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Ubuntu 6.10 : gnupg2 vulnerabilities (USN-393-2)

2007-11-10T00:00:00
ID UBUNTU_USN-393-2.NASL
Type nessus
Reporter Ubuntu Security Notice (C) 2007-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2007-11-10T00:00:00

Description

USN-389-1 and USN-393-1 fixed vulnerabilities in gnupg. This update provides the corresponding updates for gnupg2.

A buffer overflow was discovered in GnuPG. By tricking a user into running gpg interactively on a specially crafted message, an attacker could execute arbitrary code with the user's privileges. This vulnerability is not exposed when running gpg in batch mode. (CVE-2006-6169)

Tavis Ormandy discovered that gnupg was incorrectly using the stack. If a user were tricked into processing a specially crafted message, an attacker could execute arbitrary code with the user's privileges. (CVE-2006-6235).

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-393-2. 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(27979);
  script_version("1.14");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/19");

  script_cve_id("CVE-2006-6169", "CVE-2006-6235");
  script_bugtraq_id(21306, 21462);
  script_xref(name:"USN", value:"393-2");

  script_name(english:"Ubuntu 6.10 : gnupg2 vulnerabilities (USN-393-2)");
  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:
"USN-389-1 and USN-393-1 fixed vulnerabilities in gnupg. This update
provides the corresponding updates for gnupg2.

A buffer overflow was discovered in GnuPG. By tricking a user into
running gpg interactively on a specially crafted message, an attacker
could execute arbitrary code with the user's privileges. This
vulnerability is not exposed when running gpg in batch mode.
(CVE-2006-6169)

Tavis Ormandy discovered that gnupg was incorrectly using
the stack. If a user were tricked into processing a
specially crafted message, an attacker could execute
arbitrary code with the user's privileges. (CVE-2006-6235).

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/393-2/"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected gnupg-agent, gnupg2 and / or gpgsm packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/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_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gnupg-agent");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gnupg2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:gpgsm");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:6.10");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/12/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2007/11/10");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2007-2019 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\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 6.10", "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:"6.10", pkgname:"gnupg-agent", pkgver:"1.9.21-0ubuntu5.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"gnupg2", pkgver:"1.9.21-0ubuntu5.2")) flag++;
if (ubuntu_check(osver:"6.10", pkgname:"gpgsm", pkgver:"1.9.21-0ubuntu5.2")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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-agent / gnupg2 / gpgsm");
}
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