Vulnerabilities > CVE-2008-4770 - Improper Input Validation vulnerability in Realvnc

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-1716. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(35567);
  script_version("1.12");
  script_cvs_date("Date: 2019/08/02 13:32:21");

  script_cve_id("CVE-2008-4770");
  script_bugtraq_id(33263);
  script_xref(name:"DSA", value:"1716");

  script_name(english:"Debian DSA-1716-1 : vnc4 - integer overflow");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that xvnc4viewer, a virtual network computing client
software for X, is prone to an integer overflow via a malicious
encoding value that could lead to arbitrary code execution."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=513531"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2009/dsa-1716"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the vnc4 packages.

For the stable distribution (etch) this problem has been fixed in
version 4.1.1+X4.3.0-21+etch1.

For the unstable (sid) distribution this problem has been fixed in
version 4.1.1+X4.3.0-31.

For the testing (lenny) distribution this problem will be fixed soon."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:vnc4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:4.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/01/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/02/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"4.0", prefix:"vnc4-common", reference:"4.1.1+X4.3.0-21+etch1")) flag++;
if (deb_check(release:"4.0", prefix:"vnc4server", reference:"4.1.1+X4.3.0-21+etch1")) flag++;
if (deb_check(release:"4.0", prefix:"xvnc4viewer", reference:"4.1.1+X4.3.0-21+etch1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Red Hat Security Advisory RHSA-2009:0261 and 
# Oracle Linux Security Advisory ELSA-2009-0261 respectively.
#

include("compat.inc");

if (description)
{
  script_id(67799);
  script_version("1.7");
  script_cvs_date("Date: 2019/10/25 13:36:07");

  script_cve_id("CVE-2008-4770");
  script_bugtraq_id(33263);
  script_xref(name:"RHSA", value:"2009:0261");

  script_name(english:"Oracle Linux 3 / 4 / 5 : vnc (ELSA-2009-0261)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Oracle Linux host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"From Red Hat Security Advisory 2009:0261 :

Updated vnc packages to correct a security issue are now available for
Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having moderate security impact by the
Red Hat Security Response Team.

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.

An insufficient input validation flaw was discovered in the VNC client
application, vncviewer. If an attacker could convince a victim to
connect to a malicious VNC server, or when an attacker was able to
connect to vncviewer running in the 'listen' mode, the attacker could
cause the victim's vncviewer to crash or, possibly, execute arbitrary
code. (CVE-2008-4770)

Users of vncviewer should upgrade to these updated packages, which
contain a backported patch to resolve this issue. For the update to
take effect, all running instances of vncviewer must be restarted
after the update is installed."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2009-February/000889.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2009-February/000890.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://oss.oracle.com/pipermail/el-errata/2009-February/000892.html"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected vnc packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:vnc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:linux:vnc-server");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:4");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:linux:5");

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/01/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2009/02/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/07/12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Oracle Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/OracleLinux", "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);
if (!get_kb_item("Host/OracleLinux")) audit(AUDIT_OS_NOT, "Oracle Linux");
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || !pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux)", string:release)) audit(AUDIT_OS_NOT, "Oracle Linux");
os_ver = pregmatch(pattern: "Oracle (?:Linux Server|Enterprise Linux) .*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Oracle Linux");
os_ver = os_ver[1];
if (! preg(pattern:"^(3|4|5)([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Oracle Linux 3 / 4 / 5", "Oracle Linux " + os_ver);

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 ("x86_64" >!< cpu && "ia64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Oracle Linux", cpu);

flag = 0;
if (rpm_check(release:"EL3", cpu:"i386", reference:"vnc-4.0-0.beta4.1.8")) flag++;
if (rpm_check(release:"EL3", cpu:"x86_64", reference:"vnc-4.0-0.beta4.1.8")) flag++;
if (rpm_check(release:"EL3", cpu:"i386", reference:"vnc-server-4.0-0.beta4.1.8")) flag++;
if (rpm_check(release:"EL3", cpu:"x86_64", reference:"vnc-server-4.0-0.beta4.1.8")) flag++;

if (rpm_check(release:"EL4", reference:"vnc-4.0-12.el4_7.1")) flag++;
if (rpm_check(release:"EL4", reference:"vnc-server-4.0-12.el4_7.1")) flag++;

if (rpm_check(release:"EL5", reference:"vnc-4.1.2-14.el5_3.1")) flag++;
if (rpm_check(release:"EL5", reference:"vnc-server-4.1.2-14.el5_3.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "vnc / vnc-server");
}

#%NASL_MIN_LEVEL 80502
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text in this plugin was
# extracted from the Oracle SunOS Patch Updates.
#
include("compat.inc");

if (description)
{
  script_id(107523);
  script_version("1.4");
  script_cvs_date("Date: 2019/10/25 13:36:25");

  script_cve_id("CVE-2008-4770");

  script_name(english:"Solaris 10 (sparc) : 140455-01");
  script_summary(english:"Check for patch 140455-01");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote host is missing Sun Security Patch number 140455-01"
  );
  script_set_attribute(
    attribute:"description", 
    value:
"X11 6.6.2: VNC Viewer patch.
Date this patch was last updated by Sun : Jan/05/09"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://getupdates.oracle.com/readme/140455-01"
  );
  script_set_attribute(attribute:"solution", value:"Install patch 140455-01");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cwe_id(20);

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:solaris:10:140455");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:solaris:10");

  script_set_attribute(attribute:"patch_publication_date", value:"2009/01/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Solaris Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Solaris/showrev");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("solaris.inc");

showrev = get_kb_item("Host/Solaris/showrev");
if (empty_or_null(showrev)) audit(AUDIT_OS_NOT, "Solaris");
os_ver = pregmatch(pattern:"Release: (\d+.(\d+))", string:showrev);
if (empty_or_null(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Solaris");
full_ver = os_ver[1];
os_level = os_ver[2];
if (full_ver != "5.10") audit(AUDIT_OS_NOT, "Solaris 10", "Solaris " + os_level);
package_arch = pregmatch(pattern:"Application architecture: (\w+)", string:showrev);
if (empty_or_null(package_arch)) audit(AUDIT_UNKNOWN_ARCH);
package_arch = package_arch[1];
if (package_arch != "sparc") audit(AUDIT_ARCH_NOT, "sparc", package_arch);
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

if (solaris_check_patch(release:"5.10", arch:"sparc", patch:"140455-01", obsoleted_by:"", package:"SUNWvncviewer", version:"6.6.2.0500,REV=0.2007.11.20") < 0) flag++;

if (flag) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : solaris_get_report()
  );
} else {
  patch_fix = solaris_patch_fix_get();
  if (!empty_or_null(patch_fix)) audit(AUDIT_PATCH_INSTALLED, patch_fix, "Solaris 10");
  tested = solaris_pkg_tests_get();
  if (!empty_or_null(tested)) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  audit(AUDIT_PACKAGE_NOT_INSTALLED, "SUNWvncviewer");
}