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openvasCopyright (c) 2017 Greenbone Networks GmbH http://greenbone.netOPENVAS:703901
HistoryJul 02, 2017 - 12:00 a.m.

Debian Security Advisory DSA 3901-1 (libgcrypt20 - security update)

2017-07-0200:00:00
Copyright (c) 2017 Greenbone Networks GmbH http://greenbone.net
plugins.openvas.org
17

EPSS

0.004

Percentile

73.2%

Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot
Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal and
Yuval Yarom discovered that Libgcrypt is prone to a local side-channel
attack allowing full key recovery for RSA-1024.

See https://eprint.iacr.org/2017/627
for details.

# OpenVAS Vulnerability Test
# $Id: deb_3901.nasl 6660 2017-07-10 14:25:06Z cfischer $
# Auto-generated from advisory DSA 3901-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2017 Greenbone Networks GmbH http://greenbone.net
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (c) the respective author(s)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#


if(description)
{
    script_id(703901);
    script_version("$Revision: 6660 $");
    script_cve_id("CVE-2017-7526");
    script_name("Debian Security Advisory DSA 3901-1 (libgcrypt20 - security update)");
    script_tag(name: "last_modification", value: "$Date: 2017-07-10 16:25:06 +0200 (Mon, 10 Jul 2017) $");
    script_tag(name: "creation_date", value: "2017-07-02 00:00:00 +0200 (Sun, 02 Jul 2017)");
    script_tag(name: "cvss_base", value: "10.0");
    script_tag(name: "cvss_base_vector", value: "AV:N/AC:L/Au:N/C:C/I:C/A:C");
    script_tag(name: "solution_type", value: "VendorFix");
    script_tag(name: "qod_type", value: "package");

    script_xref(name: "URL", value: "http://www.debian.org/security/2017/dsa-3901.html");

    script_category(ACT_GATHER_INFO);

    script_copyright("Copyright (c) 2017 Greenbone Networks GmbH http://greenbone.net");
    script_family("Debian Local Security Checks");
    script_dependencies("gather-package-list.nasl");
    script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages");
    script_tag(name: "affected",  value: "libgcrypt20 on Debian Linux");
        script_tag(name: "insight",   value: "libgcrypt contains cryptographic functions. Many important free
ciphers, hash algorithms and public key signing algorithms have been
implemented:");
    script_tag(name: "solution",  value: "For the oldstable distribution (jessie), this problem has been fixed
in version 1.6.3-2+deb8u4.

For the stable distribution (stretch), this problem has been fixed in
version 1.7.6-2+deb9u1.

For the testing distribution (buster), this problem has been fixed
in version 1.7.8-1.

For the unstable distribution (sid), this problem has been fixed in
version 1.7.8-1.

We recommend that you upgrade your libgcrypt20 packages.");
    script_tag(name: "summary",   value: "Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot
Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal and
Yuval Yarom discovered that Libgcrypt is prone to a local side-channel
attack allowing full key recovery for RSA-1024.

See https://eprint.iacr.org/2017/627 
for details.");
    script_tag(name: "vuldetect", value: "This check tests the installed software version using the apt package manager.");

    exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

res = "";
report = "";
if ((res = isdpkgvuln(pkg:"libgcrypt11-dev", ver:"1.6.3-2+deb8u4", rls_regex:"DEB8.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20", ver:"1.6.3-2+deb8u4", rls_regex:"DEB8.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-dbg", ver:"1.6.3-2+deb8u4", rls_regex:"DEB8.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-dev", ver:"1.6.3-2+deb8u4", rls_regex:"DEB8.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-doc", ver:"1.6.3-2+deb8u4", rls_regex:"DEB8.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt-mingw-w64-dev", ver:"1.7.6-2+deb9u1", rls_regex:"DEB9.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt11-dev", ver:"1.7.6-2+deb9u1", rls_regex:"DEB9.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20", ver:"1.7.6-2+deb9u1", rls_regex:"DEB9.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-dev", ver:"1.7.6-2+deb9u1", rls_regex:"DEB9.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-doc", ver:"1.7.6-2+deb9u1", rls_regex:"DEB9.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt-mingw-w64-dev", ver:"1.7.8-1", rls_regex:"DEB10.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt11-dev", ver:"1.7.8-1", rls_regex:"DEB10.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20", ver:"1.7.8-1", rls_regex:"DEB10.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-dev", ver:"1.7.8-1", rls_regex:"DEB10.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-doc", ver:"1.7.8-1", rls_regex:"DEB10.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libgcrypt20-udeb", ver:"1.7.8-1", rls_regex:"DEB10.[0-9]+", remove_arch:TRUE )) != NULL) {
    report += res;
}

if (report != "") {
    security_message(data:report);
} else if (__pkg_match) {
    exit(99); # Not vulnerable.
}