5.8 Medium
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
Access Complexity
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.651 Medium
EPSS
Percentile
97.9%
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.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(57540);
script_version("1.20");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/06");
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_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.");
# http://mail-archives.apache.org/mod_mbox/tomcat-announce/201112.mbox/%3C4EFB9800.5010106%40apache.org%3E
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_attribute(attribute:"agent", value:"all");
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:5");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Web Servers");
script_copyright(english:"This script is Copyright (C) 2012-2024 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)?$");