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 has been discovered that NTP, an implementation of the Network Time Protocol, does not properly check the result of an OpenSSL function for verifying cryptographic signatures, which may ultimately lead to the acceptance of unauthenticated time information. (Note that cryptographic authentication of time servers is often not enabled in the first place.)
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DSA-1702. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(35365);
script_version("1.17");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
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_bugtraq_id(33150);
script_xref(name:"DSA", value:"1702");
script_name(english:"Debian DSA-1702-1 : ntp - interpretation conflict");
script_summary(english:"Checks dpkg output for the updated package");
script_set_attribute(
attribute:"synopsis",
value:"The remote Debian host is missing a security-related update."
);
script_set_attribute(
attribute:"description",
value:
"It has been discovered that NTP, an implementation of the Network Time
Protocol, does not properly check the result of an OpenSSL function
for verifying cryptographic signatures, which may ultimately lead to
the acceptance of unauthenticated time information. (Note that
cryptographic authentication of time servers is often not enabled in
the first place.)"
);
script_set_attribute(
attribute:"see_also",
value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=511227"
);
script_set_attribute(
attribute:"see_also",
value:"https://www.debian.org/security/2009/dsa-1702"
);
script_set_attribute(
attribute:"solution",
value:
"Upgrade the ntp package.
For the stable distribution (etch), this problem has been fixed in
version 4.2.2.p4+dfsg-2etch1."
);
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_cwe_id(20, 287);
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ntp");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");
script_set_attribute(attribute:"patch_publication_date", value:"2009/01/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2009/01/14");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2009-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"Debian Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include("audit.inc");
include("debian_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (deb_check(release:"4.0", prefix:"ntp", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntp-doc", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntp-refclock", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntp-simple", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (deb_check(release:"4.0", prefix:"ntpdate", reference:"4.2.2.p4+dfsg-2etch1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
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
bugs.debian.org/cgi-bin/bugreport.cgi?bug=511227
www.debian.org/security/2009/dsa-1702