According to its banner, the remote web server is running a version of OpenSSL older than 0.9.8o / 1.0.0a. Such versions have the following vulnerabilities :
The mishandling of Cryptographic Message Syntax structures containing an OriginatorInfo element can lead to data being written to invalid memory addresses or memory being freed up twice. (CVE-2010-0742)
An uninitialized buffer of undefined length is returned when verification recovery fails for RSA keys. This allows an attacker to bypass key checks in applications calling the function EVP_PKEY_verify_recover(). Note this function is not used by OpenSSLcode itself. (CVE-2010-1633)
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(46801);
script_version("1.10");
script_cvs_date("Date: 2018/07/16 14:09:14");
script_cve_id("CVE-2010-0742", "CVE-2010-1633");
script_bugtraq_id(40502, 40503);
script_xref(name:"Secunia", value:"40024");
script_name(english:"OpenSSL < 0.9.8o / 1.0.0a Multiple Vulnerabilities");
script_summary(english:"Does a banner check");
script_set_attribute(
attribute:"synopsis",
value:"The remote web server has a SSL-related vulnerability."
);
script_set_attribute(
attribute:"description",
value:
"According to its banner, the remote web server is running a version
of OpenSSL older than 0.9.8o / 1.0.0a. Such versions have the
following vulnerabilities :
- The mishandling of Cryptographic Message Syntax
structures containing an OriginatorInfo element can
lead to data being written to invalid memory addresses
or memory being freed up twice. (CVE-2010-0742)
- An uninitialized buffer of undefined length is returned
when verification recovery fails for RSA keys. This
allows an attacker to bypass key checks in applications
calling the function EVP_PKEY_verify_recover(). Note
this function is not used by OpenSSLcode itself.
(CVE-2010-1633)"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.openssl.org/news/secadv/20100601.txt"
);
script_set_attribute(
attribute:"solution",
value:"Upgrade to OpenSSL 0.9.8o / 1.0.0a or later."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date",value:"2010/06/01");
script_set_attribute(attribute:"patch_publication_date",value:"2010/06/01");
script_set_attribute(attribute:"plugin_publication_date",value:"2010/06/03");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe", value:"cpe:/a:openssl:openssl");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Web Servers");
script_copyright(english:"This script is Copyright (C) 2010-2018 Tenable Network Security, Inc.");
script_dependencie("http_version.nasl");
script_require_ports("Services/www", 80);
script_require_keys("Settings/ParanoidReport");
exit(0);
}
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("backport.inc");
if (report_paranoia < 2)
exit(1, "This plugin only runs if 'Report paranoia' is set to 'Paranoid'.");
port = get_http_port(default:80);
banner = get_backport_banner(banner:get_http_banner(port:port));
if (!banner)
exit(1, "Unable to get the banner from the web server on port "+port+".");
if (!egrep(string:banner, pattern:'^Server:'))
exit(0, "The web server on port "+port+" doesn't return a Server response header.");
if ("OpenSSL/" >!< banner)
exit(0, "The Server response header for the web server on port "+port+" doesn't mention OpenSSL.");
pat = "^Server:.*OpenSSL/([^ ]+)";
version = NULL;
foreach line (split(banner, sep:'\r\n', keep:FALSE))
{
match = eregmatch(pattern:pat, string:line);
if (!isnull(match))
{
version = match[1];
break;
}
}
if (isnull(version))
exit(0, "The web server on port "+port+" doesn't appear to use OpenSSL.");
if (
(version =~ "^0\.9\.([0-7]([^0-9]|$)|8([^a-z0-9]|[a-n]|$))") ||
(version =~ "^1\.0\.0(-beta|$)")
)
{
if (report_verbosity > 0)
{
report =
'\nOpenSSL version '+version+' appears to be running on the remote\n'+
'host based on the following Server response header :\n\n'+
' '+line+'\n';
security_hole(port:port, extra:report);
}
else security_hole(port);
exit(0);
}
else exit(0, 'The web server on port "+port+" uses OpenSSL '+version+', which is not affected.');