Vulnerabilities > CVE-2011-4151 - Improper Input Validation vulnerability in MIT Kerberos 5

047910
CVSS 7.8 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
COMPLETE
network
low complexity
mit
CWE-20
nessus
NVD
Published: 2011-10-20
Updated: 2020-01-21

Summary

The krb5_db2_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4, when the db2 (aka Berkeley DB) back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, a different vulnerability than CVE-2011-1528.

Vulnerable Configurations

Part Description Count
Application
Mit
5

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 familySolaris Local Security Checks
    NASL idSOLARIS11_KERBEROS_20130702.NASL
    descriptionThe remote Solaris system is missing necessary patches to address security updates : - The krb5_ldap_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, related to the locked_check_p function. NOTE: the Berkeley DB vector is covered by CVE-2011-4151. (CVE-2011-1528) - The lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2 (aka Berkeley DB) or LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger certain process_as_req errors. (CVE-2011-1529) - The krb5_db2_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4, when the db2 (aka Berkeley DB) back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, a different vulnerability than CVE-2011-1528. (CVE-2011-4151)
    last seen2020-06-01
    modified2020-06-02
    plugin id80650
    published2015-01-19
    reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/80650
    titleOracle Solaris Third-Party Patch Update : kerberos (multiple_input_validation_vulnerabilities_in)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the Oracle Third Party software advisories.
#
include("compat.inc");

if (description)
{
  script_id(80650);
  script_version("1.2");
  script_cvs_date("Date: 2018/11/15 20:50:24");

  script_cve_id("CVE-2011-1528", "CVE-2011-1529", "CVE-2011-4151");

  script_name(english:"Oracle Solaris Third-Party Patch Update : kerberos (multiple_input_validation_vulnerabilities_in)");
  script_summary(english:"Check for the 'entire' version.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Solaris system is missing a security patch for third-party
software."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote Solaris system is missing necessary patches to address
security updates :

  - The krb5_ldap_lockout_audit function in the Key
    Distribution Center (KDC) in MIT Kerberos 5 (aka krb5)
    1.8 through 1.8.4 and 1.9 through 1.9.1, when the LDAP
    back end is used, allows remote attackers to cause a
    denial of service (assertion failure and daemon exit)
    via unspecified vectors, related to the locked_check_p
    function. NOTE: the Berkeley DB vector is covered by
    CVE-2011-4151. (CVE-2011-1528)

  - The lookup_lockout_policy function in the Key
    Distribution Center (KDC) in MIT Kerberos 5 (aka krb5)
    1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2
    (aka Berkeley DB) or LDAP back end is used, allows
    remote attackers to cause a denial of service (NULL
    pointer dereference and daemon crash) via vectors that
    trigger certain process_as_req errors. (CVE-2011-1529)

  - The krb5_db2_lockout_audit function in the Key
    Distribution Center (KDC) in MIT Kerberos 5 (aka krb5)
    1.8 through 1.8.4, when the db2 (aka Berkeley DB) back
    end is used, allows remote attackers to cause a denial
    of service (assertion failure and daemon exit) via
    unspecified vectors, a different vulnerability than
    CVE-2011-1528. (CVE-2011-4151)"
  );
  # https://www.oracle.com/technetwork/topics/security/thirdparty-patch-map-1482893.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4a913f44"
  );
  # https://blogs.oracle.com/sunsecurity/multiple-input-validation-vulnerabilities-in-kerberos
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?103a3cab"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade to Solaris 11.1.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:solaris:11.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:solaris:kerberos");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/07/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/01/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2018 Tenable Network Security, Inc.");
  script_family(english:"Solaris Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Solaris11/release", "Host/Solaris11/pkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("solaris.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Solaris11/release");
if (isnull(release)) audit(AUDIT_OS_NOT, "Solaris11");
pkg_list = solaris_pkg_list_leaves();
if (isnull (pkg_list)) audit(AUDIT_PACKAGE_LIST_MISSING, "Solaris pkg-list packages");

if (empty_or_null(egrep(string:pkg_list, pattern:"^kerberos-"))) audit(AUDIT_PACKAGE_NOT_INSTALLED, "kerberos");

flag = 0;

if (solaris_check_release(release:"0.5.11-0.175.1.0.0.0.0", sru:"SRU 0") > 0) flag++;

if (flag)
{
  error_extra = 'Affected package : kerberos\n' + solaris_get_report2();
  error_extra = ereg_replace(pattern:"version", replace:"OS version", string:error_extra);
  if (report_verbosity > 0) security_hole(port:0, extra:error_extra);
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_PACKAGE_NOT_AFFECTED, "kerberos");
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201201-13.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201201-13 (MIT Kerberos 5: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in MIT Kerberos 5. Please review the CVE identifiers referenced below for details. Impact : A remote attacker may be able to execute arbitrary code with the privileges of the administration daemon or the Key Distribution Center (KDC) daemon, cause a Denial of Service condition, or possibly obtain sensitive information. Furthermore, a remote attacker may be able to spoof Kerberos authorization, modify KDC responses, forge user data messages, forge tokens, forge signatures, impersonate a client, modify user-visible prompt text, or have other unspecified impact. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id57655
    published2012-01-24
    reporterThis script is Copyright (C) 2012-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/57655
    titleGLSA-201201-13 : MIT Kerberos 5: 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 201201-13.
#
# 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(57655);
  script_version("1.13");
  script_cvs_date("Date: 2018/07/11 17:09:26");

  script_cve_id("CVE-2009-3295", "CVE-2009-4212", "CVE-2010-0283", "CVE-2010-0629", "CVE-2010-1320", "CVE-2010-1321", "CVE-2010-1322", "CVE-2010-1323", "CVE-2010-1324", "CVE-2010-4020", "CVE-2010-4021", "CVE-2010-4022", "CVE-2011-0281", "CVE-2011-0282", "CVE-2011-0283", "CVE-2011-0284", "CVE-2011-0285", "CVE-2011-1527", "CVE-2011-1528", "CVE-2011-1529", "CVE-2011-1530", "CVE-2011-4151");
  script_bugtraq_id(37486, 37749, 38260, 39247, 39599, 40235, 43756, 45116, 45117, 45118, 45122, 46265, 46269, 46271, 46272, 46881, 47310, 50273, 50929);
  script_xref(name:"GLSA", value:"201201-13");

  script_name(english:"GLSA-201201-13 : MIT Kerberos 5: 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-201201-13
(MIT Kerberos 5: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in MIT Kerberos 5. Please
      review the CVE identifiers referenced below for details.
  
Impact :

    A remote attacker may be able to execute arbitrary code with the
      privileges of the administration daemon or the Key Distribution Center
      (KDC) daemon, cause a Denial of Service condition, or possibly obtain
      sensitive information. Furthermore, a remote attacker may be able to
      spoof Kerberos authorization, modify KDC responses, forge user data
      messages, forge tokens, forge signatures, impersonate a client, modify
      user-visible prompt text, or have other unspecified impact.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/201201-13"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All MIT Kerberos 5 users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=app-crypt/mit-krb5-1.9.2-r1'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(20, 119, 189);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:mit-krb5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/01/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/01/24");
  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-crypt/mit-krb5", unaffected:make_list("ge 1.9.2-r1"), vulnerable:make_list("lt 1.9.2-r1"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "MIT Kerberos 5");
}

References