openSUSE Security Update : openssh (openSUSE-2017-339)

2017-03-14T00:00:00
ID OPENSUSE-2017-339.NASL
Type nessus
Reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-02-02T00:00:00

Description

This update for openssh fixes the following issues :

  • CVE-2016-8858: prevent resource depletion during key exchange (bsc#1005480)

  • CVE-2016-10009: limit directories for loading PKCS11 modules to avoid privilege escalation (bsc#1016366)

  • CVE-2016-10011: Prevent possible leaks of host private keys to low-privilege process handling authentication (bsc#1016369)

  • Fix suggested command for removing conflicting server keys from the known_hosts file (bsc#1006221)

  • Properly verify CIDR masks in the AllowUsers and DenyUsers configuration lists (bsc#1005893)

This update was imported from the SUSE:SLE-12:Update update project.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2017-339.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(97716);
  script_version("3.2");
  script_cvs_date("Date: 2019/04/10 16:10:18");

  script_cve_id("CVE-2016-10009", "CVE-2016-10011", "CVE-2016-8858");

  script_name(english:"openSUSE Security Update : openssh (openSUSE-2017-339)");
  script_summary(english:"Check for the openSUSE-2017-339 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for openssh fixes the following issues :

  - CVE-2016-8858: prevent resource depletion during key
    exchange (bsc#1005480)

  - CVE-2016-10009: limit directories for loading PKCS11
    modules to avoid privilege escalation (bsc#1016366)

  - CVE-2016-10011: Prevent possible leaks of host private
    keys to low-privilege process handling authentication
    (bsc#1016369)

  - Fix suggested command for removing conflicting server
    keys from the known_hosts file (bsc#1006221)

  - Properly verify CIDR masks in the AllowUsers and
    DenyUsers configuration lists (bsc#1005893)

This update was imported from the SUSE:SLE-12:Update update project."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1005480"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1005893"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1006221"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1016366"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1016369"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected openssh packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-askpass-gnome-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-cavs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-cavs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-fips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-helpers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:openssh-helpers-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/03/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/03/14");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu");

  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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE42\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE42.1", reference:"openssh-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-askpass-gnome-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-askpass-gnome-debuginfo-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-cavs-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-cavs-debuginfo-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-debuginfo-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-debugsource-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-fips-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-helpers-6.6p1-17.1") ) flag++;
if ( rpm_check(release:"SUSE42.1", reference:"openssh-helpers-debuginfo-6.6p1-17.1") ) 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, "openssh-askpass-gnome / openssh-askpass-gnome-debuginfo / openssh / etc");
}