Vulnerabilities > CVE-2013-6492 - Permissions, Privileges, and Access Controls vulnerability in Ryan Ohara Piranha 0.8.6

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
ryan-ohara
CWE-264
nessus
exploit available

Summary

The Piranha Configuration Tool in Piranha 0.8.6 does not properly restrict access to webpages, which allows remote attackers to bypass authentication and read or modify the LVS configuration via an HTTP POST request.

Vulnerable Configurations

Part Description Count
Application
Ryan_Ohara
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • 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.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Exploit-Db

descriptionRed Hat Piranha Remote Security Bypass Vulnerability. CVE-2013-6492. Remote exploit for linux platform
idEDB-ID:39097
last seen2016-02-04
modified2013-12-11
published2013-12-11
reporterAndreas Schiermeier
sourcehttps://www.exploit-db.com/download/39097/
titleRed Hat Piranha Remote Security Bypass Vulnerability

Nessus

  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2014-0174.NASL
    descriptionAn updated piranha package that fixes one security issue is now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Piranha provides high-availability and load-balancing services for Red Hat Enterprise Linux. The piranha packages contain various tools to administer and configure the Linux Virtual Server (LVS), as well as the heartbeat and failover components. LVS is a dynamically-adjusted kernel routing mechanism that provides load balancing, primarily for Web and FTP servers. It was discovered that the Piranha Configuration Tool did not properly restrict access to its web pages. A remote attacker able to connect to the Piranha Configuration Tool web server port could use this flaw to read or modify the LVS configuration without providing valid administrative credentials. (CVE-2013-6492) All piranha users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.
    last seen2020-06-01
    modified2020-06-02
    plugin id78998
    published2014-11-08
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/78998
    titleRHEL 5 : piranha (RHSA-2014:0174)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Red Hat Security Advisory RHSA-2014:0174. The text 
    # itself is copyright (C) Red Hat, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(78998);
      script_version("1.8");
      script_cvs_date("Date: 2019/10/24 15:35:38");
    
      script_cve_id("CVE-2013-6492");
      script_bugtraq_id(65587);
      script_xref(name:"RHSA", value:"2014:0174");
    
      script_name(english:"RHEL 5 : piranha (RHSA-2014:0174)");
      script_summary(english:"Checks the rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Red Hat host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "An updated piranha package that fixes one security issue is now
    available for Red Hat Enterprise Linux 5.
    
    The Red Hat Security Response Team has rated this update as having
    Important security impact. A Common Vulnerability Scoring System
    (CVSS) base score, which gives a detailed severity rating, is
    available from the CVE link in the References section.
    
    Piranha provides high-availability and load-balancing services for Red
    Hat Enterprise Linux. The piranha packages contain various tools to
    administer and configure the Linux Virtual Server (LVS), as well as
    the heartbeat and failover components. LVS is a dynamically-adjusted
    kernel routing mechanism that provides load balancing, primarily for
    Web and FTP servers.
    
    It was discovered that the Piranha Configuration Tool did not properly
    restrict access to its web pages. A remote attacker able to connect to
    the Piranha Configuration Tool web server port could use this flaw to
    read or modify the LVS configuration without providing valid
    administrative credentials. (CVE-2013-6492)
    
    All piranha users are advised to upgrade to this updated package,
    which contains a backported patch to correct this issue."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/errata/RHSA-2014:0174"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://access.redhat.com/security/cve/cve-2013-6492"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected piranha and / or piranha-debuginfo packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:A/AC:L/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:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:piranha");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:piranha-debuginfo");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:5");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2014/02/13");
      script_set_attribute(attribute:"plugin_publication_date", value:"2014/11/08");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Red Hat Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.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) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
    os_ver = eregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
    os_ver = os_ver[1];
    if (! ereg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 5.x", "Red Hat " + 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);
    
    yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
    if (!empty_or_null(yum_updateinfo)) 
    {
      rhsa = "RHSA-2014:0174";
      yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
      if (!empty_or_null(yum_report))
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_WARNING,
          extra      : yum_report 
        );
        exit(0);
      }
      else
      {
        audit_message = "affected by Red Hat security advisory " + rhsa;
        audit(AUDIT_OS_NOT, audit_message);
      }
    }
    else
    {
      flag = 0;
      if (rpm_check(release:"RHEL5", cpu:"i386", reference:"piranha-0.8.4-26.el5_10.1")) flag++;
      if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"piranha-0.8.4-26.el5_10.1")) flag++;
      if (rpm_check(release:"RHEL5", cpu:"i386", reference:"piranha-debuginfo-0.8.4-26.el5_10.1")) flag++;
      if (rpm_check(release:"RHEL5", cpu:"x86_64", reference:"piranha-debuginfo-0.8.4-26.el5_10.1")) flag++;
    
      if (flag)
      {
        security_report_v4(
          port       : 0,
          severity   : SECURITY_WARNING,
          extra      : rpm_report_get() + redhat_report_package_caveat()
        );
        exit(0);
      }
      else
      {
        tested = pkg_tests_get();
        if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
        else audit(AUDIT_PACKAGE_NOT_INSTALLED, "piranha / piranha-debuginfo");
      }
    }
    
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2014-0174.NASL
    descriptionFrom Red Hat Security Advisory 2014:0174 : An updated piranha package that fixes one security issue is now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Piranha provides high-availability and load-balancing services for Red Hat Enterprise Linux. The piranha packages contain various tools to administer and configure the Linux Virtual Server (LVS), as well as the heartbeat and failover components. LVS is a dynamically-adjusted kernel routing mechanism that provides load balancing, primarily for Web and FTP servers. It was discovered that the Piranha Configuration Tool did not properly restrict access to its web pages. A remote attacker able to connect to the Piranha Configuration Tool web server port could use this flaw to read or modify the LVS configuration without providing valid administrative credentials. (CVE-2013-6492) All piranha users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.
    last seen2020-06-01
    modified2020-06-02
    plugin id72496
    published2014-02-14
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/72496
    titleOracle Linux 5 : piranha (ELSA-2014-0174)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20140213_PIRANHA_ON_SL6_X.NASL
    descriptionIt was discovered that the Piranha Configuration Tool did not properly restrict access to its web pages. A remote attacker able to connect to the Piranha Configuration Tool web server port could use this flaw to read or modify the LVS configuration without providing valid administrative credentials. (CVE-2013-6492) This update also fixes the following bug : - When the lvsd service attempted to start, the sem_timedwait() function received the interrupted function call (EINTR) error and exited, causing the lvsd service to fail to start. With this update, EINTR errors are correctly ignored during the start-up of the lvsd service.
    last seen2020-03-18
    modified2014-02-14
    plugin id72501
    published2014-02-14
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/72501
    titleScientific Linux Security Update : piranha on SL6.x i386/x86_64 (20140213)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2014-0175.NASL
    descriptionAn updated piranha package that fixes one security issue and one bug is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Piranha provides high-availability and load-balancing services for Red Hat Enterprise Linux. The piranha packages contain various tools to administer and configure the Linux Virtual Server (LVS), as well as the heartbeat and failover components. LVS is a dynamically-adjusted kernel routing mechanism that provides load balancing, primarily for Web and FTP servers. It was discovered that the Piranha Configuration Tool did not properly restrict access to its web pages. A remote attacker able to connect to the Piranha Configuration Tool web server port could use this flaw to read or modify the LVS configuration without providing valid administrative credentials. (CVE-2013-6492) This update also fixes the following bug : * When the lvsd service attempted to start, the sem_timedwait() function received the interrupted function call (EINTR) error and exited, causing the lvsd service to fail to start. With this update, EINTR errors are correctly ignored during the start-up of the lvsd service. (BZ#1055709) All piranha users are advised to upgrade to this updated package, which contains backported patches to correct these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id72493
    published2014-02-14
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/72493
    titleCentOS 6 : piranha (CESA-2014:0175)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2014-0174.NASL
    descriptionAn updated piranha package that fixes one security issue is now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Piranha provides high-availability and load-balancing services for Red Hat Enterprise Linux. The piranha packages contain various tools to administer and configure the Linux Virtual Server (LVS), as well as the heartbeat and failover components. LVS is a dynamically-adjusted kernel routing mechanism that provides load balancing, primarily for Web and FTP servers. It was discovered that the Piranha Configuration Tool did not properly restrict access to its web pages. A remote attacker able to connect to the Piranha Configuration Tool web server port could use this flaw to read or modify the LVS configuration without providing valid administrative credentials. (CVE-2013-6492) All piranha users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.
    last seen2020-06-01
    modified2020-06-02
    plugin id72492
    published2014-02-14
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/72492
    titleCentOS 5 : piranha (CESA-2014:0174)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20140213_PIRANHA_ON_SL5_X.NASL
    descriptionIt was discovered that the Piranha Configuration Tool did not properly restrict access to its web pages. A remote attacker able to connect to the Piranha Configuration Tool web server port could use this flaw to read or modify the LVS configuration without providing valid administrative credentials. (CVE-2013-6492)
    last seen2020-03-18
    modified2014-02-14
    plugin id72500
    published2014-02-14
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/72500
    titleScientific Linux Security Update : piranha on SL5.x i386/x86_64 (20140213)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2014-0175.NASL
    descriptionAn updated piranha package that fixes one security issue and one bug is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Piranha provides high-availability and load-balancing services for Red Hat Enterprise Linux. The piranha packages contain various tools to administer and configure the Linux Virtual Server (LVS), as well as the heartbeat and failover components. LVS is a dynamically-adjusted kernel routing mechanism that provides load balancing, primarily for Web and FTP servers. It was discovered that the Piranha Configuration Tool did not properly restrict access to its web pages. A remote attacker able to connect to the Piranha Configuration Tool web server port could use this flaw to read or modify the LVS configuration without providing valid administrative credentials. (CVE-2013-6492) This update also fixes the following bug : * When the lvsd service attempted to start, the sem_timedwait() function received the interrupted function call (EINTR) error and exited, causing the lvsd service to fail to start. With this update, EINTR errors are correctly ignored during the start-up of the lvsd service. (BZ#1055709) All piranha users are advised to upgrade to this updated package, which contains backported patches to correct these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id72499
    published2014-02-14
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/72499
    titleRHEL 6 : piranha (RHSA-2014:0175)

Redhat

advisories
  • bugzilla
    id1043040
    titleCVE-2013-6492 piranha: web UI authentication bypass using POST requests
    oval
    OR
    • commentRed Hat Enterprise Linux must be installed
      ovaloval:com.redhat.rhba:tst:20070304026
    • AND
      • commentRed Hat Enterprise Linux 5 is installed
        ovaloval:com.redhat.rhba:tst:20070331005
      • commentpiranha is earlier than 0:0.8.4-26.el5_10.1
        ovaloval:com.redhat.rhsa:tst:20140174001
      • commentpiranha is signed with Red Hat redhatrelease key
        ovaloval:com.redhat.rhsa:tst:20140174002
    rhsa
    idRHSA-2014:0174
    released2014-02-13
    severityImportant
    titleRHSA-2014:0174: piranha security update (Important)
  • bugzilla
    id1055709
    titlepulse: ignore EINTR while waiting for semaphore
    oval
    OR
    • commentRed Hat Enterprise Linux must be installed
      ovaloval:com.redhat.rhba:tst:20070304026
    • AND
      • commentRed Hat Enterprise Linux 6 is installed
        ovaloval:com.redhat.rhba:tst:20111656003
      • commentpiranha is earlier than 0:0.8.6-4.el6_5.2
        ovaloval:com.redhat.rhsa:tst:20140175001
      • commentpiranha is signed with Red Hat redhatrelease2 key
        ovaloval:com.redhat.rhsa:tst:20140175002
    rhsa
    idRHSA-2014:0175
    released2014-02-13
    severityImportant
    titleRHSA-2014:0175: piranha security and bug fix update (Important)
rpms
  • piranha-0:0.8.4-26.el5_10.1
  • piranha-debuginfo-0:0.8.4-26.el5_10.1
  • piranha-0:0.8.6-4.el6_5.2
  • piranha-debuginfo-0:0.8.6-4.el6_5.2