Vulnerabilities > CVE-2002-0655 - Buffer Overflow vulnerability in OpenSSL ASCII Representation Of Integers

#TRUSTED 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
#
# (C) Tenable Network Security, Inc.
#

# Thanks to Solar Eclipse <[email protected]>, who did most
# of the work.
#
# Will incidentally cover CVE-2001-1141 and CVE-2000-0535
#


include("compat.inc");

if (description)
{
 script_id(11060);
 script_version("1.61");
 script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/12");

 script_cve_id(
  "CVE-2000-0535",
  "CVE-2001-1141",
  "CVE-2002-0655",
  "CVE-2002-0656",
  "CVE-2002-0657",
  "CVE-2002-0659"
 );
 script_bugtraq_id(1340, 3004, 5361, 5362, 5363, 5364, 5366);
 script_xref(name:"SuSE", value:"SUSE-SA:2002:033");

 script_name(english:"OpenSSL < 0.9.6e / 0.9.7b3 Multiple Remote Vulnerabilities");
 script_summary(english:"Checks for the behavior of OpenSSL");

 script_set_attribute(attribute:"synopsis", value:
"The remote service uses a library that is affected by a buffer
overflow vulnerability.");
 script_set_attribute(attribute:"description", value:
"The remote service seems to be using a version of OpenSSL that is
older than 0.9.6e or 0.9.7-beta3.

Such versions are affected by a buffer overflow that may allow an
attacker to execute arbitrary commands on the remote host with the
privileges of the application itself.");
 script_set_attribute(attribute:"solution", value:"Upgrade to OpenSSL version 0.9.6e / 0.9.7beta3 or later.");
 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:F/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
 script_set_attribute(attribute:"exploit_available", value:"true");
 script_set_attribute(attribute:"exploit_framework_core", value:"true");
 script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
 script_set_attribute(attribute:"canvas_package", value:'CANVAS');

 script_set_attribute(attribute:"plugin_publication_date", value:"2002/08/05");
 script_set_attribute(attribute:"patch_publication_date", value:"2002/07/30");
 script_set_attribute(attribute:"vuln_publication_date", value:"2001/07/10");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_set_attribute(attribute:"cpe", value:"cpe:/a:openssl:openssl");
 script_end_attributes();

 script_category(ACT_MIXED_ATTACK);
 script_copyright(english:"This script is Copyright (C) 2002-2020 Solar Eclipse / Renaud Deraison");
 script_family(english:"Gain a shell remotely");
 script_dependencies("ssl_supported_versions.nasl");
 script_require_keys("SSL/Supported");

 exit(0);
}

include("byte_func.inc");
include("ftp_func.inc");
include("global_settings.inc");
include("kerberos_func.inc");
include("ldap_func.inc");
include("misc_func.inc");
include("nntp_func.inc");
include("smtp_func.inc");
include("ssl_funcs.inc");
include("telnet2_func.inc");

if ( safe_checks() && report_paranoia < 2 ) exit(0);

#------------------------------ Consts ----------------------#
client_hello = raw_string(
0x80, 0x31, 0x01, 0x00,
0x02,  0x00, 0x18,0x00,
0x00,  0x00, 0x10,0x07,
0x00, 0xC0, 0x05, 0x00,
0x80, 0x03, 0x00, 0x80,
0x01, 0x00, 0x80, 0x08,
0x00, 0x80, 0x06, 0x00,
0x40, 0x04, 0x00, 0x80,
0x02, 0x00, 0x80, 0xE4,
0xBD, 0x00, 0x00, 0xA4,
0x41, 0xB6, 0x74, 0x71,
0x2B, 0x27, 0x95, 0x44,
0xC0, 0x3D, 0xC0);


poison = raw_string(
0x80,0x5a,0x2,0x7,
0x0,0xc0,0x0,0x0,
0x0,0x40,0x0,0x10,
0x19,0x53,0xf,0x55,
0x5e,0xaa,0x68,0x71,
0x3,0x27,0x4,0x5a,
0x1f,0x5,0xea,0x33,
0x29,0x5b,0xb9,0x3f,
0x7d,0x28,0xe6,0x4c,
0xd4,0xb3,0x8e,0x36,
0x44,0xb5,0x86,0x6c,
0x6c,0x6,0xc1,0x5c,
0x45,0x73,0xb8,0x11,
0x55,0x23,0x3e,0x2a,
0x52,0xe0,0x52,0x30,
0xda,0xf8,0xee,0x15,
0x79,0xe1,0x3c,0x68,
0x36,0xd1,0x14,0x26,
0xae,0xd4,0x30,0x2,
0x0,0x0,0x0,0x0,
0x4,0x0,0x0,0x0,
0x41,0x41,0x41,0x41,
0x41,0x41,0x41,0x41);


big_poison = raw_string(
0x81, 0xca, 0x2, 0x7,
0x0, 0xc0, 0x0, 0x0,
0x0, 0x40, 0x1, 0x80,
0xa4, 0x20, 0xb4, 0x44,
0xd, 0xe, 0x7c, 0x5,
0xc2, 0x21, 0x28, 0x4d,
0xd3, 0xab, 0x6b, 0x72,
0x10, 0xa3, 0x64, 0x7e,
0x9, 0x7e, 0xe8, 0x28,
0xe, 0x98, 0x5a, 0x5,
0x2f, 0x32, 0xbb, 0xa,
0x3c, 0xe0, 0x58, 0x5a,
0xc5, 0xf1, 0x91, 0x36,
0x1a, 0x27, 0x2c, 0x37,
0x4b, 0xc2, 0xd2, 0x49,
0x28, 0xc4, 0xf1, 0x76,
0x41, 0xe5, 0xa4, 0x2d,
0xe6, 0x9a, 0x55, 0x7e,
0x27, 0x38, 0x89, 0x13,
0x0, 0x0, 0x0, 0x0,
0x4, 0x0, 0x0, 0x0,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41,
0x41, 0x41, 0x41, 0x41);



#-------- The code. We need the check what happens on each port ------------#

moderate_report =
"Note that since safe checks are enabled, this check might be fooled by
non-openssl implementations and produce a false positive.
In doubt, re-execute the scan without the safe checks";

get_kb_item_or_exit("SSL/Supported");

port = get_ssl_ports(fork:TRUE);
if (isnull(port))
  exit(1, "The host does not appear to have any SSL-based services.");

# Find out if the port is open.
if (!get_port_state(port))
  exit(0, "Port " + port + " is not open.");

# Connect to the port, issuing the StartTLS command if necessary.
soc = open_sock_ssl(port);
if (!soc)
  exit(1, "open_sock_ssl() returned NULL for port " + port + ".");

send(socket:soc, data:client_hello);
buf = recv(socket:soc, length:8192);
if(!strlen(buf))exit(0);
send(socket:soc, data:poison);
buf = recv(socket:soc, length:10);
close(soc);
if(safe_checks())
{
if(strlen(buf) > 5)security_hole(port:port, extra: moderate_report);
}
else
{
 if(strlen(buf) > 5)
 {
  # Connect to the port, issuing the StartTLS command if necessary.
  soc = open_sock_ssl(port);
  if (!soc)
    exit(1, "open_sock_ssl() returned NULL for port " + port + ".");

  send(socket:soc, data:client_hello);
  buf = recv(socket:soc, length:8192);
  if(!strlen(buf))exit(0);
  n = send(socket:soc, data:big_poison);
  if ( n != strlen(big_poison) ) exit(0);

  buf = recv(socket:soc, length:4096);
  close(soc);
  if(strlen(buf) == 0)security_hole(port);
 }
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-136. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(14973);
  script_version("1.28");
  script_cvs_date("Date: 2019/08/02 13:32:16");

  script_cve_id("CVE-2002-0655", "CVE-2002-0656", "CVE-2002-0657", "CVE-2002-0659", "CVE-2005-1730");
  script_bugtraq_id(5353, 5361, 5362, 5363, 5364, 5366);
  script_xref(name:"DSA", value:"136");

  script_name(english:"Debian DSA-136-1 : openssl - multiple remote exploits");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The OpenSSL development team has announced that a security audit by
A.L. Digital Ltd and The Bunker, under the DARPA CHATS program, has
revealed remotely exploitable buffer overflow conditions in the
OpenSSL code. Additionally, the ASN1 parser in OpenSSL has a potential
DoS attack independently discovered by Adi Stav and James Yonan.

CAN-2002-0655 references overflows in buffers used to hold ASCII
representations of integers on 64 bit platforms. CAN-2002-0656
references buffer overflows in the SSL2 server implementation (by
sending an invalid key to the server) and the SSL3 client
implementation (by sending a large session id to the client). The SSL2
issue was also noticed by Neohapsis, who have privately demonstrated
exploit code for this issue. CAN-2002-0659 references the ASN1 parser
DoS issue.

These vulnerabilities have been addressed for Debian 3.0 (woody) in
openssl094_0.9.4-6.woody.2, openssl095_0.9.5a-6.woody.1 and
openssl_0.9.6c-2.woody.1.

These vulnerabilities are also present in Debian 2.2 (potato). Fixed
packages are available in openssl094_0.9.4-6.potato.2 and
openssl_0.9.6c-0.potato.4.

A worm is actively exploiting this issue on internet-attached hosts;
we recommend you upgrade your OpenSSL as soon as possible. Note that
you must restart any daemons using SSL. (E.g., ssh or ssl-enabled
apache.) If you are uncertain which programs are using SSL you may
choose to reboot to ensure that all running daemons are using the new
libraries."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2002/dsa-136"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Upgrade the affected openssl package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
  script_set_attribute(attribute:"canvas_package", value:'CANVAS');

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2002/07/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_set_attribute(attribute:"vuln_publication_date", value:"2002/07/30");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"2.2", prefix:"libssl-dev", reference:"0.9.6c-0.potato.4")) flag++;
if (deb_check(release:"2.2", prefix:"libssl0.9.6", reference:"0.9.6c-0.potato.4")) flag++;
if (deb_check(release:"2.2", prefix:"libssl09", reference:"0.9.4-6.potato.2")) flag++;
if (deb_check(release:"2.2", prefix:"openssl", reference:"0.9.6c-0.potato.4")) flag++;
if (deb_check(release:"2.2", prefix:"ssleay", reference:"0.9.6c-0.potato.3")) flag++;
if (deb_check(release:"3.0", prefix:"libssl-dev", reference:"0.9.6c-2.woody.1")) flag++;
if (deb_check(release:"3.0", prefix:"libssl0.9.6", reference:"0.9.6c-2.woody.1")) flag++;
if (deb_check(release:"3.0", prefix:"libssl09", reference:"0.9.4-6.woody.1")) flag++;
if (deb_check(release:"3.0", prefix:"libssl095a", reference:"0.9.5a-6.woody.1")) flag++;
if (deb_check(release:"3.0", prefix:"openssl", reference:"0.9.6c-2.woody.1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");