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Amazon Linux AMI : python26 (ALAS-2012-80)

2013-09-04T00:00:00
ID ALA_ALAS-2012-80.NASL
Type nessus
Reporter This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.
Modified 2020-01-02T00:00:00

Description

SimpleXMLRPCServer.py in SimpleXMLRPCServer in Python before 2.6.8, 2.7.x before 2.7.3, 3.x before 3.1.5, and 3.2.x before 3.2.3 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via an XML-RPC POST request that contains a smaller amount of data than specified by the Content-Length header.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2012-80.
#

include("compat.inc");

if (description)
{
  script_id(69687);
  script_version("1.5");
  script_cvs_date("Date: 2018/04/18 15:09:34");

  script_cve_id("CVE-2012-0845");
  script_xref(name:"ALAS", value:"2012-80");

  script_name(english:"Amazon Linux AMI : python26 (ALAS-2012-80)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"SimpleXMLRPCServer.py in SimpleXMLRPCServer in Python before 2.6.8,
2.7.x before 2.7.3, 3.x before 3.1.5, and 3.2.x before 3.2.3 allows
remote attackers to cause a denial of service (infinite loop and CPU
consumption) via an XML-RPC POST request that contains a smaller
amount of data than specified by the Content-Length header."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2012-80.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Run 'yum update python26' to update your system."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python26");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python26-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python26-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python26-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python26-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python26-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/05/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/09/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

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


flag = 0;
if (rpm_check(release:"ALA", reference:"python26-2.6.8-1.45.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"python26-debuginfo-2.6.8-1.45.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"python26-devel-2.6.8-1.45.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"python26-libs-2.6.8-1.45.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"python26-test-2.6.8-1.45.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"python26-tools-2.6.8-1.45.amzn1")) 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, "python26 / python26-debuginfo / python26-devel / python26-libs / etc");
}
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