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nessusThis script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2016-2280-1.NASL
HistorySep 13, 2016 - 12:00 a.m.

SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2016:2280-1)

2016-09-1300:00:00
This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
29

This update for openssh fixes the following issues :

  • Prevent user enumeration through the timing of password processing (bsc#989363, CVE-2016-6210) [-prevent_timing_user_enumeration]

  • Allow lowering the DH groups parameter limit in server as well as when GSSAPI key exchange is used (bsc#948902)

  • limit accepted password length (prevents possible DoS) (bsc#992533, CVE-2016-6515) Bug fixes :

  • avoid complaining about unset DISPLAY variable (bsc#981654)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2016:2280-1.
# The text itself is copyright (C) SUSE.
#

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

if (description)
{
  script_id(93455);
  script_version("2.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2016-6210", "CVE-2016-6515");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : openssh (SUSE-SU-2016:2280-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for openssh fixes the following issues :

  - Prevent user enumeration through the timing of password
    processing (bsc#989363, CVE-2016-6210)
    [-prevent_timing_user_enumeration]

  - Allow lowering the DH groups parameter limit in server
    as well as when GSSAPI key exchange is used (bsc#948902)

  - limit accepted password length (prevents possible DoS)
    (bsc#992533, CVE-2016-6515) Bug fixes :

  - avoid complaining about unset DISPLAY variable
    (bsc#981654)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=948902"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=981654"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=989363"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=992533"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-6210/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-6515/"
  );
  # https://www.suse.com/support/update/announcement/2016/suse-su-20162280-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?b9954ae3"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server for SAP 12:zypper in -t patch
SUSE-SLE-SAP-12-2016-1332=1

SUSE Linux Enterprise Server 12-SP1:zypper in -t patch
SUSE-SLE-SERVER-12-SP1-2016-1332=1

SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-2016-1332=1

SUSE Linux Enterprise Desktop 12-SP1:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP1-2016-1332=1

To bring your system up-to-date, use 'zypper patch'."
  );
  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:suse_linux:openssh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-askpass-gnome-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-fips");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:openssh-helpers-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/08/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 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/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0/1", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(1)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP1", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-askpass-gnome-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-askpass-gnome-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-debugsource-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-fips-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-helpers-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"openssh-helpers-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-askpass-gnome-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-askpass-gnome-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-debugsource-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-fips-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-helpers-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"openssh-helpers-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"openssh-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"openssh-askpass-gnome-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"openssh-askpass-gnome-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"openssh-debuginfo-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"openssh-debugsource-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"openssh-helpers-6.6p1-52.1")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"openssh-helpers-debuginfo-6.6p1-52.1")) 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");
}