RedHat Update for tomcat RHSA-2017:0935-01

# Copyright (C) 2017 Greenbone Networks GmbH
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (C) of their respective author(s)
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.871795");
  script_version("2020-03-13T10:06:41+0000");
  script_tag(name:"last_modification", value:"2020-03-13 10:06:41 +0000 (Fri, 13 Mar 2020)");
  script_tag(name:"creation_date", value:"2017-04-13 06:32:25 +0200 (Thu, 13 Apr 2017)");
  script_cve_id("CVE-2016-6816", "CVE-2016-8745");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"qod_type", value:"package");
  script_name("RedHat Update for tomcat RHSA-2017:0935-01");
  script_tag(name:"summary", value:"The remote host is missing an update for the 'tomcat'
  package(s) announced via the referenced advisory.");
  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
  script_tag(name:"insight", value:"Apache Tomcat is a servlet container for
  the Java Servlet and JavaServer Pages (JSP) technologies.

Security Fix(es):

  * It was discovered that the code that parsed the HTTP request line
permitted invalid characters. This could be exploited, in conjunction with
a proxy that also permitted the invalid characters but with a different
interpretation, to inject data into the HTTP response. By manipulating the
HTTP response the attacker could poison a web-cache, perform an XSS attack,
or obtain sensitive information from requests other then their own.
(CVE-2016-6816)

Note: This fix causes Tomcat to respond with an HTTP 400 Bad Request error
when request contains characters that are not permitted by the HTTP
specification to appear not encoded, even though they were previously
accepted. The newly introduced system property
tomcat.util.http.parser.HttpParser.requestTargetAllow can be used to
configure Tomcat to accept curly braces ({ and }) and the pipe symbol
in not encoded form, as these are often used in URLs without being properly
encoded.

  * A bug was discovered in the error handling of the send file code for the
NIO HTTP connector. This led to the current Processor object being added to
the Processor cache multiple times allowing information leakage between
requests including, and not limited to, session ID and the response body.
(CVE-2016-8745)");
  script_tag(name:"affected", value:"tomcat on
  Red Hat Enterprise Linux Server (v. 7)");
  script_tag(name:"solution", value:"Please Install the Updated Packages.");

  script_xref(name:"RHSA", value:"2017:0935-01");
  script_xref(name:"URL", value:"https://www.redhat.com/archives/rhsa-announce/2017-April/msg00026.html");
  script_tag(name:"solution_type", value:"VendorFix");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
  script_family("Red Hat Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/rhel", "ssh/login/rpms", re:"ssh/login/release=RHENT_7");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release) exit(0);

res = "";

if(release == "RHENT_7")
{

  if ((res = isrpmvuln(pkg:"tomcat", rpm:"tomcat~7.0.69~11.el7_3", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"tomcat-admin-webapps", rpm:"tomcat-admin-webapps~7.0.69~11.el7_3", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"tomcat-el-2.2-api", rpm:"tomcat-el-2.2-api~7.0.69~11.el7_3", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"tomcat-jsp-2.2-api", rpm:"tomcat-jsp-2.2-api~7.0.69~11.el7_3", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"tomcat-lib", rpm:"tomcat-lib~7.0.69~11.el7_3", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"tomcat-servlet-3.0-api", rpm:"tomcat-servlet-3.0-api~7.0.69~11.el7_3", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if ((res = isrpmvuln(pkg:"tomcat-webapps", rpm:"tomcat-webapps~7.0.69~11.el7_3", rls:"RHENT_7")) != NULL)
  {
    security_message(data:res);
    exit(0);
  }

  if (__pkg_match) exit(99);
  exit(0);
}