Ubuntu 10.04 LTS / 11.04 : python3.1 vulnerabilities (USN-1616-1)

2012-10-25T00:00:00
ID UBUNTU_USN-1616-1.NASL
Type nessus
Reporter Tenable
Modified 2018-08-01T00:00:00

Description

It was discovered that Python would prepend an empty string to sys.path under certain circumstances. A local attacker with write access to the current working directory could exploit this to execute arbitrary code. This issue only affected Ubuntu 10.04 LTS. (CVE-2008-5983)

It was discovered that the audioop module did not correctly perform input validation. If a user or automated system were tricked into opening a crafted audio file, an attacker could cause a denial of service via application crash. These issues only affected Ubuntu 10.04 LTS. (CVE-2010-1634, CVE-2010-2089)

It was discovered that Python distutils contained a race condition when creating the ~/.pypirc file. A local attacker could exploit this to obtain sensitive information. (CVE-2011-4944)

It was discovered that SimpleXMLRPCServer did not properly validate its input when handling HTTP POST requests. A remote attacker could exploit this to cause a denial of service via excessive CPU utilization. (CVE-2012-0845)

It was discovered that Python was susceptible to hash algorithm attacks. An attacker could cause a denial of service under certian circumstances. This update adds the '-R' command line option and honors setting the PYTHONHASHSEED environment variable to 'random' to salt str and datetime objects with an unpredictable value. (CVE-2012-1150)

Serhiy Storchaka discovered that the UTF16 decoder in Python did not properly reset internal variables after error handling. An attacker could exploit this to cause a denial of service via memory corruption. (CVE-2012-2135).

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-1616-1. 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(62700);
  script_version("1.7");
  script_cvs_date("Date: 2018/08/01 17:36:14");

  script_cve_id("CVE-2008-5983", "CVE-2010-1634", "CVE-2010-2089", "CVE-2011-4944", "CVE-2012-0845", "CVE-2012-1150", "CVE-2012-2135");
  script_bugtraq_id(40370, 40862, 40863, 51239, 51996, 52732, 53244);
  script_xref(name:"USN", value:"1616-1");

  script_name(english:"Ubuntu 10.04 LTS / 11.04 : python3.1 vulnerabilities (USN-1616-1)");
  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:
"It was discovered that Python would prepend an empty string to
sys.path under certain circumstances. A local attacker with write
access to the current working directory could exploit this to execute
arbitrary code. This issue only affected Ubuntu 10.04 LTS.
(CVE-2008-5983)

It was discovered that the audioop module did not correctly perform
input validation. If a user or automated system were tricked into
opening a crafted audio file, an attacker could cause a denial of
service via application crash. These issues only affected Ubuntu 10.04
LTS. (CVE-2010-1634, CVE-2010-2089)

It was discovered that Python distutils contained a race condition
when creating the ~/.pypirc file. A local attacker could exploit this
to obtain sensitive information. (CVE-2011-4944)

It was discovered that SimpleXMLRPCServer did not properly validate
its input when handling HTTP POST requests. A remote attacker could
exploit this to cause a denial of service via excessive CPU
utilization. (CVE-2012-0845)

It was discovered that Python was susceptible to hash algorithm
attacks. An attacker could cause a denial of service under certian
circumstances. This update adds the '-R' command line option and
honors setting the PYTHONHASHSEED environment variable to 'random' to
salt str and datetime objects with an unpredictable value.
(CVE-2012-1150)

Serhiy Storchaka discovered that the UTF16 decoder in Python did not
properly reset internal variables after error handling. An attacker
could exploit this to cause a denial of service via memory corruption.
(CVE-2012-2135).

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 python3.1 and / or python3.1-minimal 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:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:python3.1-minimal");
  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:11.04");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/10/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/10/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2012-2018 Canonical, Inc. / NASL script (C) 2012-2016 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:"^(10\.04|11\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 11.04", "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:"10.04", pkgname:"python3.1", pkgver:"3.1.2-0ubuntu3.2")) flag++;
if (ubuntu_check(osver:"10.04", pkgname:"python3.1-minimal", pkgver:"3.1.2-0ubuntu3.2")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"python3.1", pkgver:"3.1.3-1ubuntu1.2")) flag++;
if (ubuntu_check(osver:"11.04", pkgname:"python3.1-minimal", pkgver:"3.1.3-1ubuntu1.2")) 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, "python3.1 / python3.1-minimal");
}