Vulnerabilities > CVE-2006-0049 - Unspecified vulnerability in GNU Privacy Guard

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# This plugin text was extracted from SuSE Security Advisory SUSE-SA:2006:014
#


if ( ! defined_func("bn_random") ) exit(0);

include("compat.inc");

if(description)
{
 script_id(21093);
 script_version ("1.8");
 
 name["english"] = "SUSE-SA:2006:014: gpg";
 
 script_name(english:name["english"]);
 
 script_set_attribute(attribute:"synopsis", value:
"The remote host is missing a vendor-supplied security patch" );
 script_set_attribute(attribute:"description", value:
"The remote host is missing the patch for the advisory SUSE-SA:2006:014 (gpg).


The GNU Privacy Guard (GPG) allows crafting a message which could
check out correct using '--verify', but would extract a different,
potentially malicious content when using '-o --batch'.

The reason for this is that a .gpg or .asc file can contain multiple
plain text and signature streams and the handling of these streams was
only possible when correctly following the gpg state.

The gpg '--verify' option has been changed to be way more strict than
before and fail on files with multiple signatures/blocks to mitigate
the problem of doing the common --verify checks and -o extraction.

This problem could be used by an attacker to remotely execute code
by using handcrafted YaST Online Patch files put onto a compromised
YOU mirror server and waiting for the user to run YOU.

This problem is tracked by the Mitre CVE ID CVE-2006-0049.

This is a different issue than the gpg signature checking problem for" );
 script_set_attribute(attribute:"solution", value:
"http://www.suse.de/security/advisories/2006_14_gpg.html" );
 script_set_attribute(attribute:"risk_factor", value:"High" );



 script_set_attribute(attribute:"plugin_publication_date", value: "2006/03/17");
 script_end_attributes();

 
 summary["english"] = "Check for the version of the gpg package";
 script_summary(english:summary["english"]);
 
 script_category(ACT_GATHER_INFO);
 
 script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
 family["english"] = "SuSE Local Security Checks";
 script_family(english:family["english"]);
 
 script_dependencies("ssh_get_info.nasl");
 script_require_keys("Host/SuSE/rpm-list");
 exit(0);
}

include("rpm.inc");
if ( rpm_check( reference:"gpg-1.4.2-5.4", release:"SUSE10.0") )
{
 security_hole(0);
 exit(0);
}
if ( rpm_check( reference:"gpg-1.2.4-68.13", release:"SUSE9.1") )
{
 security_hole(0);
 exit(0);
}
if ( rpm_check( reference:"gpg-1.2.5-3.6", release:"SUSE9.2") )
{
 security_hole(0);
 exit(0);
}
if ( rpm_check( reference:"gpg-1.4.0-4.4", release:"SUSE9.3") )
{
 security_hole(0);
 exit(0);
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 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("compat.inc");

if (description)
{
  script_id(21478);
  script_version("1.11");
  script_cvs_date("Date: 2019/08/02 13:32:38");

  script_cve_id("CVE-2006-0049");

  script_name(english:"FreeBSD : GnuPG does not detect injection of unsigned data (948921ad-afbc-11da-bad9-02e081235dab)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Werner Koch reports :

In the aftermath of the false positive signature verfication bug
(announced 2006-02-15) more thorough testing of the fix has been done
and another vulnerability has been detected. This new problem affects
the use of *gpg* for verification of signatures which are _not_
detached signatures. The problem also affects verification of
signatures embedded in encrypted messages; i.e. standard use of gpg
for mails."
  );
  # http://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000216.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000216.html"
  );
  # https://vuxml.freebsd.org/freebsd/948921ad-afbc-11da-bad9-02e081235dab.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?42743b0c"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/03/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/05/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 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:"gnupg<1.4.2.2")) 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");

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-264-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(21182);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:33:00");

  script_cve_id("CVE-2006-0049");
  script_xref(name:"USN", value:"264-1");

  script_name(english:"Ubuntu 4.10 / 5.04 / 5.10 : gnupg vulnerability (USN-264-1)");
  script_summary(english:"Checks dpkg output for updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Ubuntu host is missing a security-related patch."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Tavis Ormandy discovered a flaw in gnupg's signature verification. In
some cases, certain invalid signature formats could cause gpg to
report a 'good signature' result for auxiliary unsigned data which was
prepended or appended to the checked message part.

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:"solution", value:"Update the affected gnupg package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:4.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:5.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/04/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/04/04");
  script_set_attribute(attribute:"vuln_publication_date", value:"2006/03/09");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2006-2019 Canonical, Inc. / NASL script (C) 2006-2016 Tenable Network Security, Inc.");
  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:"^(4\.10|5\.04|5\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 4.10 / 5.04 / 5.10", "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:"4.10", pkgname:"gnupg", pkgver:"1.2.4-4ubuntu2.3")) flag++;
if (ubuntu_check(osver:"5.04", pkgname:"gnupg", pkgver:"1.2.5-3ubuntu5.3")) flag++;
if (ubuntu_check(osver:"5.10", pkgname:"gnupg", pkgver:"1.4.1-1ubuntu1.2")) 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, "gnupg");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2006:0266. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(21090);
  script_version ("1.22");
  script_cvs_date("Date: 2019/10/25 13:36:11");

  script_cve_id("CVE-2006-0049", "CVE-2006-0455");
  script_xref(name:"RHSA", value:"2006:0266");

  script_name(english:"RHEL 2.1 / 3 / 4 : gnupg (RHSA-2006:0266)");
  script_summary(english:"Checks the rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An updated GnuPG package that fixes signature verification flaws as
well as minor bugs is now available.

This update has been rated as having important security impact by the
Red Hat Security Response Team.

GnuPG is a utility for encrypting data and creating digital
signatures.

Tavis Ormandy discovered a bug in the way GnuPG verifies
cryptographically signed data with detached signatures. It is possible
for an attacker to construct a cryptographically signed message which
could appear to come from a third party. When a victim processes a
GnuPG message with a malformed detached signature, GnuPG ignores the
malformed signature, processes and outputs the signed data, and exits
with status 0, just as it would if the signature had been valid. In
this case, GnuPG's exit status would not indicate that no signature
verification had taken place. This issue would primarily be of concern
when processing GnuPG results via an automated script. The Common
Vulnerabilities and Exposures project assigned the name CVE-2006-0455
to this issue.

Tavis Ormandy also discovered a bug in the way GnuPG verifies
cryptographically signed data with inline signatures. It is possible
for an attacker to inject unsigned data into a signed message in such
a way that when a victim processes the message to recover the data,
the unsigned data is output along with the signed data, gaining the
appearance of having been signed. This issue is mitigated in the GnuPG
shipped with Red Hat Enterprise Linux as the --ignore-crc-error option
must be passed to the gpg executable for this attack to be successful.
The Common Vulnerabilities and Exposures project assigned the name
CVE-2006-0049 to this issue.

Please note that neither of these issues affect the way RPM or up2date
verify RPM package files, nor is RPM vulnerable to either of these
issues.

All users of GnuPG are advised to upgrade to this updated package,
which contains backported patches to correct these issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2006-0049"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2006-0455"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2006:0266"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected gnupg package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:2.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/03/16");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^(2\.1|3|4)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 2.1 / 3.x / 4.x", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) 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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2006:0266";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL2.1", cpu:"i386", reference:"gnupg-1.0.7-16")) flag++;

  if (rpm_check(release:"RHEL3", reference:"gnupg-1.2.1-15")) flag++;

  if (rpm_check(release:"RHEL4", reference:"gnupg-1.2.6-3")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gnupg");
  }
}

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-993. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(22859);
  script_version("1.13");
  script_cvs_date("Date: 2019/08/02 13:32:20");

  script_cve_id("CVE-2006-0049");
  script_xref(name:"DSA", value:"993");

  script_name(english:"Debian DSA-993-2 : gnupg - programming error");
  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:
"Tavis Ormandy noticed that gnupg, the GNU privacy guard - a free PGP
replacement, can be tricked to emit a 'good signature' status message
when a valid signature is included which does not belong to the data
packet. This update basically adds fixed packages for woody whose
version turned out to be vulnerable as well."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2006/dsa-993"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the gnupg package.

For the old stable distribution (woody) this problem has been fixed in
version 1.0.6-4woody5.

For the stable distribution (sarge) this problem has been fixed in
version 1.4.1-1.sarge3."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");

  script_set_attribute(attribute:"plugin_publication_date", value:"2006/10/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  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:"3.0", prefix:"gnupg", reference:"1.0.6-4woody5")) flag++;
if (deb_check(release:"3.1", prefix:"gnupg", reference:"1.4.1-1.sarge3")) 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");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 200603-08.
#
# The advisory text is Copyright (C) 2001-2018 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike 
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#

include("compat.inc");

if (description)
{
  script_id(21046);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:43");

  script_cve_id("CVE-2006-0049");
  script_xref(name:"GLSA", value:"200603-08");

  script_name(english:"GLSA-200603-08 : GnuPG: Incorrect signature verification");
  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-200603-08
(GnuPG: Incorrect signature verification)

    OpenPGP is the standard that defines the format of digital
    signatures supported by GnuPG. OpenPGP signatures consist of multiple
    sections, in a strictly defined order. Tavis Ormandy of the Gentoo
    Linux Security Audit Team discovered that certain illegal signature
    formats could allow signed data to be modified without detection. GnuPG
    has previously attempted to be lenient when processing malformed or
    legacy signature formats, but this has now been found to be insecure.
  
Impact :

    A remote attacker may be able to construct or modify a
    digitally-signed message, potentially allowing them to bypass
    authentication systems, or impersonate another user.
  
Workaround :

    There is no known workaround at this time."
  );
  # http://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000216.html
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000216.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/200603-08"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All GnuPG users should upgrade to the latest version:
    # emerge --sync
    # emerge --ask --oneshot --verbose '>=app-crypt/gnupg-1.4.2.2'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/03/13");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 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-crypt/gnupg", unaffected:make_list("ge 1.4.2.2"), vulnerable:make_list("lt 1.4.2.2"))) 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, "GnuPG");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Slackware Security Advisory 2006-072-02. The text 
# itself is copyright (C) Slackware Linux, Inc.
#

include("compat.inc");

if (description)
{
  script_id(21075);
  script_version("1.14");
  script_cvs_date("Date: 2019/10/25 13:36:20");

  script_cve_id("CVE-2006-0049", "CVE-2006-0455");
  script_xref(name:"SSA", value:"2006-072-02");

  script_name(english:"Slackware 10.0 / 10.1 / 10.2 / 9.0 / 9.1 / current : gnupg (SSA:2006-072-02)");
  script_summary(english:"Checks for updated package in /var/log/packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Slackware host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"New GnuPG packages are available for Slackware 9.0, 9.1, 10.0, 10.1,
10.2, and -current to fix security issues."
  );
  # http://www.slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.476477
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?744a42b2"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected gnupg package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:slackware:slackware_linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:10.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:10.1");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:10.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:9.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:slackware:slackware_linux:9.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/03/14");
  script_set_attribute(attribute:"vuln_publication_date", value:"2006/02/15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  script_family(english:"Slackware Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Slackware/release", "Host/Slackware/packages");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("slackware.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Slackware/release")) audit(AUDIT_OS_NOT, "Slackware");
if (!get_kb_item("Host/Slackware/packages")) 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, "Slackware", cpu);


flag = 0;
if (slackware_check(osver:"9.0", pkgname:"gnupg", pkgver:"1.4.2.2", pkgarch:"i386", pkgnum:"1")) flag++;

if (slackware_check(osver:"9.1", pkgname:"gnupg", pkgver:"1.4.2.2", pkgarch:"i486", pkgnum:"1")) flag++;

if (slackware_check(osver:"10.0", pkgname:"gnupg", pkgver:"1.4.2.2", pkgarch:"i486", pkgnum:"1")) flag++;

if (slackware_check(osver:"10.1", pkgname:"gnupg", pkgver:"1.4.2.2", pkgarch:"i486", pkgnum:"1")) flag++;

if (slackware_check(osver:"10.2", pkgname:"gnupg", pkgver:"1.4.2.2", pkgarch:"i486", pkgnum:"1")) flag++;

if (slackware_check(osver:"current", pkgname:"gnupg", pkgver:"1.4.2.2", pkgarch:"i486", pkgnum:"1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:slackware_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandrake Linux Security Advisory MDKSA-2006:055. 
# The text itself is copyright (C) Mandriva S.A.
#

include("compat.inc");

if (description)
{
  script_id(21098);
  script_version ("1.13");
  script_cvs_date("Date: 2019/08/02 13:32:48");

  script_cve_id("CVE-2006-0049");
  script_xref(name:"MDKSA", value:"2006:055");

  script_name(english:"Mandrake Linux Security Advisory : gnupg (MDKSA-2006:055)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandrake Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Another vulnerability, different from that fixed in MDKSA-2006:043
(CVE-2006-0455), was discovered in gnupg in the handling of signature
files.

This vulnerability is corrected in gnupg 1.4.2.2 which is being
provided with this update."
  );
  script_set_attribute(attribute:"solution", value:"Update the affected gnupg package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:linux:2006");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:mandrakesoft:mandrake_linux:le2005");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/03/18");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  script_family(english:"Mandriva Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/Mandrake/release", "Host/Mandrake/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Mandrake/release")) audit(AUDIT_OS_NOT, "Mandriva / Mandake Linux");
if (!get_kb_item("Host/Mandrake/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^(amd64|i[3-6]86|x86_64)$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Mandriva / Mandrake Linux", cpu);


flag = 0;
if (rpm_check(release:"MDK10.2", reference:"gnupg-1.4.2.2-0.1.102mdk", yank:"mdk")) flag++;

if (rpm_check(release:"MDK2006.0", reference:"gnupg-1.4.2.2-0.1.20060mdk", yank:"mdk")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory 2006-147.
#

include("compat.inc");

if (description)
{
  script_id(21076);
  script_version ("1.13");
  script_cvs_date("Date: 2019/08/02 13:32:24");

  script_cve_id("CVE-2006-0049");
  script_xref(name:"FEDORA", value:"2006-147");

  script_name(english:"Fedora Core 4 : gnupg-1.4.2.2-1 (2006-147)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora Core host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Tavis Ormandy discovered a flaw in the way GnuPG verifies
cryptographically signed data with inline signatures. It is possible
for an attacker to add unsigned text to a signed message in such a way
so that when the signed text is extracted, the unsigned text is
extracted as well, appearing as if it had been signed. The Common
Vulnerabilities and Exposures project assigned the name CVE-2006-0049
to this issue.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  # https://lists.fedoraproject.org/pipermail/announce/2006-March/001867.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?a41b7f99"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected gnupg and / or gnupg-debuginfo packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:gnupg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:gnupg-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora_core:4");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/03/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 Tenable Network Security, Inc.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! ereg(pattern:"^4([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 4.x", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) 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, "Fedora", cpu);

flag = 0;
if (rpm_check(release:"FC4", reference:"gnupg-1.4.2.2-1")) flag++;
if (rpm_check(release:"FC4", reference:"gnupg-debuginfo-1.4.2.2-1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gnupg / gnupg-debuginfo");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2006:0266 and 
# CentOS Errata and Security Advisory 2006:0266 respectively.
#

include("compat.inc");

if (description)
{
  script_id(21990);
  script_version("1.16");
  script_cvs_date("Date: 2019/10/25 13:36:03");

  script_cve_id("CVE-2006-0049", "CVE-2006-0455");
  script_xref(name:"RHSA", value:"2006:0266");

  script_name(english:"CentOS 3 / 4 : gnu / gnupg (CESA-2006:0266)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote CentOS host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"An updated GnuPG package that fixes signature verification flaws as
well as minor bugs is now available.

This update has been rated as having important security impact by the
Red Hat Security Response Team.

GnuPG is a utility for encrypting data and creating digital
signatures.

Tavis Ormandy discovered a bug in the way GnuPG verifies
cryptographically signed data with detached signatures. It is possible
for an attacker to construct a cryptographically signed message which
could appear to come from a third party. When a victim processes a
GnuPG message with a malformed detached signature, GnuPG ignores the
malformed signature, processes and outputs the signed data, and exits
with status 0, just as it would if the signature had been valid. In
this case, GnuPG's exit status would not indicate that no signature
verification had taken place. This issue would primarily be of concern
when processing GnuPG results via an automated script. The Common
Vulnerabilities and Exposures project assigned the name CVE-2006-0455
to this issue.

Tavis Ormandy also discovered a bug in the way GnuPG verifies
cryptographically signed data with inline signatures. It is possible
for an attacker to inject unsigned data into a signed message in such
a way that when a victim processes the message to recover the data,
the unsigned data is output along with the signed data, gaining the
appearance of having been signed. This issue is mitigated in the GnuPG
shipped with Red Hat Enterprise Linux as the --ignore-crc-error option
must be passed to the gpg executable for this attack to be successful.
The Common Vulnerabilities and Exposures project assigned the name
CVE-2006-0049 to this issue.

Please note that neither of these issues affect the way RPM or up2date
verify RPM package files, nor is RPM vulnerable to either of these
issues.

All users of GnuPG are advised to upgrade to this updated package,
which contains backported patches to correct these issues."
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012748.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?f185875d"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012749.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?70960352"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012750.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?25970934"
  );
  # https://lists.centos.org/pipermail/centos-announce/2006-March/012753.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?48ece257"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected gnu and / or gnupg packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:gnupg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:4");

  script_set_attribute(attribute:"vuln_publication_date", value:"2006/02/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2006/03/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/07/05");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"CentOS Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/CentOS/release", "Host/CentOS/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/CentOS/release");
if (isnull(release) || "CentOS" >!< release) audit(AUDIT_OS_NOT, "CentOS");
os_ver = pregmatch(pattern: "CentOS(?: Linux)? release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "CentOS");
os_ver = os_ver[1];
if (! preg(pattern:"^(3|4)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "CentOS 3.x / 4.x", "CentOS " + os_ver);

if (!get_kb_item("Host/CentOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);


cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "CentOS", cpu);


flag = 0;
if (rpm_check(release:"CentOS-3", cpu:"ia64", reference:"gnupg-1.2.1-15")) flag++;

if (rpm_check(release:"CentOS-4", reference:"gnupg-1.2.6-3")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gnupg");
}