Apache Tomcat 5.x < 5.5.35 Hash Collision Denial of Service

2012-01-13T00:00:00
ID TOMCAT_5_5_35.NASL
Type nessus
Reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2012-01-13T00:00:00

Description

According to its self-reported version number, the instance of Apache Tomcat 5.x listening on the remote host is prior to 5.5.35. It is, therefore, affected by a denial of service vulnerability.

Large numbers of crafted form parameters can cause excessive CPU consumption due to hash collisions.

Note that Nessus has not tested for this issue but has instead relied only on the application

                                        
                                            #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(57540);
  script_version("1.18");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/11");

  script_cve_id("CVE-2011-4858", "CVE-2012-0022");
  script_bugtraq_id(51200, 51447);
  script_xref(name:"CERT", value:"903934");

  script_name(english:"Apache Tomcat 5.x < 5.5.35 Hash Collision Denial of Service");
  script_summary(english:"Checks the Apache Tomcat version.");

  script_set_attribute(attribute:"synopsis", value:"The remote web server is affected by a denial of service vulnerability");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the instance of Apache
Tomcat 5.x listening on the remote host is prior to 5.5.35. It is,
therefore, affected by a denial of service vulnerability.

Large numbers of crafted form parameters can cause excessive CPU
consumption due to hash collisions.

Note that Nessus has not tested for this issue but has instead relied
only on the application's self-reported version number.");
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d97dc97c");
  script_set_attribute(attribute:"see_also", value:"http://www.nruns.com/_downloads/advisory28122011.pdf");
  script_set_attribute(attribute:"see_also", value:"http://tomcat.apache.org/security-5.html#Fixed_in_Apache_Tomcat_5.5.35");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Tomcat 5.5.35 or later. Alternatively, as a workaround, set
the 'maxPostSize' configuration variable to the lowest sensible value
required to support your hosted applications.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2011-4858");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"vuln_publication_date", value:"2011/12/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/01/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/01/13");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:tomcat");
  script_set_attribute(attribute:"agent", value:"all");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tomcat_error_version.nasl", "tomcat_win_installed.nbin", "apache_tomcat_nix_installed.nbin");
  script_require_keys("installed_sw/Apache Tomcat");

  exit(0);
}

include("tomcat_version.inc");

tomcat_check_version(fixed:"5.5.35", min:"5.0.0", severity:SECURITY_WARNING, granularity_regex:"^5(\.5)?$");