CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
Percentile
99.1%
The remote host is affected by the vulnerability described in GLSA-200504-04 (mit-krb5: Multiple buffer overflows in telnet client)
A buffer overflow has been identified in the env_opt_add() function, where a response requiring excessive escaping can cause a heap-based buffer overflow. Another issue has been identified in the slc_add_reply() function, where a large number of SLC commands can overflow a fixed size buffer.
Impact :
Successful exploitation would require a vulnerable user to connect to an attacker-controlled telnet host, potentially executing arbitrary code with the permissions of the telnet user on the client.
Workaround :
There is no known workaround at this time.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200504-04.
#
# The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(17978);
script_version("1.19");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2005-0468", "CVE-2005-0469");
script_xref(name:"GLSA", value:"200504-04");
script_name(english:"GLSA-200504-04 : mit-krb5: Multiple buffer overflows in telnet client");
script_summary(english:"Checks for updated package(s) in /var/db/pkg");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Gentoo host is missing one or more security-related
patches."
);
script_set_attribute(
attribute:"description",
value:
"The remote host is affected by the vulnerability described in GLSA-200504-04
(mit-krb5: Multiple buffer overflows in telnet client)
A buffer overflow has been identified in the env_opt_add()
function, where a response requiring excessive escaping can cause a
heap-based buffer overflow. Another issue has been identified in the
slc_add_reply() function, where a large number of SLC commands can
overflow a fixed size buffer.
Impact :
Successful exploitation would require a vulnerable user to connect
to an attacker-controlled telnet host, potentially executing arbitrary
code with the permissions of the telnet user on the client.
Workaround :
There is no known workaround at this time."
);
# http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2005-001-telnet.txt
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?bf1e4bc6"
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/200504-04"
);
script_set_attribute(
attribute:"solution",
value:
"All mit-krb5 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-crypt/mit-krb5-1.3.6-r2'"
);
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:gentoo:linux:mit-krb5");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2005/04/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2005/04/06");
script_set_attribute(attribute:"vuln_publication_date", value:"2005/03/28");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2005-2021 Tenable Network Security, Inc.");
script_family(english:"Gentoo Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("qpkg.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo");
if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (qpkg_check(package:"app-crypt/mit-krb5", unaffected:make_list("ge 1.3.6-r2"), vulnerable:make_list("lt 1.3.6-r2"))) flag++;
if (flag)
{
if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
else security_hole(0);
exit(0);
}
else
{
tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "mit-krb5");
}