Vulnerabilities > CVE-2012-2971

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
CWE-94
nessus
NVD
Published: 2012-10-20
Updated: 2023-11-07

Summary

The server in CA ARCserve Backup r12.5, r15, and r16 on Windows does not properly process RPC requests, which allows remote attackers to execute arbitrary code or cause a denial of service via a crafted request.

Vulnerable Configurations

Part Description Count
OS
Microsoft
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Manipulating User-Controlled Variables
    This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

Nessus

NASL familyWindows
NASL idARCSERVE_BACKUP_CA20121018.NASL
descriptionThe version of CA ARCserve Backup installed on the remote Windows host is potentially affected by multiple vulnerabilities : - A flaw exists with how RPC requests are processed that could lead to code execution on server installations. (CVE-2012-2971) - A flaw exists with how RPC requests are processed that could cause the service to crash. Note that this vulnerability affects both server and agent installations. (CVE-2012-2972)
last seen2020-06-01
modified2020-06-02
plugin id62812
published2012-11-05
reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/62812
titleCA ARCserve Backup Multiple Vulnerabilities (CA20121018) (credentialed check)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(62812);
  script_version("1.6");
  script_cvs_date("Date: 2019/12/04");

  script_cve_id("CVE-2012-2971", "CVE-2012-2972");
  script_bugtraq_id(56116);
  script_xref(name:"IAVB", value:"2012-B-0106");

  script_name(english:"CA ARCserve Backup Multiple Vulnerabilities (CA20121018) (credentialed check)");
  script_summary(english:"Checks version of CA ARCserve Backup, or ARCserve Backup Agent");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has a backup application installed that is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of CA ARCserve Backup installed on the remote Windows host
is potentially affected by multiple vulnerabilities :

  - A flaw exists with how RPC requests are processed that
    could lead to code execution on server installations.
    (CVE-2012-2971)

  - A flaw exists with how RPC requests are processed that
    could cause the service to crash.  Note that this
    vulnerability affects both server and agent
    installations. (CVE-2012-2972)");
  # https://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID={F9EEA31E-8089-423E-B746-41B5C9DD2AC1}
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5ad7ac22");
  script_set_attribute(attribute:"solution", value:
"Apply the patch referenced in the advisory.");
  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:"cvss_score_source", value:"CVE-2012-2971");

  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:"2012/10/18");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/10/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/11/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ca:arcserve_backup");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:ca:arcserve_backup_client_agent_for_windows");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("arcserve_backup_server_installed.nasl", "arcserve_backup_agent_installed.nasl");
  script_require_keys("SMB/CA ARCserve Backup/Installed");
  script_require_ports(139, 445);

  exit(0);
}

include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("misc_func.inc");
include("audit.inc");

BUILD_INFO_ERR = 'Unexpected Build Info';

function display_dword (dword, nox)
{
 local_var tmp;

 if (isnull(nox) || (nox == FALSE))
   tmp = "0x";
 else
   tmp = "";

 return string (tmp,
               toupper(
                  hexstr(
                    raw_string(
                               (dword >>> 24) & 0xFF,
                               (dword >>> 16) & 0xFF,
                               (dword >>> 8) & 0xFF,
                               dword & 0xFF
                              )
                        )
                      )
               );
}

function getbuildinfo (file)
{
  local_var fh, ret, varfileinfo, translation, stringfileinfo, data, date;
  local_var children;
  fh = CreateFile(
    file:file,
    desired_access:GENERIC_READ,
    file_attributes:FILE_ATTRIBUTE_NORMAL,
    share_mode:FILE_SHARE_READ,
    create_disposition:OPEN_EXISTING
  );
  if (!isnull(fh))
  {
    ret = GetFileVersionEx(handle:fh);
    if (!isnull(ret)) children = ret['Children'];
    if (!isnull(children))
    {
      varfileinfo = children['VarFileInfo'];
      if (!isnull(varfileinfo))
      {
        translation =
          (get_word (blob:varfileinfo['Translation'], pos:0) << 16) +
          get_word (blob:varfileinfo['Translation'], pos:2);
        translation = toupper(display_dword(dword:translation, nox:TRUE));
      }
      stringfileinfo = children['StringFileInfo'];
      if (!isnull(stringfileinfo) && !isnull(translation))
      {
        data = stringfileinfo[translation];
        if (!isnull(data) && !isnull(data['Comments']))
        {
          if (data['Comments'] =~ '^Build [0-9\\.]+ [A-Za-z]+ [0-9/]+$')
          {
            ret = make_array();
            ret['error'] = 0;
            ret['build'] = ereg_replace(pattern:'^Build ([0-9\\.]+).*', replace:"\1", string:data['Comments']);
            date = ereg_replace(pattern:'^Build [0-9\\.]+ [A-Za-z]+ (.*)', replace:"\1", string:data['Comments']);
            date = split(date, sep:'/', keep:FALSE);
            ret['year'] = date[2];
            ret['month'] = date[0];
            ret['day'] = date[1];
          }
          else
          {
            ret['error'] = BUILD_INFO_ERR;
          }
          return ret;
        }
      }
    }
    CloseFile(handle:fh);
  }
  return NULL;
}

errors = make_list();
servversion = get_kb_item('SMB/CA ARCserve Backup Server/Version');
agentversion = get_kb_item('SMB/CA ARCserve Backup Agent/Version');

if (isnull(servversion) && isnull(agentversion)) exit(0, 'The \'SMB/CA ARCserve Backup Server/Version\' and \'SMB/CA ARCserve Backup Agent/Version\' KB items are missing.');

if (!isnull(servversion)) servpath = get_kb_item_or_exit('SMB/CA ARCserve Backup Server/Path');
if (!isnull(agentversion)) agentpath = get_kb_item_or_exit('SMB/CA ARCserve Backup Agent/Path');

# First check if we can determine the status based on the version
# of the software
info = '';
servfix = NULL;
agentfix = NULL;
if (servversion)
{
  if ((servversion =~ '^12\\.5\\.') && (ver_compare(ver:servversion, fix:'12.5.5900.32') == -1)) servfix = '12.5.5900.32 with RO49917';
  else if ((servversion =~ '^15\\.') && (ver_compare(ver:servversion, fix:'15.1.6300.24') == -1)) servfix = '15.1.6300.24 with RO49916';
  else if ((servversion =~ '^16\\.') && (ver_compare(ver:servversion, fix:'16.0.6838.1') == -1)) servfix = '16.0.6838.1 with RO49750';
}
if (agentversion)
{
  if ((agentversion =~ '^12\\.5\\.') && (ver_compare(ver:agentversion, fix:'12.5.5900.32') == -1)) agentfix = '12.5.5900.32 with RO49917';
  else if ((agentversion =~ '^15\\.') && (ver_compare(ver:agentversion, fix:'15.1.6300.24') == -1)) agentfix = '15.1.6300.24 with RO49916';
  else if ((agentversion =~ '^16\\.') && (ver_compare(ver:agentversion, fix:'16.0.6838.1') == -1)) agentfix = '16.0.6838.1 with RO49750';
}

if (servfix || agentfix)
{
  if (servfix)
  {
    info +=
      '\n  Product           : CA ARCserve Backup Server' +
      '\n  Path              : ' + servpath +
      '\n  Installed version : ' + servversion +
      '\n  Fixed version     : ' + servfix + '\n';
  }
  if (agentfix)
  {
    info +=
      '\n  Product           : CA ARCserve Backup Agent' +
      '\n  Path              : ' + agentpath +
      '\n  Installed version : ' + agentversion +
      '\n  Fixed version     : ' + agentfix + '\n';
  }
}

# If we didn't detect the Server or Agent as vulnerable, check further
extraserv = '';
extraagent = '';
if ((isnull(servfix) && !isnull(servversion)) || (isnull(agentfix) && !isnull(agentversion)))
{
  name    = kb_smb_name();
  port    = kb_smb_transport();
  #if (!get_port_state(port)) audit(AUDIT_PORT_CLOSED, port);
  login   = kb_smb_login();
  pass    = kb_smb_password();
  domain  = kb_smb_domain();

  #soc = open_sock_tcp(port);
  #if (!soc) audit(AUDIT_SOCK_FAIL, port);
  #session_init(socket:soc, hostname:name);

  if(!smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');

  hcf_init = TRUE;
  if (isnull(servfix) && !isnull(servversion))
  {
    share = hotfix_path2share(path:servpath);
    rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
    if (rc != 1)
    {
      NetUseDel();
      audit(AUDIT_SHARE_FAIL, share);
    }

    if (servversion =~ '^12\\.5\\.')
    {
      ver = hotfix_get_fversion(path:servpath+"\as6rpc.dll");
      if (ver['error'] != HCF_OK)
        errors = make_list(errors, 'Failed to get the version of \''+servpath+'\'as6rpc.dll.');
      else
      {
        servversion = join(ver['value'], sep:'.');
        extraserv = 'as6rpc.dll';
        if (ver_compare(ver:servversion, fix:'12.5.5900.37') == -1)
        {
          info +=
            '\n  Product           : CA ARCserve Backup Server' +
            '\n  Path              : ' + servpath +
            '\n  File              : as6rpc.dll' +
            '\n  Installed version : ' + servversion +
            '\n  Fixed version     : 12.5.5900.37\n';
         }
      }
    }
    else if (servversion =~ '^15\\.')
    {
      dll = ereg_replace(pattern:'^[A-Za-z]:(.*)', replace:"\1\as6rpc.dll", string:servpath);
      res = getbuildinfo(file:dll);
      if (!isnull(res))
      {
        if (res['error'] == 0)
        {
          servversion += ' (' + res['month'] + '/' + res['day'] + '/' + res['year'] + ')';
          extraserv = 'as6rpc.dll';
          if (ver_compare(ver:res['build'], fix:'6300.24') == -1 ||
            (ver_compare(ver:res['build'], fix:'6300.24') == 0 && int(res['year']+res['month']+res['day']) < 20120901)
          )
          {
            info +=
              '\n  Product                  : CA ARCserve Backup Server' +
              '\n  Path                     : ' + servpath +
              '\n  File                     : as6rpc.dll' +
              '\n  Installed version (date) : ' + servversion +
              '\n  Fixed version (date)     : 15.1.6300.24 (09/01/2012) \n';
          }
        }
        else if (BUILD_INFO_ERR >< res['error']) errors = make_list('The build info from \'' + servpath + '\'as6rpc.dll contained an unexpected value.');
      }
    }
    else if (servversion =~ '^16\\.')
    {
      ver = hotfix_get_fversion(path:servpath+"\as6rpc.dll");
      if (ver['error'] != HCF_OK)
        errors = make_list(errors, 'Failed to get the version of \''+servpath+'\'as6rpc.dll');
      else
      {
        servversion = join(ver['value'], sep:'.');
        extraserv = 'as6rpc.dll';
        if (ver_compare(ver:servversion, fix:'16.0.6839.1') == -1)
        {
          info +=
            '\n  Product           : CA ARCserve Backup Agent' +
            '\n  Path              : ' + servpath +
            '\n  File              : as6rpc.dll' +
            '\n  Installed version : ' + servversion +
            '\n  Fixed version     : 16.0.6839.1\n';
        }
      }
    }
  }
  if (isnull(agentfix) && !isnull(agentversion))
  {
    if (agentversion =~ '^12\\.5\\.')
    {
      ver = hotfix_get_fversion(path:agentpath+"\as6rpc.dll");
      if (ver['error'] != HCF_OK)
        errors = make_list(errors, 'Failed to get the version of \''+servpath+'\'as6rpc.dll.');
      else
      {
        agentversion = join(ver['value'], sep:'.');
        extraagent = 'as6rpc.dll';
        if (ver_compare(ver:agentversion, fix:'12.5.5900.37') == -1)
        {
          info +=
            '\n  Product            : CA ARCserve Backup Server' +
            '\n  Path               : ' + agentpath +
            '\n  File               : as6rpc.dll' +
            '\n  Installed version : ' + agentversion +
            '\n  Fixed version      : 12.5.5900.37\n';
         }
      }
    }
    else if (agentversion =~ '^15\\.')
    {
      dll = ereg_replace(pattern:'^[A-Za-z]:(.*)', replace:"\1\as6rpc.dll", string:agentpath);
      res = getbuildinfo(file:dll);
      if (!isnull(res))
      {
        if (res['error'] == 0)
        {
          agentversion += ' (' + res['month'] + '/' + res['day'] + '/' + res['year'] + ')';
          extraagent = 'as6rpc.dll';
          if (ver_compare(ver:res['build'], fix:'6300.24') == -1 ||
            (ver_compare(ver:res['build'], fix:'6300.24') == 0 && int(res['year']+res['month']+res['day']) < 20120901)
          )
          {
            info +=
              '\n  Product                  : CA ARCserve Backup Server' +
              '\n  Path                     : ' + agentpath +
              '\n  File                     : as6rpc.dll' +
              '\n  Installed version (date) : ' + agentversion +
              '\n  Fixed version (date)     : 15.1.6300.24 (09/01/2012) \n';
          }
        }
        else if (BUILD_INFO_ERR >< res['error']) errors = make_list('The build info from \'' + servpath + '\'as6rpc.dll contained an unexpected value.');
      }
    }
    else if (servversion =~ '^16\\.')
    {
      ver = hotfix_get_fversion(path:agentpath+"\as6rpc.dll");
      if (ver['error'] != HCF_OK)
        errors = make_list(errors, 'Failed to get the version of \''+servpath+'\'as6rpc.dll');
      else
      {
        agentversion = join(ver['value'], sep:'.');
        extraagent = 'as6rpc.dll';
        if (ver_compare(ver:servversion, fix:'16.0.6839.1') == -1)
        {
          info +=
            '\n  Product           : CA ARCserve Backup Agent' +
            '\n  Path              : ' + agentpath +
            '\n  File              : as6rpc.dll' +
            '\n  Installed version : ' + agentversion +
            '\n  Fixed version     : 16.0.6839.1\n';
        }
      }
    }
  }
  hotfix_check_fversion_end();
}

if (info)
{
  if (report_verbosity > 0)
    security_hole(port:port, extra:info);
  else security_hole(port);

  if (max_index(errors)) exit(1, 'The results may be incomplete because of one or more errors verifying installs.');
  else exit(0);
}
else if (max_index(errors))
{
  if (max_index(errors) == 1) errmsg = errors[0];
  else errmsg = 'Errors were encountered verifying installs : \n ' + join(errors, sep:'\n ');

  exit(1, errmsg);
}
else
{
  if (servversion && agentversion)
  {
    and = ' and ';
    be = ' are ';
  }
  else
  {
    and = '';
    be = ' is ';
  }
  if (servversion)
  {
    info += 'CA ARCserve Backup Server';
    if (extraserv)
      info += ' with ' + extraserv;
    info += ' version ' + servversion;
  }
  if (agentversion)
  {
    info += and + 'CA ARCserve Backup Agent';
    if (extraagent)
      info += ' with ' + extraagent;
    info += ' version ' + agentversion;
  }

  info += be + 'installed and, therefore,' + be + 'not affected.';
  exit(0, info);
}

Saint

bid56116
descriptionCA ARCserve Backup Authentication service invalid virtual function call
idmisc_arcservecategory_backuprpc
osvdb86416
titleca_arcserve_backup_auth_virtual_function
typeremote

References