Mandriva Linux Security Advisory : ruby (MDVSA-2015:129)

#%NASL_MIN_LEVEL 70300

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Mandriva Linux Security Advisory MDVSA-2015:129. 
# The text itself is copyright (C) Mandriva S.A.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(82382);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2014-4975", "CVE-2014-8080", "CVE-2014-8090");
  script_xref(name:"MDVSA", value:"2015:129");

  script_name(english:"Mandriva Linux Security Advisory : ruby (MDVSA-2015:129)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Mandriva Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated ruby packages fix security vulnerabilities :

Due to unrestricted entity expansion, when reading text nodes from an
XML document, the REXML parser in Ruby can be coerced into allocating
extremely large string objects which can consume all of the memory on
a machine, causing a denial of service (CVE-2014-8080).

Will Wood discovered that Ruby incorrectly handled the encodes()
function. An attacker could possibly use this issue to cause Ruby to
crash, resulting in a denial of service, or possibly execute arbitrary
code. The default compiler options for affected releases should reduce
the vulnerability to a denial of service (CVE-2014-4975).

Due to an incomplete fix for CVE-2014-8080, 100% CPU utilization can
occur as a result of recursive expansion with an empty String. When
reading text nodes from an XML document, the REXML parser in Ruby can
be coerced into allocating extremely large string objects which can
consume all of the memory on a machine, causing a denial of service
(CVE-2014-8090)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://advisories.mageia.org/MGASA-2014-0443.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://advisories.mageia.org/MGASA-2014-0472.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:lib64ruby2.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ruby-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ruby-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ruby-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:mandriva:linux:ruby-tk");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:2");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/03/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/03/30");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2021 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:"MDK-MBS2", cpu:"x86_64", reference:"lib64ruby2.0-2.0.0.p598-1.mbs2")) flag++;
if (rpm_check(release:"MDK-MBS2", cpu:"x86_64", reference:"ruby-2.0.0.p598-1.mbs2")) flag++;
if (rpm_check(release:"MDK-MBS2", cpu:"x86_64", reference:"ruby-devel-2.0.0.p598-1.mbs2")) flag++;
if (rpm_check(release:"MDK-MBS2", reference:"ruby-doc-2.0.0.p598-1.mbs2")) flag++;
if (rpm_check(release:"MDK-MBS2", reference:"ruby-irb-2.0.0.p598-1.mbs2")) flag++;
if (rpm_check(release:"MDK-MBS2", cpu:"x86_64", reference:"ruby-tk-2.0.0.p598-1.mbs2")) 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");