Vulnerabilities > CVE-2014-9422 - Improper Access Control vulnerability in MIT Kerberos 5

047910
CVSS 6.1 - MEDIUM
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
SINGLE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
COMPLETE
network
high complexity
mit
CWE-284
nessus

Summary

The check_rpcsec_auth function in kadmin/server/kadm_rpc_svc.c in kadmind in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 allows remote authenticated users to bypass a kadmin/* authorization check and obtain administrative access by leveraging access to a two-component principal with an initial "kadmind" substring, as demonstrated by a "ka/x" principal.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2015-2347.NASL
    descriptionSecurity fix for CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423 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.
    last seen2020-06-05
    modified2015-03-13
    plugin id81796
    published2015-03-13
    reporterThis script is Copyright (C) 2015-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/81796
    titleFedora 21 : krb5-1.12.2-14.fc21 (2015-2347)
    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 2015-2347.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(81796);
      script_version("1.8");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2014-5352", "CVE-2014-9421", "CVE-2014-9422", "CVE-2014-9423");
      script_bugtraq_id(72494, 72495, 72496, 72503);
      script_xref(name:"FEDORA", value:"2015-2347");
    
      script_name(english:"Fedora 21 : krb5-1.12.2-14.fc21 (2015-2347)");
      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:
    "Security fix for CVE-2014-5352, CVE-2014-9421, CVE-2014-9422,
    CVE-2014-9423
    
    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=1179856"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1179857"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1179861"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.redhat.com/show_bug.cgi?id=1179863"
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2015-March/151437.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?93fb540e"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected krb5 package.");
      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:ND/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_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:krb5");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:21");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2015/02/21");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/13");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015-2020 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:"^21([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 21.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:"FC21", reference:"krb5-1.12.2-14.fc21")) 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, "krb5");
    }
    
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2015-0439.NASL
    descriptionUpdated krb5 packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application. (CVE-2014-4344) A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-06-01
    modified2020-06-02
    plugin id81637
    published2015-03-05
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/81637
    titleRHEL 7 : krb5 (RHSA-2015:0439)
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_24CE5597ACAB11E4A847206A8A720317.NASL
    descriptionSO-AND-SO reports : CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library, after gss_process_context_token() is used to process a valid context deletion token, the caller is left with a security context handle containing a dangling pointer. Further uses of this handle will result in use-after-free and double-free memory access violations. libgssrpc server applications such as kadmind are vulnerable as they can be instructed to call gss_process_context_token(). CVE-2014-9421: If the MIT krb5 kadmind daemon receives invalid XDR data from an authenticated user, it may perform use-after-free and double-free memory access violations while cleaning up the partial deserialization results. Other libgssrpc server applications may also be vulnerable if they contain insufficiently defensive XDR functions. CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly accepts authentications to two-component server principals whose first component is a left substring of
    last seen2020-06-01
    modified2020-06-02
    plugin id81175
    published2015-02-05
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/81175
    titleFreeBSD : krb5 -- Vulnerabilities in kadmind, libgssrpc, gss_process_context_token VU#540092 (24ce5597-acab-11e4-a847-206a8a720317)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2015-2382.NASL
    descriptionSecurity fix for CVE-2014-5352, CVE-2014-9421, CVE-2014-9422, CVE-2014-9423 Security fix for CVE-2014-5351 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.
    last seen2020-06-05
    modified2015-03-10
    plugin id81705
    published2015-03-10
    reporterThis script is Copyright (C) 2015-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/81705
    titleFedora 20 : krb5-1.11.5-18.fc20 (2015-2382)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2015-0439.NASL
    descriptionUpdated krb5 packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application. (CVE-2014-4344) A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-06-01
    modified2020-06-02
    plugin id81896
    published2015-03-18
    reporterThis script is Copyright (C) 2015 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/81896
    titleCentOS 7 : krb5 (CESA-2015:0439)
  • NASL familyAIX Local Security Checks
    NASL idAIX_NAS_ADVISORY3.NASL
    descriptionThe version of the Network Authentication Service (NAS) installed on the remote AIX host is affected by the following vulnerabilities related to Kerberos 5 : - Denial of service and remote code execution vulnerabilities exist due to security context handles not being properly maintained, allowing an authenticated, remote attacker to crash the service or execute arbitrary code using crafted GSSAPI traffic. (CVE-2014-5352) - A denial of service vulnerability exists due to improper handling of zero-byte or unterminated strings. (CVE-2014-5355) - Denial of service and remote code execution vulnerabilities exist which allow an authenticated, remote attacker to crash the service or execute arbitrary code using crafted, malformed XDR data. (CVE-2014-9421) - A privilege escalation vulnerability exists that allows an authenticated, remote attacker to gain administrative access via a flaw in kadmin authorization checks. (CVE-2014-9422) - An information disclosure vulnerability allows an attacker to gain information about process heap memory from NAS packets. (CVE-2014-9423)
    last seen2020-06-01
    modified2020-06-02
    plugin id83874
    published2015-05-28
    reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/83874
    titleAIX NAS Advisory : nas_advisory3.asc
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2015-128.NASL
    descriptionkrb5 was updated to fix five security issues. These security issues were fixed : - CVE-2014-5351: current keys returned when randomizing the keys for a service principal (bnc#897874) - CVE-2014-5352: An authenticated attacker could cause a vulnerable application (including kadmind) to crash or to execute arbitrary code (bnc#912002). - CVE-2014-9421: An authenticated attacker could cause kadmind or other vulnerable server application to crash or to execute arbitrary code (bnc#912002). - CVE-2014-9422: An attacker who possess the key of a particularly named principal (such as
    last seen2020-06-05
    modified2015-02-12
    plugin id81304
    published2015-02-12
    reporterThis script is Copyright (C) 2015-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/81304
    titleopenSUSE Security Update : krb5 (openSUSE-2015-128)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-2498-1.NASL
    descriptionIt was discovered that Kerberos incorrectly sent old keys in response to a -randkey -keepold request. An authenticated remote attacker could use this issue to forge tickets by leveraging administrative access. This issue only affected Ubuntu 10.04 LTS, Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-5351) It was discovered that the libgssapi_krb5 library incorrectly processed security context handles. A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2014-5352) Patrik Kis discovered that Kerberos incorrectly handled LDAP queries with no results. An authenticated remote attacker could use this issue to cause the KDC to crash, resulting in a denial of service. (CVE-2014-5353) It was discovered that Kerberos incorrectly handled creating database entries for a keyless principal when using LDAP. An authenticated remote attacker could use this issue to cause the KDC to crash, resulting in a denial of service. (CVE-2014-5354) It was discovered that Kerberos incorrectly handled memory when processing XDR data. A remote attacker could use this issue to cause kadmind to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2014-9421) It was discovered that Kerberos incorrectly handled two-component server principals. A remote attacker could use this issue to perform impersonation attacks. (CVE-2014-9422) It was discovered that the libgssrpc library leaked uninitialized bytes. A remote attacker could use this issue to possibly obtain sensitive information. (CVE-2014-9423). 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 id81297
    published2015-02-11
    reporterUbuntu Security Notice (C) 2015-2019 Canonical, Inc. / NASL script (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/81297
    titleUbuntu 10.04 LTS / 12.04 LTS / 14.04 LTS / 14.10 : krb5 vulnerabilities (USN-2498-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3153.NASL
    descriptionMultiple vulnerabilities have been found in krb5, the MIT implementation of Kerberos : - CVE-2014-5352 Incorrect memory management in the libgssapi_krb5 library might result in denial of service or the execution of arbitrary code. - CVE-2014-9421 Incorrect memory management in kadmind
    last seen2020-03-17
    modified2015-02-04
    plugin id81150
    published2015-02-04
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/81150
    titleDebian DSA-3153-1 : krb5 - security update
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_63527D0DB9DE11E48A48206A8A720317.NASL
    descriptionThe MIT Kerberos team announces the availability of MIT Kerberos 5 Release 1.12.3 : Fix multiple vulnerabilities in the LDAP KDC back end. [CVE-2014-5354] [CVE-2014-5353] Fix multiple kadmind vulnerabilities, some of which are based in the gssrpc library. [CVE-2014-5352 CVE-2014-5352 CVE-2014-9421 CVE-2014-9422 CVE-2014-9423]
    last seen2020-06-01
    modified2020-06-02
    plugin id81432
    published2015-02-23
    reporterThis script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/81432
    titleFreeBSD : krb5 1.12 -- New release/fix multiple vulnerabilities (63527d0d-b9de-11e4-8a48-206a8a720317)
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2015-518.NASL
    descriptionA use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) could call the gss_process_context_token() function and use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker who has the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request. (CVE-2014-5355) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, via specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-06-01
    modified2020-06-02
    plugin id83269
    published2015-05-07
    reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/83269
    titleAmazon Linux AMI : krb5 (ALAS-2015-518)
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_DBF9E66CBD5011E4A7BA206A8A720317.NASL
    descriptionThe MIT Kerberos team announces the availability of MIT Kerberos 5 Release 1.11.6 : Handle certain invalid RFC 1964 GSS tokens correctly to avoid invalid memory reference vulnerabilities. [CVE-2014-4341 Fix memory management vulnerabilities in GSSAPI SPNEGO. [CVE-2014-4343 CVE-2014-4344] Fix buffer overflow vulnerability in LDAP KDB back end. [CVE-2014-4345] Fix multiple vulnerabilities in the LDAP KDC back end. [CVE-2014-5354 CVE-2014-5353] Fix multiple kadmind vulnerabilities, some of which are based in the gssrpc library. [CVE-2014-5352 CVE-2014-9421 CVE-2014-9422 CVE-2014-9423]
    last seen2020-06-01
    modified2020-06-02
    plugin id81534
    published2015-02-26
    reporterThis script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/81534
    titleFreeBSD : krb5 1.11 -- New release/fix multiple vulnerabilities (dbf9e66c-bd50-11e4-a7ba-206a8a720317)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2015-0794.NASL
    descriptionFrom Red Hat Security Advisory 2015:0794 : Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. The following security issues are fixed with this release : A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) could call the gss_process_context_token() function and use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker who has the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request. (CVE-2014-5355) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, via specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-06-01
    modified2020-06-02
    plugin id82689
    published2015-04-10
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82689
    titleOracle Linux 6 : krb5 (ELSA-2015-0794)
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2015-0054.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : - fix for CVE-2014-5355 (#1193939)
    last seen2020-06-01
    modified2020-06-02
    plugin id82692
    published2015-04-10
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82692
    titleOracleVM 3.3 : krb5 (OVMSA-2015-0054)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2015-0439.NASL
    descriptionFrom Red Hat Security Advisory 2015:0439 : Updated krb5 packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. A NULL pointer dereference flaw was found in the MIT Kerberos SPNEGO acceptor for continuation tokens. A remote, unauthenticated attacker could use this flaw to crash a GSSAPI-enabled server application. (CVE-2014-4344) A buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-06-01
    modified2020-06-02
    plugin id81805
    published2015-03-13
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/81805
    titleOracle Linux 7 : krb5 (ELSA-2015-0439)
  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2015-069.NASL
    descriptionMultiple vulnerabilities has been discovered and corrected in krb5 : The krb5_gss_process_context_token function in lib/gssapi/krb5/process_context_token.c in the libgssapi_krb5 library in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly maintain security-context handles, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via crafted GSSAPI traffic, as demonstrated by traffic to kadmind (CVE-2014-5352). MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a
    last seen2020-06-01
    modified2020-06-02
    plugin id82322
    published2015-03-30
    reporterThis script is Copyright (C) 2015-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/82322
    titleMandriva Linux Security Advisory : krb5 (MDVSA-2015:069)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2015-0290-2.NASL
    descriptionMIT kerberos krb5 was updated to fix several security issues and bugs. Security issues fixed: CVE-2014-5351: The kadm5_randkey_principal_3 function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) sent old keys in a response to a -randkey -keepold request, which allowed remote authenticated users to forge tickets by leveraging administrative access. - CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library, after gss_process_context_token() is used to process a valid context deletion token, the caller was left with a security context handle containing a dangling pointer. Further uses of this handle would have resulted in use-after-free and double-free memory access violations. libgssrpc server applications such as kadmind were vulnerable as they can be instructed to call gss_process_context_token(). - CVE-2014-9421: If the MIT krb5 kadmind daemon receives invalid XDR data from an authenticated user, it may have performed use-after-free and double-free memory access violations while cleaning up the partial deserialization results. Other libgssrpc server applications might also been vulnerable if they contain insufficiently defensive XDR functions. - CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly accepted authentications to two-component server principals whose first component is a left substring of
    last seen2020-06-01
    modified2020-06-02
    plugin id83683
    published2015-05-20
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/83683
    titleSUSE SLED12 / SLES12 Security Update : krb5 (SUSE-SU-2015:0290-2)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2015-0794.NASL
    descriptionUpdated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. The following security issues are fixed with this release : A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) could call the gss_process_context_token() function and use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker who has the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request. (CVE-2014-5355) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, via specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-06-01
    modified2020-06-02
    plugin id82656
    published2015-04-09
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82656
    titleRHEL 6 : krb5 (RHSA-2015:0794)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20150305_KRB5_ON_SL7_X.NASL
    descriptionA buffer overflow was found in the KADM5 administration server (kadmind) when it was used with an LDAP back end for the KDC database. A remote, authenticated attacker could potentially use this flaw to execute arbitrary code on the system running kadmind. (CVE-2014-4345) A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) call the gss_process_context_token() function could use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker with the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, using specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-03-18
    modified2015-03-26
    plugin id82255
    published2015-03-26
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82255
    titleScientific Linux Security Update : krb5 on SL7.x x86_64 (20150305)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20150409_KRB5_ON_SL6_X.NASL
    descriptionThe following security issues are fixed with this release : A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) could call the gss_process_context_token() function and use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker who has the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request. (CVE-2014-5355) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, via specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-03-18
    modified2015-04-10
    plugin id82694
    published2015-04-10
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82694
    titleScientific Linux Security Update : krb5 on SL6.x i386/x86_64 (20150409)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_KRB5-20150206-150206.NASL
    descriptionkrb5 has been updated to fix four security issues : - gss_process_context_token() incorrectly frees context (bsc#912002). (CVE-2014-5352) - kadmind doubly frees partial deserialization results (bsc#912002). (CVE-2014-9421) - kadmind incorrectly validates server principal name (bsc#912002). (CVE-2014-9422) - libgssrpc server applications leak uninitialized bytes (bsc#912002) Additionally, these non-security issues have been fixed :. (CVE-2014-9423) - Winbind process hangs indefinitely without DC. (bsc#872912) - Hanging winbind processes. (bsc#906557)
    last seen2020-06-01
    modified2020-06-02
    plugin id81312
    published2015-02-12
    reporterThis script is Copyright (C) 2015 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/81312
    titleSuSE 11.3 Security Update : krb5 (SAT Patch Number 10282)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2015-0794.NASL
    descriptionUpdated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. Kerberos is a networked authentication system which allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos KDC. The following security issues are fixed with this release : A use-after-free flaw was found in the way the MIT Kerberos libgssapi_krb5 library processed valid context deletion tokens. An attacker able to make an application using the GSS-API library (libgssapi) could call the gss_process_context_token() function and use this flaw to crash that application. (CVE-2014-5352) If kadmind were used with an LDAP back end for the KDC database, a remote, authenticated attacker who has the permissions to set the password policy could crash kadmind by attempting to use a named ticket policy object as a password policy for a principal. (CVE-2014-5353) It was found that the krb5_read_message() function of MIT Kerberos did not correctly sanitize input, and could create invalid krb5_data objects. A remote, unauthenticated attacker could use this flaw to crash a Kerberos child process via a specially crafted request. (CVE-2014-5355) A double-free flaw was found in the way MIT Kerberos handled invalid External Data Representation (XDR) data. An authenticated user could use this flaw to crash the MIT Kerberos administration server (kadmind), or other applications using Kerberos libraries, via specially crafted XDR packets. (CVE-2014-9421) It was found that the MIT Kerberos administration server (kadmind) incorrectly accepted certain authentication requests for two-component server principal names. A remote attacker able to acquire a key with a particularly named principal (such as
    last seen2020-06-01
    modified2020-06-02
    plugin id82667
    published2015-04-10
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/82667
    titleCentOS 6 : krb5 (CESA-2015:0794)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2015-0290-1.NASL
    descriptionMIT kerberos krb5 was updated to fix several security issues and bugs. Security issues fixed: CVE-2014-5351: The kadm5_randkey_principal_3 function in lib/kadm5/srv/svr_principal.c in kadmind in MIT Kerberos 5 (aka krb5) sent old keys in a response to a -randkey -keepold request, which allowed remote authenticated users to forge tickets by leveraging administrative access. - CVE-2014-5352: In the MIT krb5 libgssapi_krb5 library, after gss_process_context_token() is used to process a valid context deletion token, the caller was left with a security context handle containing a dangling pointer. Further uses of this handle would have resulted in use-after-free and double-free memory access violations. libgssrpc server applications such as kadmind were vulnerable as they can be instructed to call gss_process_context_token(). - CVE-2014-9421: If the MIT krb5 kadmind daemon receives invalid XDR data from an authenticated user, it may have performed use-after-free and double-free memory access violations while cleaning up the partial deserialization results. Other libgssrpc server applications might also been vulnerable if they contain insufficiently defensive XDR functions. - CVE-2014-9422: The MIT krb5 kadmind daemon incorrectly accepted authentications to two-component server principals whose first component is a left substring of
    last seen2020-06-01
    modified2020-06-02
    plugin id83682
    published2015-05-20
    reporterThis script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/83682
    titleSUSE SLES12 Security Update : krb5 (SUSE-SU-2015:0290-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-146.NASL
    descriptionMultiples vulnerabilities have been found in krb5, the MIT implementation of Kerberos : CVE-2014-5352 Incorrect memory management in the libgssapi_krb5 library might result in denial of service or the execution of arbitrary code. CVE-2014-9421 Incorrect memory management in kadmind
    last seen2020-03-17
    modified2015-03-26
    plugin id82129
    published2015-03-26
    reporterThis script is Copyright (C) 2015-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/82129
    titleDebian DLA-146-1 : krb5 security update

Redhat

advisories
  • bugzilla
    id1193939
    titleCVE-2014-5355 krb5: unauthenticated denial of service in recvauth_common() and others
    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
      • OR
        • AND
          • commentkrb5-server-ldap is earlier than 0:1.10.3-37.el6_6
            ovaloval:com.redhat.rhsa:tst:20150794001
          • commentkrb5-server-ldap is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhba:tst:20192599004
        • AND
          • commentkrb5-devel is earlier than 0:1.10.3-37.el6_6
            ovaloval:com.redhat.rhsa:tst:20150794003
          • commentkrb5-devel is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhba:tst:20192599002
        • AND
          • commentkrb5-server is earlier than 0:1.10.3-37.el6_6
            ovaloval:com.redhat.rhsa:tst:20150794005
          • commentkrb5-server is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhba:tst:20192599006
        • AND
          • commentkrb5-libs is earlier than 0:1.10.3-37.el6_6
            ovaloval:com.redhat.rhsa:tst:20150794007
          • commentkrb5-libs is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhba:tst:20192599014
        • AND
          • commentkrb5-workstation is earlier than 0:1.10.3-37.el6_6
            ovaloval:com.redhat.rhsa:tst:20150794009
          • commentkrb5-workstation is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhba:tst:20192599008
        • AND
          • commentkrb5-pkinit-openssl is earlier than 0:1.10.3-37.el6_6
            ovaloval:com.redhat.rhsa:tst:20150794011
          • commentkrb5-pkinit-openssl is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20100863002
    rhsa
    idRHSA-2015:0794
    released2015-04-09
    severityModerate
    titleRHSA-2015:0794: krb5 security update (Moderate)
  • rhsa
    idRHSA-2015:0439
rpms
  • krb5-debuginfo-0:1.12.2-14.el7
  • krb5-devel-0:1.12.2-14.el7
  • krb5-libs-0:1.12.2-14.el7
  • krb5-pkinit-0:1.12.2-14.el7
  • krb5-server-0:1.12.2-14.el7
  • krb5-server-ldap-0:1.12.2-14.el7
  • krb5-workstation-0:1.12.2-14.el7
  • krb5-debuginfo-0:1.10.3-37.el6_6
  • krb5-devel-0:1.10.3-37.el6_6
  • krb5-libs-0:1.10.3-37.el6_6
  • krb5-pkinit-openssl-0:1.10.3-37.el6_6
  • krb5-server-0:1.10.3-37.el6_6
  • krb5-server-ldap-0:1.10.3-37.el6_6
  • krb5-workstation-0:1.10.3-37.el6_6