Updated krb5 packages which fix two buffer overflow vulnerabilities in the included Kerberos-aware telnet client are now available.
This update has been rated as having important security impact by the Red Hat Security Response Team.
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.
Users of krb5 should update to these erratum packages which contain a backported patch to correct this issue.
Red Hat would like to thank iDEFENSE for their responsible disclosure of this issue.
#%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-2005:330 and
# CentOS Errata and Security Advisory 2005:330 respectively.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(21803);
script_version("1.22");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2005-0468", "CVE-2005-0469");
script_xref(name:"RHSA", value:"2005:330");
script_name(english:"CentOS 3 : krb5 (CESA-2005:330)");
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 krb5 packages which fix two buffer overflow vulnerabilities in
the included Kerberos-aware telnet client are now available.
This update has been rated as having important security impact by the
Red Hat Security Response Team.
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.
Users of krb5 should update to these erratum packages which contain a
backported patch to correct this issue.
Red Hat would like to thank iDEFENSE for their responsible disclosure
of this issue."
);
# https://lists.centos.org/pipermail/centos-announce/2005-March/011507.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?6df721fa"
);
# https://lists.centos.org/pipermail/centos-announce/2005-March/011512.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?94af5e1a"
);
# https://lists.centos.org/pipermail/centos-announce/2005-March/011513.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?0153eac8"
);
script_set_attribute(attribute:"solution", value:"Update the affected krb5 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:centos:centos:krb5-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:krb5-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:krb5-server");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:krb5-workstation");
script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:3");
script_set_attribute(attribute:"vuln_publication_date", value:"2005/05/02");
script_set_attribute(attribute:"patch_publication_date", value:"2005/03/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/03");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2006-2021 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:"^3([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 3.x", "CentOS " + os_ver);
if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);
flag = 0;
if (rpm_check(release:"CentOS-3", reference:"krb5-devel-1.2.7-42")) flag++;
if (rpm_check(release:"CentOS-3", reference:"krb5-libs-1.2.7-42")) flag++;
if (rpm_check(release:"CentOS-3", reference:"krb5-server-1.2.7-42")) flag++;
if (rpm_check(release:"CentOS-3", reference:"krb5-workstation-1.2.7-42")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
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-devel / krb5-libs / krb5-server / krb5-workstation");
}
Vendor | Product | Version | CPE |
---|---|---|---|
centos | centos | krb5-devel | p-cpe:/a:centos:centos:krb5-devel |
centos | centos | krb5-libs | p-cpe:/a:centos:centos:krb5-libs |
centos | centos | krb5-server | p-cpe:/a:centos:centos:krb5-server |
centos | centos | krb5-workstation | p-cpe:/a:centos:centos:krb5-workstation |
centos | centos | 3 | cpe:/o:centos:centos:3 |