DenyHosts: Denial of Service vulnerability in SSH authentication logs parsin
Reporter | Title | Published | Views | Family All 22 |
---|---|---|---|---|
![]() | CVE-2013-6890 | 23 Dec 201322:00 | – | cvelist |
![]() | Debian DSA-2826-1 : denyhosts - remote denial of ssh service | 23 Dec 201300:00 | – | nessus |
![]() | Fedora 19 : denyhosts-2.6-28.fc19.1 (2014-17081) | 6 Jan 201500:00 | – | nessus |
![]() | Fedora 20 : denyhosts-2.6-29.fc20.1 (2014-17067) | 6 Jan 201500:00 | – | nessus |
![]() | denyhosts DoS | 24 Dec 201300:00 | – | securityvulns |
![]() | [SECURITY] [DSA 2826-1] denyhosts security update | 24 Dec 201300:00 | – | securityvulns |
![]() | Gentoo Security Advisory GLSA 201406-23 | 29 Sep 201500:00 | – | openvas |
![]() | Fedora Update for denyhosts FEDORA-2014-17067 | 5 Jan 201500:00 | – | openvas |
![]() | Mageia: Security Advisory (MGASA-2014-0080) | 28 Jan 202200:00 | – | openvas |
![]() | Debian Security Advisory DSA 2826-1 (denyhosts - Remote denial of ssh service) | 22 Dec 201300:00 | – | openvas |
Source | Link |
---|---|
security | www.security.gentoo.org/glsa/201406-23 |
cve | www.cve.mitre.org/cgi-bin/cvename.cgi |
#%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 201406-23.
#
# 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(76225);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");
script_cve_id("CVE-2013-6890");
script_bugtraq_id(64478);
script_xref(name:"GLSA", value:"201406-23");
script_name(english:"GLSA-201406-23 : DenyHosts: Denial of Service");
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-201406-23
(DenyHosts: Denial of Service)
DenyHosts does not properly define the regular expressions used when
parsing SSH authentication logs.
Impact :
A remote attacker could possibly cause a Denial of Service condition via
a crafted login name.
Workaround :
There is no known workaround at this time."
);
script_set_attribute(
attribute:"see_also",
value:"https://security.gentoo.org/glsa/201406-23"
);
script_set_attribute(
attribute:"solution",
value:
"All DenyHost users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=app-admin/denyhosts-2.6-r9'"
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:denyhosts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"patch_publication_date", value:"2014/06/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/26");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2014-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
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-admin/denyhosts", unaffected:make_list("ge 2.6-r9"), vulnerable:make_list("lt 2.6-r9"))) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:qpkg_report_get());
else security_warning(0);
exit(0);
}
else
{
tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "DenyHosts");
}
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