EulerOS Virtualization for ARM 64 3.0.2.0 : libxslt (EulerOS-SA-2020-1215)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(134504);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/22");

  script_cve_id(
    "CVE-2015-7995",
    "CVE-2016-1683",
    "CVE-2016-1684",
    "CVE-2019-18197"
  );

  script_name(english:"EulerOS Virtualization for ARM 64 3.0.2.0 : libxslt (EulerOS-SA-2020-1215)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization for ARM 64 host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the libxslt packages installed, the
EulerOS Virtualization for ARM 64 installation on the remote host is
affected by the following vulnerabilities :

  - numbers.c in libxslt before 1.1.29, as used in Google
    Chrome before 51.0.2704.63, mishandles the i format
    token for xsl:number data, which allows remote
    attackers to cause a denial of service (integer
    overflow or resource consumption) or possibly have
    unspecified other impact via a crafted
    document.(CVE-2016-1684)

  - numbers.c in libxslt before 1.1.29, as used in Google
    Chrome before 51.0.2704.63, mishandles namespace nodes,
    which allows remote attackers to cause a denial of
    service (out-of-bounds heap memory access) or possibly
    have unspecified other impact via a crafted
    document.(CVE-2016-1683)

  - A type confusion vulnerability was discovered in the
    xsltStylePreCompute() function of libxslt. A remote
    attacker could possibly exploit this flaw to cause an
    application using libxslt to crash by tricking the
    application into processing a specially crafted XSLT
    document.(CVE-2015-7995)

  - In xsltCopyText in transform.c in libxslt 1.1.33, a
    pointer variable isn't reset under certain
    circumstances. If the relevant memory area happened to
    be freed and reused in a certain way, a bounds check
    could fail and memory outside a buffer could be written
    to, or uninitialized data could be
    disclosed.(CVE-2019-18197)

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-2020-1215
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?67c0c3ea");
  script_set_attribute(attribute:"solution", value:
"Update the affected libxslt packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:P/I:P/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:H/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:"cvss_score_source", value:"CVE-2019-18197");

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

  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libxslt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libxslt-python");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.2.0");
  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) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "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");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "3.0.2.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.2.0");
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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

flag = 0;

pkgs = ["libxslt-1.1.28-5.h6",
        "libxslt-python-1.1.28-5.h6"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", 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, "libxslt");
}