Debian DLA-1301-1 : tomcat7 security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-1301-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(107151);
  script_version("1.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2018-1304", "CVE-2018-1305");

  script_name(english:"Debian DLA-1301-1 : tomcat7 security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Two security vulnerabilities have been discovered in the Tomcat
servlet and JSP engine.

CVE-2018-1304 The URL pattern of '' (the empty string) which exactly
maps to the context root was not correctly handled in Apache Tomcat
when used as part of a security constraint definition. This caused the
constraint to be ignored. It was, therefore, possible for unauthorized
users to gain access to web application resources that should have
been protected. Only security constraints with a URL pattern of the
empty string were affected.

CVE-2018-1305 Security constraints defined by annotations of Servlets
in Apache Tomcat were only applied once a Servlet had been loaded.
Because security constraints defined in this way apply to the URL
pattern and any URLs below that point, it was possible - depending on
the order Servlets were loaded - for some security constraints not to
be applied. This could have exposed resources to users who were not
authorized to access them.

For Debian 7 'Wheezy', these problems have been fixed in version
7.0.28-4+deb7u18.

We recommend that you upgrade your tomcat7 packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2018/03/msg00004.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/tomcat7"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  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:L/UI:N/S:U/C:H/I:N/A:N");
  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:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libservlet3.0-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libservlet3.0-java-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtomcat7-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat7");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat7-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat7-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat7-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat7-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat7-user");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/07");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"libservlet3.0-java", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"libservlet3.0-java-doc", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"libtomcat7-java", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-admin", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-common", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-docs", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-examples", reference:"7.0.28-4+deb7u18")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-user", reference:"7.0.28-4+deb7u18")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");