Werner Koch reports :
There was a bug in the mixing functions of Libgcrypt’s random number generator: An attacker who obtains 4640 bits from the RNG can trivially predict the next 160 bits of output. This bug exists since 1998 in all GnuPG and Libgcrypt versions.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2019 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
# copyright notice, this list of conditions and the following
# disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
# published online in any format, converted to PDF, PostScript,
# RTF and other formats) must reproduce the above copyright
# notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
#
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(93023);
script_version("2.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id("CVE-2016-6313");
script_name(english:"FreeBSD : gnupg -- attacker who obtains 4640 bits from the RNG can trivially predict the next 160 bits of output (e1c71d8d-64d9-11e6-b38a-25a46b33f2ed)");
script_summary(english:"Checks for updated packages in pkg_info output");
script_set_attribute(
attribute:"synopsis",
value:
"The remote FreeBSD host is missing one or more security-related
updates."
);
script_set_attribute(
attribute:"description",
value:
"Werner Koch reports :
There was a bug in the mixing functions of Libgcrypt's random number
generator: An attacker who obtains 4640 bits from the RNG can
trivially predict the next 160 bits of output. This bug exists since
1998 in all GnuPG and Libgcrypt versions."
);
script_set_attribute(
attribute:"see_also",
value:"https://lists.gnupg.org/pipermail/gnupg-announce/2016q3/000395.html"
);
# https://vuxml.freebsd.org/freebsd/e1c71d8d-64d9-11e6-b38a-25a46b33f2ed.html
script_set_attribute(
attribute:"see_also",
value:"http://www.nessus.org/u?e31d624c"
);
script_set_attribute(attribute:"solution", value:"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:gnupg1");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:libgcrypt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-c6-libgcrypt");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:linux-c7-libgcrypt");
script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
script_set_attribute(attribute:"vuln_publication_date", value:"2016/08/17");
script_set_attribute(attribute:"patch_publication_date", value:"2016/08/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2016/08/18");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_family(english:"FreeBSD Local Security Checks");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");
exit(0);
}
include("audit.inc");
include("freebsd_package.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);
flag = 0;
if (pkg_test(save_report:TRUE, pkg:"gnupg1<1.4.21")) flag++;
if (pkg_test(save_report:TRUE, pkg:"libgcrypt<1.7.3")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-c6-libgcrypt<1.4.5_4")) flag++;
if (pkg_test(save_report:TRUE, pkg:"linux-c7-libgcrypt<1.5.3_1")) flag++;
if (flag)
{
if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
else security_warning(0);
exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
Vendor | Product | Version | CPE |
---|---|---|---|
freebsd | freebsd | gnupg1 | p-cpe:/a:freebsd:freebsd:gnupg1 |
freebsd | freebsd | libgcrypt | p-cpe:/a:freebsd:freebsd:libgcrypt |
freebsd | freebsd | linux-c6-libgcrypt | p-cpe:/a:freebsd:freebsd:linux-c6-libgcrypt |
freebsd | freebsd | linux-c7-libgcrypt | p-cpe:/a:freebsd:freebsd:linux-c7-libgcrypt |
freebsd | freebsd | cpe:/o:freebsd:freebsd |