Amazon Linux AMI : libvorbis (ALAS-2012-47)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2012-47.
#

include("compat.inc");

if (description)
{
  script_id(69654);
  script_version("1.6");
  script_cvs_date("Date: 2018/04/18 15:09:34");

  script_cve_id("CVE-2012-0444");
  script_xref(name:"ALAS", value:"2012-47");
  script_xref(name:"RHSA", value:"2012:0136");

  script_name(english:"Amazon Linux AMI : libvorbis (ALAS-2012-47)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"A heap-based buffer overflow flaw was found in the way the libvorbis
library parsed Ogg Vorbis media files. If a specially crafted Ogg
Vorbis media file was opened by an application using libvorbis, it
could cause the application to crash or, possibly, execute arbitrary
code with the privileges of the user running the application.
(CVE-2012-0444)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2012-47.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update libvorbis' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvorbis");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvorbis-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvorbis-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:libvorbis-devel-docs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/03/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/09/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

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


flag = 0;
if (rpm_check(release:"ALA", reference:"libvorbis-1.2.3-4.6.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"libvorbis-debuginfo-1.2.3-4.6.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"libvorbis-devel-1.2.3-4.6.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"libvorbis-devel-docs-1.2.3-4.6.amzn1")) 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, "libvorbis / libvorbis-debuginfo / libvorbis-devel / etc");
}