6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
6.5 Medium
AI Score
Confidence
Low
0.027 Low
EPSS
Percentile
90.6%
PuTTY is prone to multiple integer overflow vulnerabilities.
# SPDX-FileCopyrightText: 2013 Greenbone AG
# 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-only
CPE = "cpe:/a:putty:putty";
if (description)
{
script_oid("1.3.6.1.4.1.25623.1.0.803871");
script_version("2024-02-15T05:05:40+0000");
script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
script_tag(name:"creation_date", value:"2013-08-21 11:16:36 +0530 (Wed, 21 Aug 2013)");
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_cve_id("CVE-2013-4206", "CVE-2013-4207", "CVE-2013-4208", "CVE-2013-4852");
script_tag(name:"qod_type", value:"registry");
script_tag(name:"solution_type", value:"VendorFix");
script_name("PuTTY Multiple Integer Overflow Vulnerabilities - Windows");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2013 Greenbone AG");
script_family("General");
script_dependencies("gb_putty_portable_detect.nasl");
script_mandatory_keys("putty/detected");
script_tag(name:"summary", value:"PuTTY is prone to multiple integer overflow vulnerabilities.");
script_tag(name:"insight", value:"Multiple Integer overflow errors due to:
- Improper processing of public-key signatures.
- Improper validation of DSA signatures in the 'modmul()' function
(putty/sshbn.c)
- Not removing sensitive data stored in the memory after it is no longer
needed.
- Input is not properly validated when handling negative SSH handshake
message lengths in the getstring() function in sshrsa.c and sshdss.c.");
script_tag(name:"impact", value:"Successful exploitation will allow attackers to cause
heap-based buffer overflows, resulting in a denial of service or potentially allowing
the execution of arbitrary code.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"affected", value:"PuTTY version before 0.63 on Windows");
script_tag(name:"solution", value:"Update to version 0.63 or later.");
script_xref(name:"URL", value:"http://secunia.com/advisories/54354");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/61599");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/61644");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/61645");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/61649");
script_xref(name:"URL", value:"http://seclists.org/oss-sec/2013/q3/289");
script_xref(name:"URL", value:"http://seclists.org/oss-sec/2013/q3/291");
script_xref(name:"URL", value:"http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html");
script_xref(name:"URL", value:"http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html");
exit(0);
}
include( "host_details.inc" );
include( "version_func.inc" );
if( ! infos = get_app_version_and_location( cpe:CPE, exit_no_version:TRUE ) )
exit( 0 );
version = infos["version"];
location = infos["location"];
if( version_is_less( version:version, test_version:"0.63" ) ) {
report = report_fixed_ver( installed_version:version, fixed_version:"0.63", install_path:location );
security_message( data:report, port:0 );
exit( 0 );
}
exit( 99 );
seclists.org/oss-sec/2013/q3/289
seclists.org/oss-sec/2013/q3/291
secunia.com/advisories/54354
www.chiark.greenend.org.uk/~sgtatham/putty/download.html
www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html
www.securityfocus.com/bid/61599
www.securityfocus.com/bid/61644
www.securityfocus.com/bid/61645
www.securityfocus.com/bid/61649