CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.9%
According to its self-reported version number, the Tenable Nessus application running on the remote host is 6.x prior to 6.9. It is, therefore, affected by multiple vulnerabilities :
Multiple integer overflow conditions exist in the OpenSSL component in s3_srvr.c, ssl_sess.c, and t1_lib.c due to improper use of pointer arithmetic for heap-buffer boundary checks. An unauthenticated, remote attacker can exploit this to cause a denial of service.
(CVE-2016-2177)
An information disclosure vulnerability exists in the OpenSSL component in the dsa_sign_setup() function in dsa_ossl.c due to a failure to properly ensure the use of constant-time operations. An unauthenticated, remote attacker can exploit this, via a timing side-channel attack, to disclose DSA key information. (CVE-2016-2178)
A denial of service vulnerability exists in the OpenSSL component in the DTLS implementation due to a failure to properly restrict the lifetime of queue entries associated with unused out-of-order messages. An unauthenticated, remote attacker can exploit this, by maintaining multiple crafted DTLS sessions simultaneously, to exhaust memory. (CVE-2016-2179)
An out-of-bounds read error exists in the OpenSSL component in the X.509 Public Key Infrastructure Time-Stamp Protocol (TSP) implementation. An unauthenticated, remote attacker can exploit this, via a crafted time-stamp file that is mishandled by the ‘openssl ts’ command, to cause denial of service or to disclose sensitive information. (CVE-2016-2180)
A denial of service vulnerability exists in the OpenSSL component in the Anti-Replay feature in the DTLS implementation due to improper handling of epoch sequence numbers in records. An unauthenticated, remote attacker can exploit this, via spoofed DTLS records, to cause legitimate packets to be dropped. (CVE-2016-2181)
An overflow condition exists in the OpenSSL component in the BN_bn2dec() function in bn_print.c due to improper validation of user-supplied input when handling BIGNUM values. An unauthenticated, remote attacker can exploit this to crash the process. (CVE-2016-2182)
A vulnerability exists, known as SWEET32, in the OpenSSL component in the 3DES and Blowfish algorithms due to the use of weak 64-bit block ciphers by default. A man-in-the-middle attacker who has sufficient resources can exploit this vulnerability, via a ‘birthday’ attack, to detect a collision that leaks the XOR between the fixed secret and a known plaintext, allowing the disclosure of the secret text, such as secure HTTPS cookies, and possibly resulting in the hijacking of an authenticated session. (CVE-2016-2183)
A flaw exists in the OpenSSL component in the tls_decrypt_ticket() function in t1_lib.c due to improper handling of ticket HMAC digests.
An unauthenticated, remote attacker can exploit this, via a ticket that is too short, to crash the process, resulting in a denial of service. (CVE-2016-6302)
An integer overflow condition exists in the OpenSSL component in the MDC2_Update() function in mdc2dgst.c due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a heap-based buffer overflow, resulting in a denial of service condition or possibly the execution of arbitrary code. (CVE-2016-6303)
A flaw exists in the OpenSSL component in the ssl_parse_clienthello_tlsext() function in t1_lib.c due to improper handling of overly large OCSP Status Request extensions from clients. An unauthenticated, remote attacker can exploit this, via large OCSP Status Request extensions, to exhaust memory resources, resulting in a denial of service condition. (CVE-2016-6304)
A flaw exists in the OpenSSL component in the SSL_peek() function in rec_layer_s3.c due to improper handling of empty records. An unauthenticated, remote attacker can exploit this, by triggering a zero-length record in an SSL_peek call, to cause an infinite loop, resulting in a denial of service condition. (CVE-2016-6305)
An out-of-bounds read error exists in the OpenSSL component in the certificate parser that allows an unauthenticated, remote attacker to cause a denial of service via crafted certificate operations.
(CVE-2016-6306)
A denial of service vulnerability exists in the OpenSSL component in the state-machine implementation due to a failure to check for an excessive length before allocating memory. An unauthenticated, remote attacker can exploit this, via a crafted TLS message, to exhaust memory resources. (CVE-2016-6307)
A denial of service vulnerability exists in the OpenSSL component in the DTLS implementation due to improper handling of excessively long DTLS messages. An unauthenticated, remote attacker can exploit this, via a crafted DTLS message, to exhaust available memory resources. (CVE-2016-6308)
A remote code execution vulnerability exists in the OpenSSL component in the read_state_machine() function in statem.c due to improper handling of messages larger than 16k. An unauthenticated, remote attacker can exploit this, via a specially crafted message, to cause a use-after-free error, resulting in a denial of service condition or possibly the execution of arbitrary code.
(CVE-2016-6309)
A denial of service vulnerability exists in the OpenSSL component in x509_vfy.c due to improper handling of certificate revocation lists (CRLs). An unauthenticated, remote attacker can exploit this, via a specially crafted CRL, to cause a NULL pointer dereference, resulting in a crash of the service. (CVE-2016-7052)
A cross-site scripting (XSS) vulnerability exists due to improper validation of user-supplied input. An authenticated, remote attacker can exploit this, via a specially crafted request, to execute arbitrary script code in a user’s browser session. (CVE-2016-9260)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(97192);
script_version("1.8");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/12");
script_cve_id(
"CVE-2016-2177",
"CVE-2016-2178",
"CVE-2016-2179",
"CVE-2016-2180",
"CVE-2016-2181",
"CVE-2016-2182",
"CVE-2016-2183",
"CVE-2016-6302",
"CVE-2016-6303",
"CVE-2016-6304",
"CVE-2016-6305",
"CVE-2016-6306",
"CVE-2016-6307",
"CVE-2016-6308",
"CVE-2016-6309",
"CVE-2016-7052",
"CVE-2016-9260"
);
script_bugtraq_id(
91081,
91319,
92117,
92557,
92628,
92630,
92982,
92984,
92987,
93149,
93150,
93151,
93152,
93153,
93171,
93177,
95772
);
script_name(english:"Tenable Nessus 6.x < 6.9 Multiple Vulnerabilities (TNS-2016-16) (SWEET32)");
script_set_attribute(attribute:"synopsis", value:
"An application running on the remote host is affected by multiple
vulnerabilities.");
script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the Tenable Nessus
application running on the remote host is 6.x prior to 6.9. It is,
therefore, affected by multiple vulnerabilities :
- Multiple integer overflow conditions exist in the
OpenSSL component in s3_srvr.c, ssl_sess.c, and t1_lib.c
due to improper use of pointer arithmetic for
heap-buffer boundary checks. An unauthenticated, remote
attacker can exploit this to cause a denial of service.
(CVE-2016-2177)
- An information disclosure vulnerability exists in the
OpenSSL component in the dsa_sign_setup() function in
dsa_ossl.c due to a failure to properly ensure the use
of constant-time operations. An unauthenticated, remote
attacker can exploit this, via a timing side-channel
attack, to disclose DSA key information. (CVE-2016-2178)
- A denial of service vulnerability exists in the OpenSSL
component in the DTLS implementation due to a failure to
properly restrict the lifetime of queue entries
associated with unused out-of-order messages. An
unauthenticated, remote attacker can exploit this, by
maintaining multiple crafted DTLS sessions
simultaneously, to exhaust memory. (CVE-2016-2179)
- An out-of-bounds read error exists in the OpenSSL
component in the X.509 Public Key Infrastructure
Time-Stamp Protocol (TSP) implementation. An
unauthenticated, remote attacker can exploit this, via a
crafted time-stamp file that is mishandled by the
'openssl ts' command, to cause denial of service or to
disclose sensitive information. (CVE-2016-2180)
- A denial of service vulnerability exists in the OpenSSL
component in the Anti-Replay feature in the DTLS
implementation due to improper handling of epoch
sequence numbers in records. An unauthenticated, remote
attacker can exploit this, via spoofed DTLS records, to
cause legitimate packets to be dropped. (CVE-2016-2181)
- An overflow condition exists in the OpenSSL component in
the BN_bn2dec() function in bn_print.c due to improper
validation of user-supplied input when handling BIGNUM
values. An unauthenticated, remote attacker can exploit
this to crash the process. (CVE-2016-2182)
- A vulnerability exists, known as SWEET32, in the OpenSSL
component in the 3DES and Blowfish algorithms due to the
use of weak 64-bit block ciphers by default. A
man-in-the-middle attacker who has sufficient resources
can exploit this vulnerability, via a 'birthday' attack,
to detect a collision that leaks the XOR between the
fixed secret and a known plaintext, allowing the
disclosure of the secret text, such as secure HTTPS
cookies, and possibly resulting in the hijacking of an
authenticated session. (CVE-2016-2183)
- A flaw exists in the OpenSSL component in the
tls_decrypt_ticket() function in t1_lib.c due to
improper handling of ticket HMAC digests.
An unauthenticated, remote attacker can exploit this,
via a ticket that is too short, to crash the process,
resulting in a denial of service. (CVE-2016-6302)
- An integer overflow condition exists in the OpenSSL
component in the MDC2_Update() function in mdc2dgst.c
due to improper validation of user-supplied input. An
unauthenticated, remote attacker can exploit this to
cause a heap-based buffer overflow, resulting in a
denial of service condition or possibly the execution of
arbitrary code. (CVE-2016-6303)
- A flaw exists in the OpenSSL component in the
ssl_parse_clienthello_tlsext() function in t1_lib.c due
to improper handling of overly large OCSP Status Request
extensions from clients. An unauthenticated, remote
attacker can exploit this, via large OCSP Status Request
extensions, to exhaust memory resources, resulting in a
denial of service condition. (CVE-2016-6304)
- A flaw exists in the OpenSSL component in the SSL_peek()
function in rec_layer_s3.c due to improper handling of
empty records. An unauthenticated, remote attacker can
exploit this, by triggering a zero-length record in an
SSL_peek call, to cause an infinite loop, resulting in a
denial of service condition. (CVE-2016-6305)
- An out-of-bounds read error exists in the OpenSSL
component in the certificate parser that allows an
unauthenticated, remote attacker to cause a denial of
service via crafted certificate operations.
(CVE-2016-6306)
- A denial of service vulnerability exists in the OpenSSL
component in the state-machine implementation due to a
failure to check for an excessive length before
allocating memory. An unauthenticated, remote attacker
can exploit this, via a crafted TLS message, to exhaust
memory resources. (CVE-2016-6307)
- A denial of service vulnerability exists in the OpenSSL
component in the DTLS implementation due to improper
handling of excessively long DTLS messages. An
unauthenticated, remote attacker can exploit this, via a
crafted DTLS message, to exhaust available memory
resources. (CVE-2016-6308)
- A remote code execution vulnerability exists in the
OpenSSL component in the read_state_machine() function
in statem.c due to improper handling of messages larger
than 16k. An unauthenticated, remote attacker can
exploit this, via a specially crafted message, to cause
a use-after-free error, resulting in a denial of service
condition or possibly the execution of arbitrary code.
(CVE-2016-6309)
- A denial of service vulnerability exists in the OpenSSL
component in x509_vfy.c due to improper handling of
certificate revocation lists (CRLs). An unauthenticated,
remote attacker can exploit this, via a specially
crafted CRL, to cause a NULL pointer dereference,
resulting in a crash of the service. (CVE-2016-7052)
- A cross-site scripting (XSS) vulnerability exists due to
improper validation of user-supplied input. An
authenticated, remote attacker can exploit this, via a
specially crafted request, to execute arbitrary script
code in a user's browser session. (CVE-2016-9260)");
script_set_attribute(attribute:"see_also", value:"https://www.tenable.com/security/tns-2016-16");
script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20160922.txt");
script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/news/secadv/20160926.txt");
script_set_attribute(attribute:"see_also", value:"https://sweet32.info");
script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/blog/blog/2016/08/24/sweet32/");
script_set_attribute(attribute:"solution", value:
"Upgrade to Tenable Nessus version 6.9 or later.");
script_set_attribute(attribute:"agent", value:"all");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
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:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-6309");
script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"in_the_news", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/05");
script_set_attribute(attribute:"patch_publication_date", value:"2016/10/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/02/15");
script_set_attribute(attribute:"plugin_type", value:"combined");
script_set_attribute(attribute:"cpe", value:"cpe:/a:tenable:nessus");
script_set_attribute(attribute:"thorough_tests", value:"true");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"CGI abuses : XSS");
script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("nessus_detect.nasl", "nessus_installed_win.nbin", "nessus_installed_linux.nbin", "macos_nessus_installed.nbin");
script_require_keys("installed_sw/Tenable Nessus");
exit(0);
}
include('vcf.inc');
include('vcf_extras.inc');
var app_info = vcf::combined_get_app_info(app:'Tenable Nessus');
vcf::check_granularity(app_info:app_info, sig_segments:3);
var constraints = [
{ 'min_version' : '6.0.0', 'fixed_version' : '6.9.0' }
];
vcf::check_version_and_report(
app_info:app_info,
constraints:constraints,
severity:SECURITY_WARNING,
flags:{'xss':TRUE}
);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2177
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2178
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2179
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2180
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2181
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2182
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2183
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6302
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6303
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6304
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6305
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6306
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6307
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6308
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6309
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7052
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9260
sweet32.info
www.openssl.org/blog/blog/2016/08/24/sweet32/
www.openssl.org/news/secadv/20160922.txt
www.openssl.org/news/secadv/20160926.txt
www.tenable.com/security/tns-2016-16
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
98.9%