bsc#1039063] - CVE-2017-9047: stack overflow vulnerability (xmlSnprintfElementContent func) [bsc#1039064] 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.
    last seen2020-06-01
    modified2020-06-02
    plugin id100867
    published2017-06-19
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100867
    titleSUSE SLES12 Security Update : libxml2 (SUSE-SU-2017:1587-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3952.NASL
    descriptionSeveral 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, information leaks, or potentially, the execution of arbitrary code with the privileges of the user running the application.
    last seen2020-06-01
    modified2020-06-02
    plugin id102685
    published2017-08-23
    reporterThis script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/102685
    titleDebian DSA-3952-1 : libxml2 - security update
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2020-1268.NASL
    descriptionAccording to the versions of the libxml2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.(CVE-2017-9050) - libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.(CVE-2017-9049) - libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer
    last seen2020-03-26
    modified2020-03-20
    plugin id134734
    published2020-03-20
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134734
    titleEulerOS Virtualization 3.0.2.2 : libxml2 (EulerOS-SA-2020-1268)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2017-663.NASL
    descriptionThis update for libxml2 fixes the following issues : - CVE-2017-9047, CVE-2017-9048: The function xmlSnprintfElementContent in valid.c was vulnerable to a stack-based buffer overflow (bsc#1039063, bsc#1039064) - CVE-2017-9049: The function xmlDictComputeFastKey in dict.c was vulnerable to a heap-based buffer over-read. (bsc#1039066) - CVE-2017-9050: The function xmlDictAddString was vulnerable to a heap-based buffer over-read (bsc#1039661) - CVE-2016-1839: heap-based buffer overflow (xmlDictAddString func) (bnc#1039069) This update was imported from the SUSE:SLE-12-SP2:Update update project.
    last seen2020-06-05
    modified2017-06-09
    plugin id100708
    published2017-06-09
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100708
    titleopenSUSE Security Update : libxml2 (openSUSE-2017-663)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-2491.NASL
    descriptionAccording to the versions of the libxml2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A remote code execution vulnerability in libxml2 could enable an attacker using a specially crafted file to execute arbitrary code within the context of an unprivileged process. This issue is rated as High due to the possibility of remote code execution in an application that uses this library. Product: Android. Versions: 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0, 7.1.1, 7.1.2. Android ID: A-37104170.(CVE-2017-0663) - 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 than CVE-2015-8035 and CVE-2018-9251.(CVE-2018-14567) - The htmlParseTryOrFinish function in HTMLparser.c in libxml2 2.9.4 allows attackers to cause a denial of service (buffer over-read) or information disclosure.(CVE-2017-8872) - libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer
    last seen2020-05-08
    modified2019-12-04
    plugin id131644
    published2019-12-04
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/131644
    titleEulerOS 2.0 SP2 : libxml2 (EulerOS-SA-2019-2491)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-2626.NASL
    descriptionAccording to the versions of the libxml2 packages installed, the EulerOS 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 Fix(es):** DISPUTED ** libxml2 2.9.4, when used in recover mode, allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted XML document. NOTE: The maintainer states
    last seen2020-05-08
    modified2019-12-18
    plugin id132161
    published2019-12-18
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/132161
    titleEulerOS 2.0 SP3 : libxml2 (EulerOS-SA-2019-2626)

References