Debian DLA-779-1 : 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-779-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(96396);
  script_version("3.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2016-8745");

  script_name(english:"Debian DLA-779-1 : 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:
"A bug in the error handling of the send file code for the NIO HTTP
connector resulted in the current Processor object being added to the
Processor cache multiple times. This in turn meant that the same
Processor could be used for concurrent requests. Sharing a Processor
can result in information leakage between requests including, not
limited to, session ID and the response body.

In addition this update also addresses a regression when running
Tomcat 7 with SecurityManager enabled due to an incomplete fix for
CVE-2016-6816.

For Debian 7 'Wheezy', these problems have been fixed in version
7.0.28-4+deb7u9.

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/2017/01/msg00011.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:L/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:N/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:"2017/01/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/01/11");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 Tenable Network Security, Inc.");
  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+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"libservlet3.0-java-doc", reference:"7.0.28-4+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"libtomcat7-java", reference:"7.0.28-4+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7", reference:"7.0.28-4+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-admin", reference:"7.0.28-4+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-common", reference:"7.0.28-4+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-docs", reference:"7.0.28-4+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-examples", reference:"7.0.28-4+deb7u9")) flag++;
if (deb_check(release:"7.0", prefix:"tomcat7-user", reference:"7.0.28-4+deb7u9")) 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");