Oracle Linux 6 : python-imaging (ELSA-2020-0898)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2020:0898 and 
# Oracle Linux Security Advisory ELSA-2020-0898 respectively.
#

include("compat.inc");

if (description)
{
  script_id(134752);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/14");

  script_cve_id("CVE-2020-5312");
  script_xref(name:"RHSA", value:"2020:0898");

  script_name(english:"Oracle Linux 6 : python-imaging (ELSA-2020-0898)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"From Red Hat Security Advisory 2020:0898 :

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in
the RHSA-2020:0898 advisory.

  - python-pillow: improperly restricted operations on
    memory buffer in libImaging/PcxDecode.c (CVE-2020-5312)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2020-March/009745.html"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Update the affected python-imaging 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-2020-5312");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python-imaging");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python-imaging-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python-imaging-sane");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:python-imaging-tk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/01/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

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

  exit(0);
}


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


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

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

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

flag = 0;
if (rpm_check(release:"EL6", reference:"python-imaging-1.1.6-20.el6_10")) flag++;
if (rpm_check(release:"EL6", reference:"python-imaging-devel-1.1.6-20.el6_10")) flag++;
if (rpm_check(release:"EL6", reference:"python-imaging-sane-1.1.6-20.el6_10")) flag++;
if (rpm_check(release:"EL6", reference:"python-imaging-tk-1.1.6-20.el6_10")) 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, "python-imaging / python-imaging-devel / python-imaging-sane / etc");
}