Mandriva Linux Security Advisory : stunnel (MDVSA-2015:096)

#%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-2015:096. 
# The text itself is copyright (C) Mandriva S.A.
#

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

if (description)
{
  script_id(82349);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2014-0016");
  script_xref(name:"MDVSA", value:"2015:096");

  script_name(english:"Mandriva Linux Security Advisory : stunnel (MDVSA-2015:096)");
  script_summary(english:"Checks rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Mandriva Linux host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Updated stunnel package fixes security vulnerability :

A flaw was found in the way stunnel, a socket wrapper which can
provide SSL support to ordinary applications, performed
(re)initialization of PRNG after fork. When accepting a new
connection, the server forks and the child process handles the
request. The RAND_bytes() function of openssl doesn't reset its state
after the fork, but seeds the PRNG with the output of time(NULL). The
most important consequence is that servers using EC (ECDSA) or DSA
certificates may under certain conditions leak their private key
(CVE-2014-0016).

The updated packages fix this issue by using threads instead of new
processes to handle connections.

Also an issue has been corrected where the directory for the pid file
was not being created when the package is installed.

An issue currently exists in Mageia 4 where it fails trying to use
FIPS SSL (mga#13124). This can be worked around by adding fips = no
into the config."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://advisories.mageia.org/MGASA-2014-0144.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected stunnel package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:stunnel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mandriva:business_server:2");

  script_set_attribute(attribute:"patch_publication_date", value:"2015/03/28");
  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:"stunnel-4.56-4.1.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");