Vulnerabilities > CVE-2009-0844 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in MIT Kerberos and Kerberos 5

047910
CVSS 5.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
PARTIAL
network
mit
CWE-119
nessus

Summary

The get_input_token function in the SPNEGO implementation in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to cause a denial of service (daemon crash) and possibly obtain sensitive information via a crafted length value that triggers a buffer over-read.

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.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2009-0408.NASL
    descriptionFrom Red Hat Security Advisory 2009:0408 : Updated krb5 packages that fix various security issues are now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). The Generic Security Service Application Program Interface (GSS-API) definition provides security services to callers (protocols) in a generic fashion. The Simple and Protected GSS-API Negotiation (SPNEGO) mechanism is used by GSS-API peers to choose from a common set of security mechanisms. An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846) Multiple input validation flaws were found in the MIT Kerberos GSS-API library
    last seen2020-06-01
    modified2020-06-02
    plugin id67836
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/67836
    titleOracle Linux 5 : krb5 (ELSA-2009-0408)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Red Hat Security Advisory RHSA-2009:0408 and 
    # Oracle Linux Security Advisory ELSA-2009-0408 respectively.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(67836);
      script_version("1.7");
      script_cvs_date("Date: 2019/10/25 13:36:08");
    
      script_cve_id("CVE-2009-0844", "CVE-2009-0845", "CVE-2009-0846", "CVE-2009-0847");
      script_xref(name:"RHSA", value:"2009:0408");
    
      script_name(english:"Oracle Linux 5 : krb5 (ELSA-2009-0408)");
      script_summary(english:"Checks rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Oracle Linux host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "From Red Hat Security Advisory 2009:0408 :
    
    Updated krb5 packages that fix various security issues are now
    available for Red Hat Enterprise Linux 5.
    
    This update has been rated as having important security impact by the
    Red Hat Security Response Team.
    
    Kerberos is a network authentication system which allows clients and
    servers to authenticate to each other using symmetric encryption and a
    trusted third party, the Key Distribution Center (KDC). The Generic
    Security Service Application Program Interface (GSS-API) definition
    provides security services to callers (protocols) in a generic
    fashion. The Simple and Protected GSS-API Negotiation (SPNEGO)
    mechanism is used by GSS-API peers to choose from a common set of
    security mechanisms.
    
    An input validation flaw was found in the ASN.1 (Abstract Syntax
    Notation One) decoder used by MIT Kerberos. A remote attacker could
    use this flaw to crash a network service using the MIT Kerberos
    library, such as kadmind or krb5kdc, by causing it to dereference or
    free an uninitialized pointer. (CVE-2009-0846)
    
    Multiple input validation flaws were found in the MIT Kerberos GSS-API
    library's implementation of the SPNEGO mechanism. A remote attacker
    could use these flaws to crash any network service utilizing the MIT
    Kerberos GSS-API library to authenticate users or, possibly, leak
    portions of the service's memory. (CVE-2009-0844, CVE-2009-0845)
    
    All krb5 users should upgrade to these updated packages, which contain
    backported patches to correct these issues. All running services using
    the MIT Kerberos libraries must be restarted for the update to take
    effect."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://oss.oracle.com/pipermail/el-errata/2009-April/000955.html"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected krb5 packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
      script_cwe_id(20, 119, 189);
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:krb5-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:krb5-libs");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:krb5-server");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:krb5-workstation");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2009/03/27");
      script_set_attribute(attribute:"patch_publication_date", value:"2009/04/07");
      script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Oracle Linux Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "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);
    if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
    os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
    os_ver = os_ver[1];
    if (! preg(pattern:"^5([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 5", "Oracle Linux " + 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 && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);
    
    flag = 0;
    if (rpm_check(release:"EL5", reference:"krb5-devel-1.6.1-31.el5_3.3")) flag++;
    if (rpm_check(release:"EL5", reference:"krb5-libs-1.6.1-31.el5_3.3")) flag++;
    if (rpm_check(release:"EL5", reference:"krb5-server-1.6.1-31.el5_3.3")) flag++;
    if (rpm_check(release:"EL5", reference:"krb5-workstation-1.6.1-31.el5_3.3")) 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-devel / krb5-libs / krb5-server / krb5-workstation");
    }
    
  • NASL familyVMware ESX Local Security Checks
    NASL idVMWARE_VMSA-2009-0008.NASL
    descriptiona. Service Console package krb5 update Kerberos is a network authentication protocol. It is designed to provide strong authentication for client/server applications by using secret-key cryptography. An input validation flaw in the asn1_decode_generaltime function in MIT Kerberos 5 before 1.6.4 allows remote attackers to cause a denial of service or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer or, possibly, execute arbitrary code with the privileges of the user running the service. NOTE: ESX by default is unaffected by this issue, the daemons kadmind and krb5kdc are not installed in ESX. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2009-0846 to this issue. In addition the ESX 4.0 Service Console krb5 package was also updated for CVE-2009-0845, and CVE-2009-0844 and RHBA-2009-0135. MIT Kerberos versions 5 1.5 through 1.6.3 might allow remote attackers to cause a denial of service by using invalid ContextFlags data in the reqFlags field in a negTokenInit token. The Common Vulnerabilities and Exposures Project (cve.mitre.org) has assigned the name CVE-2009-0845 to this issue. MIT Kerberos 5 before version 1.6.4 might allow remote attackers to cause a denial of service or possibly execute arbitrary code by using vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer. The Common Vulnerabilities and Exposures Project (cve.mitre.org) has assigned the name CVE-2009-0846 to this issue. For ESX 4.0, 3.5, 3.0.3 the Service Console package pam_krb5 has also been upgraded. For details on the non-security issues that this upgrade addresses, refer to the respective KB article listed in section 4 below.
    last seen2020-06-01
    modified2020-06-02
    plugin id40393
    published2009-07-27
    reporterThis script is Copyright (C) 2009-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40393
    titleVMSA-2009-0008 : ESX Service Console update for krb5
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-1766.NASL
    descriptionSeveral vulnerabilities have been found in the MIT reference implementation of Kerberos V5, a system for authenticating users and services on a network. The Common Vulnerabilities and Exposures project identified the following problems : - CVE-2009-0844 The Apple Product Security team discovered that the SPNEGO GSS-API mechanism suffers of a missing bounds check when reading a network input buffer which results in an invalid read crashing the application or possibly leaking information. - CVE-2009-0845 Under certain conditions the SPNEGO GSS-API mechanism references a NULL pointer which crashes the application using the library. - CVE-2009-0847 An incorrect length check inside the ASN.1 decoder of the MIT krb5 implementation allows an unauthenticated remote attacker to crash of the kinit or KDC program. - CVE-2009-0846 Under certain conditions the the ASN.1 decoder of the MIT krb5 implementation frees an uninitialized pointer which could lead to denial of service and possibly arbitrary code execution.
    last seen2020-06-01
    modified2020-06-02
    plugin id36120
    published2009-04-09
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/36120
    titleDebian DSA-1766-1 : krb5 - several vulnerabilities
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2009-0410.NASL
    descriptionUpdated krb5 packages that fix a security issue are now available for Red Hat Enterprise Linux 2.1 and 3. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer or, possibly, execute arbitrary code with the privileges of the user running the service. (CVE-2009-0846) All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.
    last seen2020-06-01
    modified2020-06-02
    plugin id36107
    published2009-04-08
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/36107
    titleCentOS 3 : krb5 (CESA-2009:0410)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-755-1.NASL
    descriptionMultiple flaws were discovered in the Kerberos GSS-API and ASN.1 routines that did not correctly handle certain requests. An unauthenticated remote attacker could send specially crafted traffic to crash services using the Kerberos library, leading to a denial of service. 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 id37819
    published2009-04-23
    reporterUbuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/37819
    titleUbuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : krb5 vulnerabilities (USN-755-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_0_KRB5-090406.NASL
    descriptionClients sending negotiation requests with invalid flags could crash the kerberos server (CVE-2009-0845). GSS-API clients could crash when reading from an invalid address space (CVE-2009-0844). Invalid length checks could crash applications using the kerberos ASN.1 parser (CVE-2009-0847). Under certain circumstances the ASN.1 parser could free an uninitialized pointer which could crash a kerberos server or even lead to execution of arbitrary code (CVE-2009-0846).
    last seen2020-06-01
    modified2020-06-02
    plugin id40017
    published2009-07-21
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40017
    titleopenSUSE Security Update : krb5 (krb5-740)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_1_KRB5-090406.NASL
    descriptionClients sending negotiation requests with invalid flags could crash the kerberos server (CVE-2009-0845). GSS-API clients could crash when reading from an invalid address space (CVE-2009-0844). Invalid length checks could crash applications using the kerberos ASN.1 parser (CVE-2009-0847). Under certain circumstances the ASN.1 parser could free an uninitialized pointer which could crash a kerberos server or even lead to execution of arbitrary code (CVE-2009-0846).
    last seen2020-06-01
    modified2020-06-02
    plugin id40253
    published2009-07-21
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/40253
    titleopenSUSE Security Update : krb5 (krb5-740)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20090407_KRB5_ON_SL4_X.NASL
    descriptionAn input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846) Multiple input validation flaws were found in the MIT Kerberos GSS-API library
    last seen2020-06-01
    modified2020-06-02
    plugin id60564
    published2012-08-01
    reporterThis script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/60564
    titleScientific Linux Security Update : krb5 on SL4.x, SL5.x i386/x86_64
  • NASL familyVMware ESX Local Security Checks
    NASL idVMWARE_VMSA-2010-0016.NASL
    descriptiona. Service Console OS update for COS kernel This patch updates the service console kernel to fix multiple security issues. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2010-0415, CVE-2010-0307, CVE-2010-0291, CVE-2010-0622, CVE-2010-1087, CVE-2010-1437, and CVE-2010-1088 to these issues. b. Likewise package updates Updates to the likewisekrb5, likewiseopenldap, likewiseopen, and pamkrb5 packages address several security issues. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2009-0844, CVE-2009-0845, CVE-2009-0846, CVE-2009-4212, and CVE-2010-1321 to these issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id50611
    published2010-11-16
    reporterThis script is Copyright (C) 2010-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/50611
    titleVMSA-2010-0016 : VMware ESXi and ESX third-party updates for Service Console and Likewise components
  • NASL familyMandriva Local Security Checks
    NASL idMANDRIVA_MDVSA-2009-098.NASL
    descriptionMultiple vulnerabilities has been found and corrected in krb5 : The get_input_token function in the SPNEGO implementation in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to cause a denial of service (daemon crash) and possibly obtain sensitive information via a crafted length value that triggers a buffer over-read (CVE-2009-0844). The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token (CVE-2009-0845). The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer (CVE-2009-0846). The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic (CVE-2009-0847). The updated packages have been patched to correct these issues. Update : Packages for 2008.0 are provided for Corporate Desktop 2008.0 customers
    last seen2020-06-01
    modified2020-06-02
    plugin id38191
    published2009-04-28
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/38191
    titleMandriva Linux Security Advisory : krb5 (MDVSA-2009:098-1)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2009-0409.NASL
    descriptionFrom Red Hat Security Advisory 2009:0409 : Updated krb5 packages that fix a security issue are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846) All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.
    last seen2020-06-01
    modified2020-06-02
    plugin id67837
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/67837
    titleOracle Linux 4 : krb5 (ELSA-2009-0409)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2009-0409.NASL
    descriptionUpdated krb5 packages that fix a security issue are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846) All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.
    last seen2020-06-01
    modified2020-06-02
    plugin id43740
    published2010-01-06
    reporterThis script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/43740
    titleCentOS 4 : krb5 (CESA-2009:0409)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2009-0409.NASL
    descriptionUpdated krb5 packages that fix a security issue are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846) All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.
    last seen2020-06-01
    modified2020-06-02
    plugin id36113
    published2009-04-08
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/36113
    titleRHEL 4 : krb5 (RHSA-2009:0409)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2009-0408.NASL
    descriptionUpdated krb5 packages that fix various security issues are now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). The Generic Security Service Application Program Interface (GSS-API) definition provides security services to callers (protocols) in a generic fashion. The Simple and Protected GSS-API Negotiation (SPNEGO) mechanism is used by GSS-API peers to choose from a common set of security mechanisms. An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846) Multiple input validation flaws were found in the MIT Kerberos GSS-API library
    last seen2020-06-01
    modified2020-06-02
    plugin id36112
    published2009-04-08
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/36112
    titleRHEL 5 : krb5 (RHSA-2009:0408)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-200904-09.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-200904-09 (MIT Kerberos 5: Multiple vulnerabilities) Multiple vulnerabilities have been reported in MIT Kerberos 5: A free() call on an uninitialized pointer in the ASN.1 decoder when decoding an invalid encoding (CVE-2009-0846). A buffer overread in the SPNEGO GSS-API application, reported by Apple Product Security (CVE-2009-0844). A NULL pointer dereference in the SPNEGO GSS-API application, reported by Richard Evans (CVE-2009-0845). An incorrect length check inside an ASN.1 decoder leading to spurious malloc() failures (CVE-2009-0847). Impact : A remote unauthenticated attacker could exploit the first vulnerability to cause a Denial of Service or, in unlikely circumstances, execute arbitrary code on the host running krb5kdc or kadmind with root privileges and compromise the Kerberos key database. Exploitation of the other vulnerabilities might lead to a Denial of Service in kadmind, krb5kdc, or other daemons performing authorization against Kerberos that utilize GSS-API or an information disclosure. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id36137
    published2009-04-11
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/36137
    titleGLSA-200904-09 : MIT Kerberos 5: Multiple vulnerabilities
  • NASL familySuSE Local Security Checks
    NASL idSUSE_KRB5-6139.NASL
    descriptionClients sending negotiation requests with invalid flags could crash the kerberos server (CVE-2009-0845). GSS-API clients could crash when reading from an invalid address space (CVE-2009-0844). Invalid length checks could crash applications using the kerberos ASN.1 parser (CVE-2009-0847). Under certain circumstances the ASN.1 parser could free an uninitialized pointer which could crash a kerberos server or even lead to execution of arbitrary code (CVE-2009-0846).
    last seen2020-06-01
    modified2020-06-02
    plugin id36122
    published2009-04-09
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/36122
    titleopenSUSE 10 Security Update : krb5 (krb5-6139)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2009-0410.NASL
    descriptionUpdated krb5 packages that fix a security issue are now available for Red Hat Enterprise Linux 2.1 and 3. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer or, possibly, execute arbitrary code with the privileges of the user running the service. (CVE-2009-0846) All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.
    last seen2020-06-01
    modified2020-06-02
    plugin id36114
    published2009-04-08
    reporterThis script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/36114
    titleRHEL 2.1 / 3 : krb5 (RHSA-2009:0410)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2009-0408.NASL
    descriptionUpdated krb5 packages that fix various security issues are now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). The Generic Security Service Application Program Interface (GSS-API) definition provides security services to callers (protocols) in a generic fashion. The Simple and Protected GSS-API Negotiation (SPNEGO) mechanism is used by GSS-API peers to choose from a common set of security mechanisms. An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer. (CVE-2009-0846) Multiple input validation flaws were found in the MIT Kerberos GSS-API library
    last seen2020-06-01
    modified2020-06-02
    plugin id43739
    published2010-01-06
    reporterThis script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/43739
    titleCentOS 5 : krb5 (CESA-2009:0408)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2009-2852.NASL
    descriptionThis update incorporates patches to fix potential read overflow and NULL pointer dereferences in the implementation of the SPNEGO GSSAPI mechanism (CVE-2009-0844, CVE-2009-0845), attempts to free an uninitialized pointer during protocol parsing (CVE-2009-0846), and a bug in length validation during protocol parsing (CVE-2009-0847). 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 seen2020-06-01
    modified2020-06-02
    plugin id36660
    published2009-04-23
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/36660
    titleFedora 10 : krb5-1.6.3-18.fc10 (2009-2852)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_KRB5-6140.NASL
    descriptionClients sending negotiation requests with invalid flags could crash the kerberos server. (CVE-2009-0845) GSS-API clients could crash when reading from an invalid address space. (CVE-2009-0844) Invalid length checks could crash applications using the kerberos ASN.1 parser. (CVE-2009-0847) Under certain circumstances the ASN.1 parser could free an uninitialized pointer which could crash a kerberos server or even lead to execution of arbitrary code. (CVE-2009-0846)
    last seen2020-06-01
    modified2020-06-02
    plugin id41542
    published2009-09-24
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/41542
    titleSuSE 10 Security Update : Kerberos (ZYPP Patch Number 6140)
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2009-0003.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : CVE-2009-0844 The get_input_token function in the SPNEGO implementation in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to cause a denial of service (daemon crash) and possibly obtain sensitive information via a crafted length value that triggers a buffer over-read. CVE-2009-0845 The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token. CVE-2009-0846 The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer. - update to revised patch for (CVE-2009-0844, CVE-2009-0845) - add fix for potential buffer read overrun in the SPNEGO GSSAPI mechanism (#490635, CVE-2009-0844) - add fix for NULL pointer dereference when handling certain error cases in the SPNEGO GSSAPI mechanism (#490635, CVE-2009-0845) - add fix for attempt to free uninitialized pointer in the ASN.1 decoder (#490635, CVE-2009-0846) - add fix for bug in length validation in the ASN.1 decoder (CVE-2009-0847) - add backport of svn patch to fix a bug in how the gssapi library handles certain error cases in gss_accept_sec_context (CVE-2009-0845, - add a backported patch which adds a check on credentials obtained from a foreign realm to make sure that they
    last seen2020-06-01
    modified2020-06-02
    plugin id79452
    published2014-11-26
    reporterThis script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79452
    titleOracleVM 2.1 : krb5 (OVMSA-2009-0003)
  • NASL familyMisc.
    NASL idVMWARE_VMSA-2009-0008_REMOTE.NASL
    descriptionThe remote VMware ESX host is missing a security-related patch. It is, therefore, affected by multiple vulnerabilities : - An out-of-bounds read error exists in the MIT Kerberos SPNEGO implementation in the get_input_token() function. A remote attacker can exploit this, via a crafted length value, to cause a denial of service or to obtain access to sensitive information. (CVE-2009-0844) - A NULL pointer dereference flaw exists in MIT Kerberos in the spnego_gss_accept_sec_context() function when SPNEGO is used. A remote attacker can exploit this, via invalid ContextFlags data in the
    last seen2020-06-01
    modified2020-06-02
    plugin id89114
    published2016-03-03
    reporterThis script is Copyright (C) 2016-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/89114
    titleVMware ESX Multiple Vulnerabilities (VMSA-2009-0008) (remote check)
  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_10_5_7.NASL
    descriptionThe remote host is running a version of Mac OS X 10.5.x that is prior to 10.5.7. Mac OS X 10.5.7 contains security fixes for the following products : - Apache - ATS - BIND - CFNetwork - CoreGraphics - Cscope - CUPS - Disk Images - enscript - Flash Player plug-in - Help Viewer - iChat - International Components for Unicode - IPSec - Kerberos - Kernel - Launch Services - libxml - Net-SNMP - Network Time - Networking - OpenSSL - PHP - QuickDraw Manager - ruby - Safari - Spotlight - system_cmds - telnet - Terminal - WebKit - X11
    last seen2020-06-01
    modified2020-06-02
    plugin id38744
    published2009-05-13
    reporterThis script is Copyright (C) 2009-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/38744
    titleMac OS X 10.5.x < 10.5.7 Multiple Vulnerabilities
  • NASL familySuSE Local Security Checks
    NASL idSUSE_11_KRB5-090406.NASL
    descriptionClients sending negotiation requests with invalid flags could crash the kerberos server. (CVE-2009-0845) GSS-API clients could crash when reading from an invalid address space. (CVE-2009-0844) Invalid length checks could crash applications using the kerberos ASN.1 parser. (CVE-2009-0847) Under certain circumstances the ASN.1 parser could free an uninitialized pointer which could crash a kerberos server or even lead to execution of arbitrary code. (CVE-2009-0846)
    last seen2020-06-01
    modified2020-06-02
    plugin id41415
    published2009-09-24
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/41415
    titleSuSE 11 Security Update : Kerberos (SAT Patch Number 738)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2009-2834.NASL
    descriptionThis update incorporates patches to fix potential read overflow and NULL pointer dereferences in the implementation of the SPNEGO GSSAPI mechanism (CVE-2009-0844, CVE-2009-0845), attempts to free an uninitialized pointer during protocol parsing (CVE-2009-0846), and a bug in length validation during protocol parsing (CVE-2009-0847). 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 seen2020-06-01
    modified2020-06-02
    plugin id36108
    published2009-04-08
    reporterThis script is Copyright (C) 2009-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/36108
    titleFedora 9 : krb5-1.6.3-16.fc9 (2009-2834)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2009-0410.NASL
    descriptionFrom Red Hat Security Advisory 2009:0410 : Updated krb5 packages that fix a security issue are now available for Red Hat Enterprise Linux 2.1 and 3. This update has been rated as having critical security impact by the Red Hat Security Response Team. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). An input validation flaw was found in the ASN.1 (Abstract Syntax Notation One) decoder used by MIT Kerberos. A remote attacker could use this flaw to crash a network service using the MIT Kerberos library, such as kadmind or krb5kdc, by causing it to dereference or free an uninitialized pointer or, possibly, execute arbitrary code with the privileges of the user running the service. (CVE-2009-0846) All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. All running services using the MIT Kerberos libraries must be restarted for the update to take effect.
    last seen2020-06-01
    modified2020-06-02
    plugin id67838
    published2013-07-12
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/67838
    titleOracle Linux 3 : krb5 (ELSA-2009-0410)

Oval

  • accepted2014-01-20T04:01:26.077-05:00
    classvulnerability
    contributors
    • nameMichael Wood
      organizationHewlett-Packard
    • nameJ. Daniel Brown
      organizationDTCC
    • nameChris Coffin
      organizationThe MITRE Corporation
    definition_extensions
    • commentVMWare ESX Server 3.0.3 is installed
      ovaloval:org.mitre.oval:def:6026
    • commentVMware ESX Server 4.0 is installed
      ovaloval:org.mitre.oval:def:6293
    • commentVMware ESX Server 3.5.0 is installed
      ovaloval:org.mitre.oval:def:5887
    • commentVMWare ESX Server 3.0.2 is installed
      ovaloval:org.mitre.oval:def:5613
    descriptionThe get_input_token function in the SPNEGO implementation in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to cause a denial of service (daemon crash) and possibly obtain sensitive information via a crafted length value that triggers a buffer over-read.
    familyunix
    idoval:org.mitre.oval:def:6339
    statusaccepted
    submitted2009-09-23T15:39:02.000-04:00
    titleMIT Kerberos SPNEGO and ASN.1 Multiple Remote Denial Of Service Vulnerabilities
    version8
  • accepted2013-04-29T04:19:39.503-04:00
    classvulnerability
    contributors
    • nameAharon Chernin
      organizationSCAP.com, LLC
    • nameDragos Prisaca
      organizationG2, Inc.
    definition_extensions
    • commentThe operating system installed on the system is Red Hat Enterprise Linux 5
      ovaloval:org.mitre.oval:def:11414
    • commentThe operating system installed on the system is CentOS Linux 5.x
      ovaloval:org.mitre.oval:def:15802
    • commentOracle Linux 5.x
      ovaloval:org.mitre.oval:def:15459
    descriptionThe get_input_token function in the SPNEGO implementation in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to cause a denial of service (daemon crash) and possibly obtain sensitive information via a crafted length value that triggers a buffer over-read.
    familyunix
    idoval:org.mitre.oval:def:9474
    statusaccepted
    submitted2010-07-09T03:56:16-04:00
    titleThe get_input_token function in the SPNEGO implementation in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3 allows remote attackers to cause a denial of service (daemon crash) and possibly obtain sensitive information via a crafted length value that triggers a buffer over-read.
    version18

Redhat

advisories
rhsa
idRHSA-2009:0408
rpms
  • krb5-debuginfo-0:1.6.1-31.el5_3.3
  • krb5-devel-0:1.6.1-31.el5_3.3
  • krb5-libs-0:1.6.1-31.el5_3.3
  • krb5-server-0:1.6.1-31.el5_3.3
  • krb5-workstation-0:1.6.1-31.el5_3.3

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 34408 CVE(CAN) ID: CVE-2009-0844,CVE-2009-0847 Kerberos是一款广泛使用的使用强壮的加密来验证客户端和服务器端的网络协议。MIT Kerberos 5是一种常用的开源Kerberos实现。 krb5在实现SPNEGO GSS-API机制时get_input_token()函数可能会读过网络输入缓冲区的末尾,如果读取了无效地址空间可能会导致任何使用Kerberos GSS-API库来认证用户的网络服务崩溃。 krb5的ASN.1解码器中asn1buf_imbed()函数没有执行正确的长度检查,远程攻击者可以利用这个漏洞导致使用Kerberos库的网络服务(如kadmind或krb5kdc)引用或释放未初始化的指针,造成崩溃。 MIT Kerberos 5 1.5 厂商补丁: MIT --- 目前厂商已经发布了升级补丁以修复这个安全问题,请到厂商的主页下载: <a href=http://web.mit.edu/kerberos/advisories/2009-001-patch.txt target=_blank rel=external nofollow>http://web.mit.edu/kerberos/advisories/2009-001-patch.txt</a> RedHat ------ RedHat已经为此发布了一个安全公告(RHSA-2009:0408-01)以及相应补丁: RHSA-2009:0408-01:Important: krb5 security update 链接:<a href=https://www.redhat.com/support/errata/RHSA-2009-0408.html target=_blank rel=external nofollow>https://www.redhat.com/support/errata/RHSA-2009-0408.html</a>
idSSV:5022
last seen2017-11-19
modified2009-04-10
published2009-04-10
reporterRoot
titleMIT Kerberos SPNEGO和ASN.1多个拒绝服务漏洞

References