Fedora Core 3 : krb5-1.3.6-5 (2005-270)

2012-09-24T00:00:00
ID FEDORA_2005-270.NASL
Type nessus
Reporter Tenable
Modified 2018-07-19T00:00:00

Description

Updated krb5 packages which fix two buffer overflow vulnerabilities in the included Kerberos-aware telnet client are now available.

Kerberos is a networked authentication system which uses a trusted third-party (a KDC) to authenticate clients and servers to each other.

The krb5-workstation package includes a Kerberos-aware telnet client. Two buffer overflow flaws were discovered in the way the telnet client handles messages from a server. An attacker may be able to execute arbitrary code on a victim's machine if the victim can be tricked into connecting to a malicious telnet server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2005-0468 and CVE-2005-0469 to these issues.

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.

                                        
                                            #%NASL_MIN_LEVEL 70103

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2005-270.
#

include("compat.inc");

if (description)
{
  script_id(62255);
  script_version("1.7");
  script_cvs_date("Date: 2018/07/19 23:19:04");

  script_cve_id("CVE-2005-0468", "CVE-2005-0469");
  script_xref(name:"FEDORA", value:"2005-270");

  script_name(english:"Fedora Core 3 : krb5-1.3.6-5 (2005-270)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora Core host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated krb5 packages which fix two buffer overflow vulnerabilities in
the included Kerberos-aware telnet client are now available.

Kerberos is a networked authentication system which uses a trusted
third-party (a KDC) to authenticate clients and servers to each other.

The krb5-workstation package includes a Kerberos-aware telnet client.
Two buffer overflow flaws were discovered in the way the telnet client
handles messages from a server. An attacker may be able to execute
arbitrary code on a victim's machine if the victim can be tricked into
connecting to a malicious telnet server. The Common Vulnerabilities
and Exposures project (cve.mitre.org) has assigned the names
CVE-2005-0468 and CVE-2005-0469 to these issues.

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."
  );
  # https://lists.fedoraproject.org/pipermail/announce/2005-March/000814.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b879f067"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:krb5-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:krb5-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:krb5-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:krb5-server");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:krb5-workstation");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora_core:3");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/03/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/09/24");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2018 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

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

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^3([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 3.x", "Fedora " + os_ver);

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

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

flag = 0;
if (rpm_check(release:"FC3", reference:"krb5-debuginfo-1.3.6-5")) flag++;
if (rpm_check(release:"FC3", reference:"krb5-devel-1.3.6-5")) flag++;
if (rpm_check(release:"FC3", reference:"krb5-libs-1.3.6-5")) flag++;
if (rpm_check(release:"FC3", reference:"krb5-server-1.3.6-5")) flag++;
if (rpm_check(release:"FC3", reference:"krb5-workstation-1.3.6-5")) 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-debuginfo / krb5-devel / krb5-libs / krb5-server / etc");
}