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nessusThis script is Copyright (C) 2013-2021 Tenable Network Security, Inc.REDHAT-RHSA-2008-0182.NASL
HistoryJan 24, 2013 - 12:00 a.m.

RHEL 4 : krb5 (RHSA-2008:0182)

2013-01-2400:00:00
This script is Copyright (C) 2013-2021 Tenable Network Security, Inc.
www.tenable.com
12

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.602 Medium

EPSS

Percentile

97.8%

Updated krb5 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4.5 Extended Update Support.

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 through use of symmetric encryption and a trusted third party, the KDC.

A flaw was found in the way the MIT Kerberos Authentication Service and Key Distribution Center server (krb5kdc) handled Kerberos v4 protocol packets. An unauthenticated remote attacker could use this flaw to crash the krb5kdc daemon, disclose portions of its memory, or possibly execute arbitrary code using malformed or truncated Kerberos v4 protocol requests. (CVE-2008-0062, CVE-2008-0063)

This issue only affected krb5kdc with Kerberos v4 protocol compatibility enabled, which is the default setting on Red Hat Enterprise Linux 4. Kerberos v4 protocol support can be disabled by adding ‘v4_mode=none’ (without the quotes) to the ‘[kdcdefaults]’ section of /var/kerberos/krb5kdc/kdc.conf.

Red Hat would like to thank MIT for reporting these issues.

All krb5 users are advised to update to these erratum packages which contain backported fixes to correct these issues.

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2008:0182. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(63850);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2008-0062", "CVE-2008-0063");
  script_xref(name:"RHSA", value:"2008:0182");

  script_name(english:"RHEL 4 : krb5 (RHSA-2008:0182)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated krb5 packages that fix multiple security issues are now
available for Red Hat Enterprise Linux 4.5 Extended Update Support.

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 through use of symmetric
encryption and a trusted third party, the KDC.

A flaw was found in the way the MIT Kerberos Authentication Service
and Key Distribution Center server (krb5kdc) handled Kerberos v4
protocol packets. An unauthenticated remote attacker could use this
flaw to crash the krb5kdc daemon, disclose portions of its memory, or
possibly execute arbitrary code using malformed or truncated Kerberos
v4 protocol requests. (CVE-2008-0062, CVE-2008-0063)

This issue only affected krb5kdc with Kerberos v4 protocol
compatibility enabled, which is the default setting on Red Hat
Enterprise Linux 4. Kerberos v4 protocol support can be disabled by
adding 'v4_mode=none' (without the quotes) to the '[kdcdefaults]'
section of /var/kerberos/krb5kdc/kdc.conf.

Red Hat would like to thank MIT for reporting these issues.

All krb5 users are advised to update to these erratum packages which
contain backported fixes to correct these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.redhat.com/security/data/cve/CVE-2008-0062.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.redhat.com/security/data/cve/CVE-2008-0063.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://rhn.redhat.com/errata/RHSA-2008-0182.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_cwe_id(119, 189);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:krb5-workstation");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4.5");

  script_set_attribute(attribute:"patch_publication_date", value:"2008/03/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/24");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 Tenable Network Security, Inc.");
  script_family(english:"Red Hat Local Security Checks");

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

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

flag = 0;
if (rpm_check(release:"RHEL4", sp:"5", reference:"krb5-devel-1.3.4-49.el4_5.1")) flag++;
if (rpm_check(release:"RHEL4", sp:"5", reference:"krb5-libs-1.3.4-49.el4_5.1")) flag++;
if (rpm_check(release:"RHEL4", sp:"5", reference:"krb5-server-1.3.4-49.el4_5.1")) flag++;
if (rpm_check(release:"RHEL4", sp:"5", reference:"krb5-workstation-1.3.4-49.el4_5.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
VendorProductVersionCPE
redhatenterprise_linuxkrb5-develp-cpe:/a:redhat:enterprise_linux:krb5-devel
redhatenterprise_linuxkrb5-libsp-cpe:/a:redhat:enterprise_linux:krb5-libs
redhatenterprise_linuxkrb5-serverp-cpe:/a:redhat:enterprise_linux:krb5-server
redhatenterprise_linuxkrb5-workstationp-cpe:/a:redhat:enterprise_linux:krb5-workstation
redhatenterprise_linux4.5cpe:/o:redhat:enterprise_linux:4.5

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.602 Medium

EPSS

Percentile

97.8%