5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
6.1 Medium
AI Score
Confidence
Low
0.071 Low
EPSS
Percentile
94.0%
ClamAV is prone to a denial of service (DoS) vulnerability.
# Copyright (C) 2011 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(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.
CPE = "cpe:/a:clamav:clamav";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.902726");
script_version("2022-04-28T13:38:57+0000");
script_tag(name:"last_modification", value:"2022-04-28 13:38:57 +0000 (Thu, 28 Apr 2022)");
script_tag(name:"creation_date", value:"2011-08-29 16:22:41 +0200 (Mon, 29 Aug 2011)");
script_cve_id("CVE-2011-2721");
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_name("ClamAV < 0.97.2 Hash Manager Off-By-One DoS Vulnerability - Windows");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2011 Greenbone Networks GmbH");
script_family("Denial of Service");
script_dependencies("gb_clamav_smb_login_detect.nasl", "gb_clamav_remote_detect.nasl", "os_detection.nasl");
script_mandatory_keys("clamav/detected", "Host/runs_windows");
script_xref(name:"URL", value:"http://secunia.com/advisories/45382");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/48891");
script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/68785");
script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2011/07/26/3");
script_tag(name:"summary", value:"ClamAV is prone to a denial of service (DoS) vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The flaw is due to the way the hash manager of ClamAV scans
messages with certain hashes.");
script_tag(name:"impact", value:"Successful exploitation will allow attackers to provide a message
with specially-crafted hash signature in it, leading to denial of service (clamscan executable
crash).");
script_tag(name:"affected", value:"ClamAV versions prior to 0.97.2 (3.0.3.6870).");
script_tag(name:"solution", value:"Update to version 0.97.2 or later.");
script_tag(name:"qod_type", value:"remote_banner");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if( isnull( port = get_app_port( cpe:CPE ) ) )
exit( 0 );
if( ! infos = get_app_version_and_location( port:port, cpe:CPE, exit_no_version:TRUE ) )
exit( 0 );
vers = infos["version"];
path = infos["location"];
if( version_is_less( version:vers, test_version:"0.97.2" ) ) {
report = report_fixed_ver( installed_version:vers, fixed_version:"0.97.2", install_path:path );
security_message( port:port, data:report );
exit( 0 );
}
exit( 99 );