Scientific Linux Security Update : tigervnc on SL6.x i386/x86_64

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text is (C) Scientific Linux.
#

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

if (description)
{
  script_id(61069);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2011-1775");

  script_name(english:"Scientific Linux Security Update : tigervnc on SL6.x i386/x86_64");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Scientific Linux host is missing one or more security
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Virtual Network Computing (VNC) is a remote display system which
allows you to view a computer's desktop environment not only on the
machine where it is running, but from anywhere on the Internet and
from a wide variety of machine architectures. TigerVNC is a suite of
VNC servers and clients.

It was discovered that vncviewer could prompt for and send
authentication credentials to a remote server without first properly
validating the server's X.509 certificate. As vncviewer did not
indicate that the certificate was bad or missing, a man-in-the-middle
attacker could use this flaw to trick a vncviewer client into
connecting to a spoofed VNC server, allowing the attacker to obtain
the client's credentials. (CVE-2011-1775)

All tigervnc users should upgrade to these updated packages, which
contain a backported patch to correct this issue."
  );
  # https://listserv.fnal.gov/scripts/wa.exe?A2=ind1106&L=scientific-linux-errata&T=0&P=3771
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ac6d3366"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/o:fermilab:scientific_linux");

  script_set_attribute(attribute:"patch_publication_date", value:"2011/06/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/01");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2012-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Scientific Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
if (isnull(release) || "Scientific Linux " >!< release) audit(AUDIT_HOST_NOT, "running Scientific Linux");
if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu >!< "x86_64" && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Scientific Linux", cpu);


flag = 0;
if (rpm_check(release:"SL6", reference:"tigervnc-1.0.90-0.15.20110314svn4359.el6_1.1")) flag++;
if (rpm_check(release:"SL6", reference:"tigervnc-debuginfo-1.0.90-0.15.20110314svn4359.el6_1.1")) flag++;
if (rpm_check(release:"SL6", reference:"tigervnc-server-1.0.90-0.15.20110314svn4359.el6_1.1")) flag++;
if (rpm_check(release:"SL6", reference:"tigervnc-server-module-1.0.90-0.15.20110314svn4359.el6_1.1")) 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");