Vulnerabilities > CVE-2015-3276

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
HIGH
Availability impact
NONE
network
low complexity
openldap
oracle
redhat
nessus

Summary

The nss_parse_ciphers function in libraries/libldap/tls_m.c in OpenLDAP does not properly parse OpenSSL-style multi-keyword mode cipher strings, which might cause a weaker than intended cipher to be used and allow remote attackers to have unspecified impact via unknown vectors.

Vulnerable Configurations

Part Description Count
Application
Openldap
58
OS
Oracle
1
OS
Redhat
16

Nessus

  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2015-2131.NASL
    descriptionFrom Red Hat Security Advisory 2015:2131 : Updated openldap packages that fix one security issue, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. OpenLDAP is an open source suite of Lightweight Directory Access Protocol (LDAP) applications and development tools. LDAP is a set of protocols used to access and maintain distributed directory information services over an IP network. The openldap packages contain configuration files, libraries, and documentation for OpenLDAP. A flaw was found in the way OpenLDAP parsed OpenSSL-style cipher strings. As a result, OpenLDAP could potentially use ciphers that were not intended to be enabled. (CVE-2015-3276) This issue was discovered by Martin Poole of the Red Hat Software Maintenance Engineering group. The openldap packages have been upgraded to upstream version 2.4.40, which provides a number of bug fixes and one enhancement over the previous version : * The ORDERING matching rules have been added to the ppolicy attribute type descriptions. * The server no longer terminates unexpectedly when processing SRV records. * Missing objectClass information has been added, which enables the user to modify the front-end configuration by standard means. (BZ#1147982) This update also fixes the following bugs : * Previously, OpenLDAP did not properly handle a number of simultaneous updates. As a consequence, sending a number of parallel update requests to the server could cause a deadlock. With this update, a superfluous locking mechanism causing the deadlock has been removed, thus fixing the bug. (BZ#1125152) * The httpd service sometimes terminated unexpectedly with a segmentation fault on the libldap library unload. The underlying source code has been modified to prevent a bad memory access error that caused the bug to occur. As a result, httpd no longer crashes in this situation. (BZ#1158005) * After upgrading the system from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7, symbolic links to certain libraries unexpectedly pointed to locations belonging to the openldap-devel package. If the user uninstalled openldap-devel, the symbolic links were broken and the
    last seen2020-06-01
    modified2020-06-02
    plugin id87023
    published2015-11-24
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87023
    titleOracle Linux 7 : openldap (ELSA-2015-2131)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from Red Hat Security Advisory RHSA-2015:2131 and 
    # Oracle Linux Security Advisory ELSA-2015-2131 respectively.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(87023);
      script_version("1.11");
      script_cvs_date("Date: 2020/01/10");
    
      script_cve_id("CVE-2014-8182", "CVE-2015-3276");
      script_xref(name:"RHSA", value:"2015:2131");
    
      script_name(english:"Oracle Linux 7 : openldap (ELSA-2015-2131)");
      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 2015:2131 :
    
    Updated openldap packages that fix one security issue, several bugs,
    and add one enhancement are now available for Red Hat Enterprise Linux
    7.
    
    Red Hat Product Security has rated this update as having Moderate
    security impact. A Common Vulnerability Scoring System (CVSS) base
    score, which gives a detailed severity rating, is available from the
    CVE link in the References section.
    
    OpenLDAP is an open source suite of Lightweight Directory Access
    Protocol (LDAP) applications and development tools. LDAP is a set of
    protocols used to access and maintain distributed directory
    information services over an IP network. The openldap packages contain
    configuration files, libraries, and documentation for OpenLDAP.
    
    A flaw was found in the way OpenLDAP parsed OpenSSL-style cipher
    strings. As a result, OpenLDAP could potentially use ciphers that were
    not intended to be enabled. (CVE-2015-3276)
    
    This issue was discovered by Martin Poole of the Red Hat Software
    Maintenance Engineering group.
    
    The openldap packages have been upgraded to upstream version 2.4.40,
    which provides a number of bug fixes and one enhancement over the
    previous version :
    
    * The ORDERING matching rules have been added to the ppolicy attribute
    type descriptions.
    
    * The server no longer terminates unexpectedly when processing SRV
    records.
    
    * Missing objectClass information has been added, which enables the
    user to modify the front-end configuration by standard means.
    
    (BZ#1147982)
    
    This update also fixes the following bugs :
    
    * Previously, OpenLDAP did not properly handle a number of
    simultaneous updates. As a consequence, sending a number of parallel
    update requests to the server could cause a deadlock. With this
    update, a superfluous locking mechanism causing the deadlock has been
    removed, thus fixing the bug. (BZ#1125152)
    
    * The httpd service sometimes terminated unexpectedly with a
    segmentation fault on the libldap library unload. The underlying
    source code has been modified to prevent a bad memory access error
    that caused the bug to occur. As a result, httpd no longer crashes in
    this situation. (BZ#1158005)
    
    * After upgrading the system from Red Hat Enterprise Linux 6 to Red
    Hat Enterprise Linux 7, symbolic links to certain libraries
    unexpectedly pointed to locations belonging to the openldap-devel
    package. If the user uninstalled openldap-devel, the symbolic links
    were broken and the 'rpm -V openldap' command sometimes produced
    errors. With this update, the symbolic links no longer get broken in
    the described situation. If the user downgrades openldap to version
    2.4.39-6 or earlier, the symbolic links might break. After such
    downgrade, it is recommended to verify that the symbolic links did not
    break. To do this, make sure the yum-plugin-verify package is
    installed and obtain the target libraries by running the 'rpm -V
    openldap' or 'yum verify openldap' command. (BZ#1230263)
    
    In addition, this update adds the following enhancement :
    
    * OpenLDAP clients now automatically choose the Network Security
    Services (NSS) default cipher suites for communication with the
    server. It is no longer necessary to maintain the default cipher
    suites manually in the OpenLDAP source code. (BZ#1245279)
    
    All openldap users are advised to upgrade to these updated packages,
    which correct these issues and add this enhancement."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://oss.oracle.com/pipermail/el-errata/2015-November/005558.html"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected openldap packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:oracle:linux:openldap");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openldap-clients");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openldap-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openldap-servers");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:openldap-servers-sql");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:7");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2015/12/07");
      script_set_attribute(attribute:"patch_publication_date", value:"2015/11/23");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/11/24");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015-2020 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:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 7", "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 && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);
    if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
    
    flag = 0;
    if (rpm_check(release:"EL7", cpu:"x86_64", reference:"openldap-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"EL7", cpu:"x86_64", reference:"openldap-clients-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"EL7", cpu:"x86_64", reference:"openldap-devel-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"EL7", cpu:"x86_64", reference:"openldap-servers-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"EL7", cpu:"x86_64", reference:"openldap-servers-sql-2.4.40-8.el7")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
      else security_warning(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openldap / openldap-clients / openldap-devel / openldap-servers / etc");
    }
    
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2015-2131.NASL
    descriptionUpdated openldap packages that fix one security issue, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. OpenLDAP is an open source suite of Lightweight Directory Access Protocol (LDAP) applications and development tools. LDAP is a set of protocols used to access and maintain distributed directory information services over an IP network. The openldap packages contain configuration files, libraries, and documentation for OpenLDAP. A flaw was found in the way OpenLDAP parsed OpenSSL-style cipher strings. As a result, OpenLDAP could potentially use ciphers that were not intended to be enabled. (CVE-2015-3276) This issue was discovered by Martin Poole of the Red Hat Software Maintenance Engineering group. The openldap packages have been upgraded to upstream version 2.4.40, which provides a number of bug fixes and one enhancement over the previous version : * The ORDERING matching rules have been added to the ppolicy attribute type descriptions. * The server no longer terminates unexpectedly when processing SRV records. * Missing objectClass information has been added, which enables the user to modify the front-end configuration by standard means. (BZ#1147982) This update also fixes the following bugs : * Previously, OpenLDAP did not properly handle a number of simultaneous updates. As a consequence, sending a number of parallel update requests to the server could cause a deadlock. With this update, a superfluous locking mechanism causing the deadlock has been removed, thus fixing the bug. (BZ#1125152) * The httpd service sometimes terminated unexpectedly with a segmentation fault on the libldap library unload. The underlying source code has been modified to prevent a bad memory access error that caused the bug to occur. As a result, httpd no longer crashes in this situation. (BZ#1158005) * After upgrading the system from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7, symbolic links to certain libraries unexpectedly pointed to locations belonging to the openldap-devel package. If the user uninstalled openldap-devel, the symbolic links were broken and the
    last seen2020-06-01
    modified2020-06-02
    plugin id87132
    published2015-12-02
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87132
    titleCentOS 7 : openldap (CESA-2015:2131)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Red Hat Security Advisory RHSA-2015:2131 and 
    # CentOS Errata and Security Advisory 2015:2131 respectively.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(87132);
      script_version("2.11");
      script_cvs_date("Date: 2020/01/10");
    
      script_cve_id("CVE-2014-8182", "CVE-2015-3276");
      script_xref(name:"RHSA", value:"2015:2131");
    
      script_name(english:"CentOS 7 : openldap (CESA-2015:2131)");
      script_summary(english:"Checks rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote CentOS host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Updated openldap packages that fix one security issue, several bugs,
    and add one enhancement are now available for Red Hat Enterprise Linux
    7.
    
    Red Hat Product Security has rated this update as having Moderate
    security impact. A Common Vulnerability Scoring System (CVSS) base
    score, which gives a detailed severity rating, is available from the
    CVE link in the References section.
    
    OpenLDAP is an open source suite of Lightweight Directory Access
    Protocol (LDAP) applications and development tools. LDAP is a set of
    protocols used to access and maintain distributed directory
    information services over an IP network. The openldap packages contain
    configuration files, libraries, and documentation for OpenLDAP.
    
    A flaw was found in the way OpenLDAP parsed OpenSSL-style cipher
    strings. As a result, OpenLDAP could potentially use ciphers that were
    not intended to be enabled. (CVE-2015-3276)
    
    This issue was discovered by Martin Poole of the Red Hat Software
    Maintenance Engineering group.
    
    The openldap packages have been upgraded to upstream version 2.4.40,
    which provides a number of bug fixes and one enhancement over the
    previous version :
    
    * The ORDERING matching rules have been added to the ppolicy attribute
    type descriptions.
    
    * The server no longer terminates unexpectedly when processing SRV
    records.
    
    * Missing objectClass information has been added, which enables the
    user to modify the front-end configuration by standard means.
    
    (BZ#1147982)
    
    This update also fixes the following bugs :
    
    * Previously, OpenLDAP did not properly handle a number of
    simultaneous updates. As a consequence, sending a number of parallel
    update requests to the server could cause a deadlock. With this
    update, a superfluous locking mechanism causing the deadlock has been
    removed, thus fixing the bug. (BZ#1125152)
    
    * The httpd service sometimes terminated unexpectedly with a
    segmentation fault on the libldap library unload. The underlying
    source code has been modified to prevent a bad memory access error
    that caused the bug to occur. As a result, httpd no longer crashes in
    this situation. (BZ#1158005)
    
    * After upgrading the system from Red Hat Enterprise Linux 6 to Red
    Hat Enterprise Linux 7, symbolic links to certain libraries
    unexpectedly pointed to locations belonging to the openldap-devel
    package. If the user uninstalled openldap-devel, the symbolic links
    were broken and the 'rpm -V openldap' command sometimes produced
    errors. With this update, the symbolic links no longer get broken in
    the described situation. If the user downgrades openldap to version
    2.4.39-6 or earlier, the symbolic links might break. After such
    downgrade, it is recommended to verify that the symbolic links did not
    break. To do this, make sure the yum-plugin-verify package is
    installed and obtain the target libraries by running the 'rpm -V
    openldap' or 'yum verify openldap' command. (BZ#1230263)
    
    In addition, this update adds the following enhancement :
    
    * OpenLDAP clients now automatically choose the Network Security
    Services (NSS) default cipher suites for communication with the
    server. It is no longer necessary to maintain the default cipher
    suites manually in the OpenLDAP source code. (BZ#1245279)
    
    All openldap users are advised to upgrade to these updated packages,
    which correct these issues and add this enhancement."
      );
      # https://lists.centos.org/pipermail/centos-cr-announce/2015-November/002516.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?3cc38519"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected openldap packages."
      );
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-3276");
      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:centos:centos:openldap");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openldap-clients");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openldap-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openldap-servers");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:openldap-servers-sql");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2015/12/07");
      script_set_attribute(attribute:"patch_publication_date", value:"2015/11/30");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/12/02");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"CentOS Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/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/CentOS/release");
    if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
    os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
    os_ver = os_ver[1];
    if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 7.x", "CentOS " + os_ver);
    
    if (!get_kb_item("Host/CentOS/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, "CentOS", cpu);
    
    
    flag = 0;
    if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openldap-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openldap-clients-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openldap-devel-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openldap-servers-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"CentOS-7", cpu:"x86_64", reference:"openldap-servers-sql-2.4.40-8.el7")) flag++;
    
    
    if (flag)
    {
      cr_plugin_caveat = '\n' +
        'NOTE: The security advisory associated with this vulnerability has a\n' +
        'fixed package version that may only be available in the continuous\n' +
        'release (CR) repository for CentOS, until it is present in the next\n' +
        'point release of CentOS.\n\n' +
    
        'If an equal or higher package level does not exist in the baseline\n' +
        'repository for your major version of CentOS, then updates from the CR\n' +
        'repository will need to be applied in order to address the\n' +
        'vulnerability.\n';
      security_report_v4(
        port       : 0,
        severity   : SECURITY_WARNING,
        extra      : rpm_report_get() + cr_plugin_caveat
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openldap / openldap-clients / openldap-devel / openldap-servers / etc");
    }
    
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20151119_OPENLDAP_ON_SL7_X.NASL
    descriptionA flaw was found in the way OpenLDAP parsed OpenSSL-style cipher strings. As a result, OpenLDAP could potentially use ciphers that were not intended to be enabled. (CVE-2015-3276) The openldap packages have been upgraded to upstream version 2.4.40, which provides a number of bug fixes and one enhancement over the previous version : - The ORDERING matching rules have been added to the ppolicy attribute type descriptions. * The server no longer terminates unexpectedly when processing SRV records. * Missing objectClass information has been added, which enables the user to modify the front-end configuration by standard means. This update also fixes the following bugs : - Previously, OpenLDAP did not properly handle a number of simultaneous updates. As a consequence, sending a number of parallel update requests to the server could cause a deadlock. With this update, a superfluous locking mechanism causing the deadlock has been removed, thus fixing the bug. - The httpd service sometimes terminated unexpectedly with a segmentation fault on the libldap library unload. The underlying source code has been modified to prevent a bad memory access error that caused the bug to occur. As a result, httpd no longer crashes in this situation. - After upgrading the system from Scientific Linux 6 to Scientific Linux 7, symbolic links to certain libraries unexpectedly pointed to locations belonging to the openldap-devel package. If the user uninstalled openldap- devel, the symbolic links were broken and the
    last seen2020-03-18
    modified2015-12-22
    plugin id87566
    published2015-12-22
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87566
    titleScientific Linux Security Update : openldap on SL7.x x86_64 (20151119)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text is (C) Scientific Linux.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(87566);
      script_version("2.3");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/25");
    
      script_cve_id("CVE-2015-3276");
    
      script_name(english:"Scientific Linux Security Update : openldap on SL7.x x86_64 (20151119)");
      script_summary(english:"Checks rpm output for the updated packages");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote Scientific Linux host is missing one or more security
    updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "A flaw was found in the way OpenLDAP parsed OpenSSL-style cipher
    strings. As a result, OpenLDAP could potentially use ciphers that were
    not intended to be enabled. (CVE-2015-3276)
    
    The openldap packages have been upgraded to upstream version 2.4.40,
    which provides a number of bug fixes and one enhancement over the
    previous version :
    
      - The ORDERING matching rules have been added to the
        ppolicy attribute type descriptions. * The server no
        longer terminates unexpectedly when processing SRV
        records. * Missing objectClass information has been
        added, which enables the user to modify the front-end
        configuration by standard means.
    
    This update also fixes the following bugs :
    
      - Previously, OpenLDAP did not properly handle a number of
        simultaneous updates. As a consequence, sending a number
        of parallel update requests to the server could cause a
        deadlock. With this update, a superfluous locking
        mechanism causing the deadlock has been removed, thus
        fixing the bug.
    
      - The httpd service sometimes terminated unexpectedly with
        a segmentation fault on the libldap library unload. The
        underlying source code has been modified to prevent a
        bad memory access error that caused the bug to occur. As
        a result, httpd no longer crashes in this situation.
    
      - After upgrading the system from Scientific Linux 6 to
        Scientific Linux 7, symbolic links to certain libraries
        unexpectedly pointed to locations belonging to the
        openldap-devel package. If the user uninstalled
        openldap- devel, the symbolic links were broken and the
        'rpm -V openldap' command sometimes produced errors.
        With this update, the symbolic links no longer get
        broken in the described situation. If the user
        downgrades openldap to version 2.4.39-6 or earlier, the
        symbolic links might break. After such downgrade, it is
        recommended to verify that the symbolic links did not
        break. To do this, make sure the yum-plugin-verify
        package is installed and obtain the target libraries by
        running the 'rpm -V openldap' or 'yum verify openldap'
        command.
    
    In addition, this update adds the following enhancement :
    
      - OpenLDAP clients now automatically choose the Network
        Security Services (NSS) default cipher suites for
        communication with the server. It is no longer necessary
        to maintain the default cipher suites manually in the
        OpenLDAP source code."
      );
      # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1512&L=scientific-linux-errata&F=&S=&P=9879
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?d769fef6"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:openldap");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:openldap-clients");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:openldap-debuginfo");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:openldap-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:openldap-servers");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:openldap-servers-sql");
      script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2015/12/07");
      script_set_attribute(attribute:"patch_publication_date", value:"2015/11/19");
      script_set_attribute(attribute:"plugin_publication_date", value:"2015/12/22");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Scientific Linux Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
    os_ver = pregmatch(pattern: "Scientific Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Scientific Linux");
    os_ver = os_ver[1];
    if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Scientific Linux 7.x", "Scientific 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 (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);
    if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);
    
    
    flag = 0;
    if (rpm_check(release:"SL7", cpu:"x86_64", reference:"openldap-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"SL7", cpu:"x86_64", reference:"openldap-clients-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"SL7", cpu:"x86_64", reference:"openldap-debuginfo-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"SL7", cpu:"x86_64", reference:"openldap-devel-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"SL7", cpu:"x86_64", reference:"openldap-servers-2.4.40-8.el7")) flag++;
    if (rpm_check(release:"SL7", cpu:"x86_64", reference:"openldap-servers-sql-2.4.40-8.el7")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_WARNING,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "openldap / openldap-clients / openldap-debuginfo / openldap-devel / etc");
    }
    
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2017-799.NASL
    descriptionA flaw was found in the way OpenLDAP parsed OpenSSL-style cipher strings. As a result, OpenLDAP could potentially use ciphers that were not intended to be enabled.
    last seen2020-06-01
    modified2020-06-02
    plugin id97149
    published2017-02-15
    reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/97149
    titleAmazon Linux AMI : openldap (ALAS-2017-799)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2015-2131.NASL
    descriptionUpdated openldap packages that fix one security issue, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. OpenLDAP is an open source suite of Lightweight Directory Access Protocol (LDAP) applications and development tools. LDAP is a set of protocols used to access and maintain distributed directory information services over an IP network. The openldap packages contain configuration files, libraries, and documentation for OpenLDAP. A flaw was found in the way OpenLDAP parsed OpenSSL-style cipher strings. As a result, OpenLDAP could potentially use ciphers that were not intended to be enabled. (CVE-2015-3276) This issue was discovered by Martin Poole of the Red Hat Software Maintenance Engineering group. The openldap packages have been upgraded to upstream version 2.4.40, which provides a number of bug fixes and one enhancement over the previous version : * The ORDERING matching rules have been added to the ppolicy attribute type descriptions. * The server no longer terminates unexpectedly when processing SRV records. * Missing objectClass information has been added, which enables the user to modify the front-end configuration by standard means. (BZ#1147982) This update also fixes the following bugs : * Previously, OpenLDAP did not properly handle a number of simultaneous updates. As a consequence, sending a number of parallel update requests to the server could cause a deadlock. With this update, a superfluous locking mechanism causing the deadlock has been removed, thus fixing the bug. (BZ#1125152) * The httpd service sometimes terminated unexpectedly with a segmentation fault on the libldap library unload. The underlying source code has been modified to prevent a bad memory access error that caused the bug to occur. As a result, httpd no longer crashes in this situation. (BZ#1158005) * After upgrading the system from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7, symbolic links to certain libraries unexpectedly pointed to locations belonging to the openldap-devel package. If the user uninstalled openldap-devel, the symbolic links were broken and the
    last seen2020-06-01
    modified2020-06-02
    plugin id86970
    published2015-11-20
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/86970
    titleRHEL 7 : openldap (RHSA-2015:2131)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2017-CEB1B8659E.NASL
    descriptionThis update should make OpenLDAP up to date with latest NSS, notably : - fix olcTLSProtocolMin handling - fix TLS_CIPHER_SUITE parsing - update a list of ciphers to fit latest NSS development - make use of NSS global settings for `DEFAULTS
    last seen2020-06-05
    modified2017-02-03
    plugin id96968
    published2017-02-03
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/96968
    titleFedora 25 : openldap (2017-ceb1b8659e)

Redhat

advisories
bugzilla
id1245279
titleOpenLDAP doesn't use sane (or default) cipher order
oval
OR
  • commentRed Hat Enterprise Linux must be installed
    ovaloval:com.redhat.rhba:tst:20070304026
  • AND
    • commentRed Hat Enterprise Linux 7 is installed
      ovaloval:com.redhat.rhba:tst:20150364027
    • OR
      • AND
        • commentopenldap-servers-sql is earlier than 0:2.4.40-8.el7
          ovaloval:com.redhat.rhsa:tst:20152131001
        • commentopenldap-servers-sql is signed with Red Hat redhatrelease2 key
          ovaloval:com.redhat.rhba:tst:20151292004
      • AND
        • commentopenldap is earlier than 0:2.4.40-8.el7
          ovaloval:com.redhat.rhsa:tst:20152131003
        • commentopenldap is signed with Red Hat redhatrelease2 key
          ovaloval:com.redhat.rhba:tst:20151292008
      • AND
        • commentopenldap-clients is earlier than 0:2.4.40-8.el7
          ovaloval:com.redhat.rhsa:tst:20152131005
        • commentopenldap-clients is signed with Red Hat redhatrelease2 key
          ovaloval:com.redhat.rhba:tst:20151292010
      • AND
        • commentopenldap-devel is earlier than 0:2.4.40-8.el7
          ovaloval:com.redhat.rhsa:tst:20152131007
        • commentopenldap-devel is signed with Red Hat redhatrelease2 key
          ovaloval:com.redhat.rhba:tst:20151292002
      • AND
        • commentopenldap-servers is earlier than 0:2.4.40-8.el7
          ovaloval:com.redhat.rhsa:tst:20152131009
        • commentopenldap-servers is signed with Red Hat redhatrelease2 key
          ovaloval:com.redhat.rhba:tst:20151292006
rhsa
idRHSA-2015:2131
released2015-11-19
severityModerate
titleRHSA-2015:2131: openldap security, bug fix, and enhancement update (Moderate)
rpms
  • openldap-0:2.4.40-8.el7
  • openldap-clients-0:2.4.40-8.el7
  • openldap-debuginfo-0:2.4.40-8.el7
  • openldap-devel-0:2.4.40-8.el7
  • openldap-servers-0:2.4.40-8.el7
  • openldap-servers-sql-0:2.4.40-8.el7