Vulnerabilities > CVE-2015-8629 - Out-of-bounds Read vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2016:0430-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(88708);
  script_version("1.9");
  script_cvs_date("Date: 2019/09/11 11:22:13");

  script_cve_id("CVE-2015-8629", "CVE-2015-8631");

  script_name(english:"SUSE SLED11 / SLES11 Security Update : krb5 (SUSE-SU-2016:0430-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for krb5 fixes the following issues :

  - CVE-2015-8629: Information leak authenticated attackers
    with permissions to modify the database (bsc#963968)

  - CVE-2015-8631: An authenticated attacker could have
    caused a memory leak in auditd by supplying a null
    principal name in request (bsc#963975)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE 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.suse.com/show_bug.cgi?id=963968"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=963975"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8629/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8631/"
  );
  # https://www.suse.com/support/update/announcement/2016/suse-su-20160430-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1c7f81de"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 11-SP4 :

zypper in -t patch sdksp4-krb5-12397=1

SUSE Linux Enterprise Server 11-SP4 :

zypper in -t patch slessp4-krb5-12397=1

SUSE Linux Enterprise Desktop 11-SP4 :

zypper in -t patch sledsp4-krb5-12397=1

SUSE Linux Enterprise Debuginfo 11-SP4 :

zypper in -t patch dbgsp4-krb5-12397=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C");
  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:L/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:novell:suse_linux:krb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:krb5-apps-clients");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:krb5-apps-servers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:krb5-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:krb5-server");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/02/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/02/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED11|SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED11 / SLES11", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP4", os_ver + " SP" + sp);
if (os_ver == "SLED11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLED11 SP4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"krb5-32bit-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"s390x", reference:"krb5-32bit-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"krb5-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"krb5-apps-clients-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"krb5-apps-servers-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"krb5-client-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"krb5-server-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"x86_64", reference:"krb5-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"x86_64", reference:"krb5-client-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"x86_64", reference:"krb5-32bit-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"i586", reference:"krb5-1.6.3-133.49.106.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"i586", reference:"krb5-client-1.6.3-133.49.106.1")) 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, "krb5");
}

#
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from OracleVM
# Security Advisory OVMSA-2016-0039.
#

include("compat.inc");

if (description)
{
  script_id(90138);
  script_version("2.13");
  script_cvs_date("Date: 2019/09/27 13:00:35");

  script_cve_id("CVE-2014-5353", "CVE-2014-5355", "CVE-2015-8629", "CVE-2015-8631");
  script_bugtraq_id(71679, 74042);

  script_name(english:"OracleVM 3.3 / 3.4 : krb5 (OVMSA-2016-0039)");
  script_summary(english:"Checks the RPM output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote OracleVM host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote OracleVM system is missing necessary patches to address
critical security updates :

  - Fix (CVE-2015-8629, CVE-2015-8631)

  - Also fix a spec trigger issue that prevents building

  - Resolves: #1306973"
  );
  # https://oss.oracle.com/pipermail/oraclevm-errata/2016-March/000445.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e07cde0a"
  );
  # https://oss.oracle.com/pipermail/oraclevm-errata/2016-March/000450.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ce35e9e3"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected krb5-libs package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C");
  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:L/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:vm:krb5-libs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:vm_server:3.4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/12/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/03/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"OracleVM Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleVM/release", "Host/OracleVM/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/OracleVM/release");
if (isnull(release) || "OVS" >!< release) audit(AUDIT_OS_NOT, "OracleVM");
if (! preg(pattern:"^OVS" + "(3\.3|3\.4)" + "(\.[0-9]|$)", string:release)) audit(AUDIT_OS_NOT, "OracleVM 3.3 / 3.4", "OracleVM " + release);
if (!get_kb_item("Host/OracleVM/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, "OracleVM", cpu);
if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu);

flag = 0;
if (rpm_check(release:"OVS3.3", reference:"krb5-libs-1.10.3-42z1.el6_7")) flag++;

if (rpm_check(release:"OVS3.4", reference:"krb5-libs-1.10.3-42z1.el6_7")) 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, "krb5-libs");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

include("compat.inc");

if (description)
{
  script_id(90344);
  script_version("2.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/25");

  script_cve_id("CVE-2015-8629", "CVE-2015-8630", "CVE-2015-8631");

  script_name(english:"Scientific Linux Security Update : krb5 on SL7.x x86_64 (20160404)");
  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:
"Security Fix(es) :

  - A memory leak flaw was found in the krb5_unparse_name()
    function of the MIT Kerberos kadmind service. An
    authenticated attacker could repeatedly send specially
    crafted requests to the server, which could cause the
    server to consume large amounts of memory resources,
    ultimately leading to a denial of service due to memory
    exhaustion. (CVE-2015-8631)

  - An out-of-bounds read flaw was found in the kadmind
    service of MIT Kerberos. An authenticated attacker could
    send a maliciously crafted message to force kadmind to
    read beyond the end of allocated memory, and write the
    memory contents to the KDC database if the attacker has
    write permission, leading to information disclosure.
    (CVE-2015-8629)

  - A NULL pointer dereference flaw was found in the
    procedure used by the MIT Kerberos kadmind service to
    store policies: the kadm5_create_principal_3() and
    kadm5_modify_principal() function did not ensure that a
    policy was given when KADM5_POLICY was set. An
    authenticated attacker with permissions to modify the
    database could use this flaw to add or modify a
    principal with a policy set to NULL, causing the kadmind
    service to crash. (CVE-2015-8630)"
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1604&L=scientific-linux-errata&F=&S=&P=76
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?1dbfa680"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A: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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:krb5-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:krb5-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:krb5-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:krb5-pkinit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:krb5-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:krb5-server-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fermilab:scientific_linux:krb5-workstation");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/04/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/04/05");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 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:"krb5-debuginfo-1.13.2-12.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"krb5-devel-1.13.2-12.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"krb5-libs-1.13.2-12.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"krb5-pkinit-1.13.2-12.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"krb5-server-1.13.2-12.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"krb5-server-ldap-1.13.2-12.el7_2")) flag++;
if (rpm_check(release:"SL7", cpu:"x86_64", reference:"krb5-workstation-1.13.2-12.el7_2")) 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, "krb5-debuginfo / krb5-devel / krb5-libs / krb5-pkinit / krb5-server / etc");
}