Amazon Linux AMI : tomcat6 (ALAS-2017-821)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2017-821.
#

include("compat.inc");

if (description)
{
  script_id(99534);
  script_version("3.9");
  script_cvs_date("Date: 2018/04/18 15:09:36");

  script_cve_id("CVE-2017-5647");
  script_xref(name:"ALAS", value:"2017-821");

  script_name(english:"Amazon Linux AMI : tomcat6 (ALAS-2017-821)");
  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:
"Incorrect handling of pipelined requests when send file was used :

A bug in the handling of the pipelined requests in Apache Tomcat
9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to
7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the
pipelined request being lost when send file processing of the previous
request completed. This could result in responses appearing to be sent
for the wrong request. For example, a user agent that sent requests A,
B and C could see the correct response for request A, the response for
request C for request B and no response for request C. (CVE-2017-5647)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2017-821.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update tomcat6' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-admin-webapps");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-docs-webapp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-el-2.1-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-javadoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-jsp-2.1-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-lib");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-servlet-2.5-api");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:tomcat6-webapps");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/04/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/04/21");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 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:"tomcat6-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-admin-webapps-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-docs-webapp-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-el-2.1-api-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-javadoc-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-jsp-2.1-api-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-lib-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-servlet-2.5-api-6.0.53-1.11.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"tomcat6-webapps-6.0.53-1.11.amzn1")) 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, "tomcat6 / tomcat6-admin-webapps / tomcat6-docs-webapp / etc");
}