CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:P/A:P
EPSS
Percentile
81.2%
It was discovered that NTP did not properly perform signature verification. A remote attacker could exploit this to bypass certificate validation via a malformed SSL/TLS signature.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-705-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(37876);
script_version("1.14");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");
script_cve_id("CVE-2008-5077", "CVE-2009-0021", "CVE-2009-0046", "CVE-2009-0047", "CVE-2009-0048", "CVE-2009-0049", "CVE-2009-0124", "CVE-2009-0125", "CVE-2009-0127", "CVE-2009-0128", "CVE-2009-0130");
script_xref(name:"USN", value:"705-1");
script_name(english:"Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : ntp vulnerability (USN-705-1)");
script_summary(english:"Checks dpkg output for updated packages.");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Ubuntu host is missing one or more security-related
patches."
);
script_set_attribute(
attribute:"description",
value:
"It was discovered that NTP did not properly perform signature
verification. A remote attacker could exploit this to bypass
certificate validation via a malformed SSL/TLS signature.
Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
);
script_set_attribute(
attribute:"see_also",
value:"https://usn.ubuntu.com/705-1/"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P");
script_cwe_id(20, 287);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-refclock");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-server");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntp-simple");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:ntpdate");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.06:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:7.10");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.10");
script_set_attribute(attribute:"patch_publication_date", value:"2009/01/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2009/04/23");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Ubuntu Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("ubuntu.inc");
include("misc_func.inc");
if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! ereg(pattern:"^(6\.06|7\.10|8\.04|8\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.06 / 7.10 / 8.04 / 8.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);
flag = 0;
if (ubuntu_check(osver:"6.06", pkgname:"ntp", pkgver:"4.2.0a+stable-8.1ubuntu6.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-doc", pkgver:"4.2.0a+stable-8.1ubuntu6.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-refclock", pkgver:"1:4.2.0a+stable-8.1ubuntu6.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-server", pkgver:"4.2.0a+stable-8.1ubuntu6.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntp-simple", pkgver:"1:4.2.0a+stable-8.1ubuntu6.1")) flag++;
if (ubuntu_check(osver:"6.06", pkgname:"ntpdate", pkgver:"4.2.0a+stable-8.1ubuntu6.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ntp", pkgver:"1:4.2.4p0+dfsg-1ubuntu2.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ntp-doc", pkgver:"4.2.4p0+dfsg-1ubuntu2.1")) flag++;
if (ubuntu_check(osver:"7.10", pkgname:"ntpdate", pkgver:"4.2.4p0+dfsg-1ubuntu2.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"ntp", pkgver:"1:4.2.4p4+dfsg-3ubuntu2.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"ntp-doc", pkgver:"4.2.4p4+dfsg-3ubuntu2.1")) flag++;
if (ubuntu_check(osver:"8.04", pkgname:"ntpdate", pkgver:"4.2.4p4+dfsg-3ubuntu2.1")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"ntp", pkgver:"1:4.2.4p4+dfsg-6ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"ntp-doc", pkgver:"4.2.4p4+dfsg-6ubuntu2.2")) flag++;
if (ubuntu_check(osver:"8.10", pkgname:"ntpdate", pkgver:"4.2.4p4+dfsg-6ubuntu2.2")) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ntp / ntp-doc / ntp-refclock / ntp-server / ntp-simple / ntpdate");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5077
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0021
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0046
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0047
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0048
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0049
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0124
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0125
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0127
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0128
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0130
usn.ubuntu.com/705-1/