Vulnerabilities > CVE-2008-0892 - Improper Input Validation vulnerability in multiple products

047910
CVSS 9.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
SINGLE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
redhat
red-hat
CWE-20
critical
nessus

Summary

The replication monitor CGI script (repl-monitor-cgi.pl) in Red Hat Administration Server, as used by Red Hat Directory Server 8.0 EL4 and EL5, allows remote attackers to execute arbitrary commands.

Vulnerable Configurations

Part Description Count
Application
Redhat
1
OS
Red_Hat
2
OS
Redhat
1

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyCGI abuses
    NASL idRH_DIRSERV_REMOTE_CMD_EXEC.NASL
    descriptionThe remote host is running RedHat or Fedora Directory Server Admin Service. The version of this software installed on the remote host is vulnerable to remote command execution flaw through the argument
    last seen2020-06-01
    modified2020-06-02
    plugin id32032
    published2008-04-23
    reporterThis script is Copyright (C) 2008-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/32032
    titleRed Hat Administration Server (redhat-ds-admin) Multiple Remote Vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if(description)
    {
     script_id(32032);
     script_version("1.14");
    
     script_cve_id("CVE-2008-0892","CVE-2008-0893");
     script_bugtraq_id(28802);
     script_xref(name:"RHSA", value:"2008:0199");
     script_xref(name:"RHSA", value:"2008:0201");
      
     script_name(english:"Red Hat Administration Server (redhat-ds-admin) Multiple Remote Vulnerabilities");
     
     script_set_attribute(attribute:"synopsis", value:
    "The remote web server contains a CGI script that is prone to arbitrary
    command execution." );
     script_set_attribute(attribute:"description", value:
    "The remote host is running RedHat or Fedora Directory Server Admin
    Service. 
    
    The version of this software installed on the remote host is
    vulnerable to remote command execution flaw through the argument
    'admurl' of the script '/bin/admin/admin/bin/download'.  A malicious
    user could exploit this flaw to execute arbitrary commands on the
    remote host." );
     script_set_attribute(attribute:"solution", value:
    "Upgrade to ds-admin 1.1.4 or later." );
     script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:"No exploit is required");
     script_set_attribute(attribute:"exploit_available", value:"false");
     script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
     script_set_attribute(attribute:"canvas_package", value:'D2ExploitPack');
     script_cwe_id(20, 264);
     script_set_attribute(attribute:"plugin_publication_date", value: "2008/04/23");
     script_cvs_date("Date: 2018/07/27 18:38:14");
     script_set_attribute(attribute:"plugin_type", value:"remote");
     script_end_attributes();
     
     script_summary(english:"Checks for RedHat/Fedora Directory Server repl-monitor-cgi.pl remote command execution flaw");
     
     script_category(ACT_ATTACK);
     
     script_copyright(english:"This script is Copyright (C) 2008-2018 Tenable Network Security, Inc.");
     script_family(english:"CGI abuses");
    
     script_dependencie("http_version.nasl");
     script_exclude_keys("Settings/disable_cgi_scanning");
     script_require_ports("Services/www", 9830);
     exit(0);
    }
    
    include("global_settings.inc");
    include("misc_func.inc");
    include("http.inc");
    
    banner = get_http_banner(port:9830);
    if ("Server: Apache" >!< banner) exit(0);
    
    http_check_remote_code (
                            default_port:9830,
    			unique_dir:"/dist",
    			check_request:'/repl-monitor-cgi.pl?admurl=toto&plop=";id;"',
    			extra_check:"<p>Error: Missing configuration file.",
    			check_result:"uid=[0-9]+.*gid=[0-9]+.*",
    			command:"id"
    			);
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2008-3214.NASL
    descriptionThis release addresses two security vulerabilities in the package: - shell command injection in CGI replication monitor (CVE-2008-0892) - unrestricted access to CGI scripts (CVE-2008-0893) Fix Description: Remove ScriptAlias for bin/admin/admin/bin - do not use that directory for CGI URIs - use only protected URIs for CGIs requiring authentication Remove most CGI parameters from repl-monitor-cgi.pl - user must supply replmon.conf in the admin server config directory instead of passing in this pathname - repl-monitor-cgi.pl does not use system to call repl-monitor.pl, it
    last seen2020-06-01
    modified2020-06-02
    plugin id32036
    published2008-04-25
    reporterThis script is Copyright (C) 2008-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/32036
    titleFedora 7 : fedora-ds-admin-1.1.4-1.fc7 (2008-3214)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory 2008-3214.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(32036);
      script_version ("1.15");
      script_cvs_date("Date: 2019/08/02 13:32:27");
    
      script_cve_id("CVE-2008-0892", "CVE-2008-0893");
      script_xref(name:"FEDORA", value:"2008-3214");
    
      script_name(english:"Fedora 7 : fedora-ds-admin-1.1.4-1.fc7 (2008-3214)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This release addresses two security vulerabilities in the package: -
    shell command injection in CGI replication monitor (CVE-2008-0892) -
    unrestricted access to CGI scripts (CVE-2008-0893) Fix Description:
    Remove ScriptAlias for bin/admin/admin/bin - do not use that directory
    for CGI URIs - use only protected URIs for CGIs requiring
    authentication Remove most CGI parameters from repl-monitor-cgi.pl -
    user must supply replmon.conf in the admin server config directory
    instead of passing in this pathname - repl-monitor-cgi.pl does not use
    system to call repl-monitor.pl, it 'includes' that script (using perl
    import).
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=437301"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=437320"
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2008-April/009405.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?11d70b74"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected fedora-ds-admin package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A: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_canvas", value:"true");
      script_set_attribute(attribute:"canvas_package", value:'D2ExploitPack');
      script_cwe_id(20, 264);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:fedora-ds-admin");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:7");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2008/04/21");
      script_set_attribute(attribute:"plugin_publication_date", value:"2008/04/25");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2008-2019 Tenable Network Security, Inc.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! ereg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 7.x", "Fedora " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
    
    flag = 0;
    if (rpm_check(release:"FC7", reference:"fedora-ds-admin-1.1.4-1.fc7")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "fedora-ds-admin");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2008-3220.NASL
    descriptionThis release addresses two security vulerabilities in the package: - shell command injection in CGI replication monitor (CVE-2008-0892) - unrestricted access to CGI scripts (CVE-2008-0893) Fix Description: Remove ScriptAlias for bin/admin/admin/bin - do not use that directory for CGI URIs - use only protected URIs for CGIs requiring authentication Remove most CGI parameters from repl-monitor-cgi.pl - user must supply replmon.conf in the admin server config directory instead of passing in this pathname - repl-monitor-cgi.pl does not use system to call repl-monitor.pl, it
    last seen2020-06-01
    modified2020-06-02
    plugin id32037
    published2008-04-25
    reporterThis script is Copyright (C) 2008-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/32037
    titleFedora 8 : fedora-ds-admin-1.1.4-1.fc8 (2008-3220)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory 2008-3220.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(32037);
      script_version ("1.15");
      script_cvs_date("Date: 2019/08/02 13:32:27");
    
      script_cve_id("CVE-2008-0892", "CVE-2008-0893");
      script_xref(name:"FEDORA", value:"2008-3220");
    
      script_name(english:"Fedora 8 : fedora-ds-admin-1.1.4-1.fc8 (2008-3220)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This release addresses two security vulerabilities in the package: -
    shell command injection in CGI replication monitor (CVE-2008-0892) -
    unrestricted access to CGI scripts (CVE-2008-0893) Fix Description:
    Remove ScriptAlias for bin/admin/admin/bin - do not use that directory
    for CGI URIs - use only protected URIs for CGIs requiring
    authentication Remove most CGI parameters from repl-monitor-cgi.pl -
    user must supply replmon.conf in the admin server config directory
    instead of passing in this pathname - repl-monitor-cgi.pl does not use
    system to call repl-monitor.pl, it 'includes' that script (using perl
    import).
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=437301"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=437320"
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2008-April/009411.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?48c04c5f"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected fedora-ds-admin package."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A: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_canvas", value:"true");
      script_set_attribute(attribute:"canvas_package", value:'D2ExploitPack');
      script_cwe_id(20, 264);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:fedora-ds-admin");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:8");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2008/04/21");
      script_set_attribute(attribute:"plugin_publication_date", value:"2008/04/25");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2008-2019 Tenable Network Security, Inc.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! ereg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 8.x", "Fedora " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu);
    
    flag = 0;
    if (rpm_check(release:"FC8", reference:"fedora-ds-admin-1.1.4-1.fc8")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "fedora-ds-admin");
    }
    

Redhat

advisories
  • rhsa
    idRHSA-2008:0199
  • rhsa
    idRHSA-2008:0201
rpms
  • redhat-ds-0:7.1SP5-8.RHEL3
  • redhat-ds-0:7.1SP5-8.RHEL4
  • redhat-ds-admin-0:8.0.0-6.el4dsrv
  • redhat-ds-admin-0:8.0.0-6.el5dsrv
  • redhat-ds-admin-debuginfo-0:8.0.0-6.el4dsrv
  • redhat-ds-admin-debuginfo-0:8.0.0-6.el5dsrv