Vulnerabilities > CVE-2011-3848 - Path Traversal vulnerability in multiple products

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
low complexity
puppet
puppetlabs
CWE-22
nessus

Summary

Directory traversal vulnerability in Puppet 2.6.x before 2.6.10 and 2.7.x before 2.7.4 allows remote attackers to write X.509 Certificate Signing Request (CSR) to arbitrary locations via (1) a double-encoded key parameter in the URI in 2.7.x, (2) the CN in the Subject of a CSR in 2.6 and 0.25.

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.

Nessus

  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201203-03.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201203-03 (Puppet: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Puppet. Please review the CVE identifiers referenced below for details. Impact : A local attacker could gain elevated privileges, or access and modify arbitrary files. Furthermore, a remote attacker may be able to spoof a Puppet Master or write X.509 Certificate Signing Requests to arbitrary locations. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id58213
    published2012-03-06
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/58213
    titleGLSA-201203-03 : Puppet: Multiple vulnerabilities
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Gentoo Linux Security Advisory GLSA 201203-03.
    #
    # The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc.
    # and licensed under the Creative Commons - Attribution / Share Alike 
    # license. See http://creativecommons.org/licenses/by-sa/3.0/
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(58213);
      script_version("1.9");
      script_cvs_date("Date: 2018/07/11 17:09:26");
    
      script_cve_id("CVE-2009-3564", "CVE-2010-0156", "CVE-2011-3848", "CVE-2011-3869", "CVE-2011-3870", "CVE-2011-3871", "CVE-2011-3872", "CVE-2012-1053", "CVE-2012-1054");
      script_bugtraq_id(36628, 38474, 49860, 49909, 50356, 52158);
      script_xref(name:"GLSA", value:"201203-03");
    
      script_name(english:"GLSA-201203-03 : Puppet: Multiple vulnerabilities");
      script_summary(english:"Checks for updated package(s) in /var/db/pkg");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Gentoo host is missing one or more security-related
    patches."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "The remote host is affected by the vulnerability described in GLSA-201203-03
    (Puppet: Multiple vulnerabilities)
    
        Multiple vulnerabilities have been discovered in Puppet. Please review
          the CVE identifiers referenced below for details.
      
    Impact :
    
        A local attacker could gain elevated privileges, or access and modify
          arbitrary files.  Furthermore, a remote attacker may be able to spoof a
          Puppet Master or write X.509 Certificate Signing Requests to arbitrary
          locations.
      
    Workaround :
    
        There is no known workaround at this time."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://security.gentoo.org/glsa/201203-03"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "All Puppet users should upgrade to the latest version:
          # emerge --sync
          # emerge --ask --oneshot --verbose '>=app-admin/puppet-2.7.11'"
      );
      script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"false");
      script_cwe_id(59, 264);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:puppet");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2012/03/06");
      script_set_attribute(attribute:"plugin_publication_date", value:"2012/03/06");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc.");
      script_family(english:"Gentoo Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("qpkg.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
    if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    
    if (qpkg_check(package:"app-admin/puppet", unaffected:make_list("ge 2.7.11"), vulnerable:make_list("lt 2.7.11"))) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
      else security_warning(0);
      exit(0);
    }
    else
    {
      tested = qpkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Puppet");
    }
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2314.NASL
    descriptionMultiple security issues have been discovered in Puppet, a centralized configuration management system. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2011-3848 Kristian Erik Hermansen reported that an unauthenticated directory traversal could drop any valid X.509 Certificate Signing Request at any location on disk, with the privileges of the Puppet Master application. - CVE-2011-3870 Ricky Zhou discovered a potential local privilege escalation in the ssh_authorized_keys resource and theoretically in the Solaris and AIX providers, where file ownership was given away before it was written, leading to a possibility for a user to overwrite arbitrary files as root, if their authorized_keys file was managed. - CVE-2011-3869 A predictable file name in the k5login type leads to the possibility of symlink attacks which would allow the owner of the home directory to symlink to anything on the system, and have it replaced with the
    last seen2020-03-17
    modified2011-10-04
    plugin id56381
    published2011-10-04
    reporterThis script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56381
    titleDebian DSA-2314-1 : puppet - multiple vulnerabilities
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1217-1.NASL
    descriptionKristian Erik Hermansen discovered a directory traversal vulnerability in the SSLFile indirection base class. A remote attacker could exploit this to overwrite files with the privileges of the Puppet Master. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id56332
    published2011-09-29
    reporterUbuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/56332
    titleUbuntu 10.04 LTS / 10.10 / 11.04 : puppet vulnerability (USN-1217-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_3_PUPPET-111005.NASL
    descriptionA directory traversal vulnerability in puppet allowed unauthenticated remote attackers to upload x.509 certificate signing requests to arbitrary locations (CVE-2011-3848)
    last seen2020-06-01
    modified2020-06-02
    plugin id75714
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75714
    titleopenSUSE Security Update : puppet (openSUSE-SU-2011:1190-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_4_PUPPET-111005.NASL
    descriptionA directory traversal vulnerability in puppet allowed unauthenticated remote attackers to upload x.509 certificate signing requests to arbitrary locations (CVE-2011-3848)
    last seen2020-06-01
    modified2020-06-02
    plugin id75998
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75998
    titleopenSUSE Security Update : puppet (openSUSE-SU-2011:1190-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_PUPPET-111111.NASL
    descriptionThe following security issues have been fixed : - Puppet
    last seen2020-06-01
    modified2020-06-02
    plugin id57129
    published2011-12-13
    reporterThis script is Copyright (C) 2011-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/57129
    titleSuSE 11.1 Security Update : puppet (SAT Patch Number 5421)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_4_PUPPET-111110.NASL
    descriptionPuppet
    last seen2020-06-01
    modified2020-06-02
    plugin id75999
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75999
    titleopenSUSE Security Update : puppet (openSUSE-SU-2011:1288-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_3_PUPPET-111110.NASL
    descriptionPuppet
    last seen2020-06-01
    modified2020-06-02
    plugin id75715
    published2014-06-13
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/75715
    titleopenSUSE Security Update : puppet (openSUSE-SU-2011:1288-1)