Lucene search

K
nessusUbuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.UBUNTU_USN-1094-1.NASL
HistoryMar 30, 2011 - 12:00 a.m.

Ubuntu 9.10 / 10.04 LTS / 10.10 : libvirt vulnerability (USN-1094-1)

2011-03-3000:00:00
Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
28

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS

0.075

Percentile

94.1%

Petr Matousek discovered that libvirt did not always honor read-only connections. An attacker who is authorized to connect to the libvirt daemon could exploit this to cause a denial of service via application crash.

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.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-1094-1. 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(53218);
  script_version("1.10");
  script_cvs_date("Date: 2019/09/19 12:54:26");

  script_cve_id("CVE-2011-1146");
  script_bugtraq_id(46820);
  script_xref(name:"USN", value:"1094-1");

  script_name(english:"Ubuntu 9.10 / 10.04 LTS / 10.10 : libvirt vulnerability (USN-1094-1)");
  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:
"Petr Matousek discovered that libvirt did not always honor read-only
connections. An attacker who is authorized to connect to the libvirt
daemon could exploit this to cause a denial of service via application
crash.

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/1094-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  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_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libvirt0-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python-libvirt");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:9.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2011/03/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/03/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/03/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 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 (! preg(pattern:"^(9\.10|10\.04|10\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 9.10 / 10.04 / 10.10", "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:"9.10", pkgname:"libvirt-bin", pkgver:"0.7.0-1ubuntu13.3")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"libvirt-dev", pkgver:"0.7.0-1ubuntu13.3")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"libvirt-doc", pkgver:"0.7.0-1ubuntu13.3")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"libvirt0", pkgver:"0.7.0-1ubuntu13.3")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"libvirt0-dbg", pkgver:"0.7.0-1ubuntu13.3")) flag++;
if (ubuntu_check(osver:"9.10", pkgname:"python-libvirt", pkgver:"0.7.0-1ubuntu13.3")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libvirt-bin", pkgver:"0.7.5-5ubuntu27.9")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libvirt-dev", pkgver:"0.7.5-5ubuntu27.9")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libvirt-doc", pkgver:"0.7.5-5ubuntu27.9")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libvirt0", pkgver:"0.7.5-5ubuntu27.9")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"libvirt0-dbg", pkgver:"0.7.5-5ubuntu27.9")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"python-libvirt", pkgver:"0.7.5-5ubuntu27.9")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libvirt", pkgver:"0.8.3-1ubuntu14.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libvirt-bin", pkgver:"0.8.3-1ubuntu14.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libvirt-dev", pkgver:"0.8.3-1ubuntu14.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libvirt-doc", pkgver:"0.8.3-1ubuntu14.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libvirt0", pkgver:"0.8.3-1ubuntu14.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"libvirt0-dbg", pkgver:"0.8.3-1ubuntu14.1")) flag++;
if (ubuntu_check(osver:"10.10", pkgname:"python-libvirt", pkgver:"0.8.3-1ubuntu14.1")) 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, "libvirt / libvirt-bin / libvirt-dev / libvirt-doc / libvirt0 / etc");
}

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS

0.075

Percentile

94.1%