SUSE SLED12 / SLES12 Security Update : strongswan (SUSE-SU-2015:0281-1)

2015-05-20T00:00:00
ID SUSE_SU-2015-0281-1.NASL
Type nessus
Reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-04-02T00:00:00

Description

This strongswan update fixes the following security and non security issues.

  • Disallow brainpool elliptic curve groups in fips mode (bnc#856322).

  • Applied an upstream fix for a denial-of-service vulnerability, which can be triggered by an IKEv2 Key Exchange payload, that contains the Diffie-Hellman group 1025 (bsc#910491,CVE-2014-9221).

  • Adjusted whilelist of approved algorithms in fips mode (bsc#856322).

  • Updated strongswan-hmac package description (bsc#856322).

  • Disabled explicit gpg validation; osc source_validator does it.

  • Guarded fipscheck and hmac package in the spec file for >13.1.

  • Added generation of fips hmac hash files using fipshmac utility and a _fipscheck script to verify binaries/libraries/plugings shipped in the strongswan-hmac package. With enabled fips in the kernel, the ipsec script will call it before any action or in a enforced/manual

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2015:0281-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(83680);
  script_version("2.9");
  script_cvs_date("Date: 2019/09/11 11:22:11");

  script_cve_id("CVE-2014-9221");
  script_bugtraq_id(71894);

  script_name(english:"SUSE SLED12 / SLES12 Security Update : strongswan (SUSE-SU-2015:0281-1)");
  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 strongswan update fixes the following security and non security
issues.

  - Disallow brainpool elliptic curve groups in fips mode
    (bnc#856322).

  - Applied an upstream fix for a denial-of-service
    vulnerability, which can be triggered by an IKEv2 Key
    Exchange payload, that contains the Diffie-Hellman group
    1025 (bsc#910491,CVE-2014-9221).

  - Adjusted whilelist of approved algorithms in fips mode
    (bsc#856322).

  - Updated strongswan-hmac package description
    (bsc#856322).

  - Disabled explicit gpg validation; osc source_validator
    does it.

  - Guarded fipscheck and hmac package in the spec file for
    >13.1.

  - Added generation of fips hmac hash files using fipshmac
    utility and a _fipscheck script to verify
    binaries/libraries/plugings shipped in the
    strongswan-hmac package. With enabled fips in the
    kernel, the ipsec script will call it before any action
    or in a enforced/manual 'ipsec _fipscheck' call. Added
    config file to load openssl and kernel af-alg plugins,
    but not all the other modules which provide
    further/alternative algs. Applied a filter disallowing
    non-approved algorithms in fips mode.
    (fate#316931,bnc#856322).

  - Fixed file list in the optional (disabled)
    strongswan-test package.

  - Fixed build of the strongswan built-in integrity
    checksum library and enabled building it only on
    architectures tested to work.

  - Fix to use bug number 897048 instead 856322 in last
    changes entry.

  - Applied an upstream patch reverting to store algorithms
    in the registration order again as ordering them by
    identifier caused weaker algorithms to be proposed first
    by default (bsc#897512).

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=856322"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=897048"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=897512"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=910491"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2014-9221/"
  );
  # https://www.suse.com/support/update/announcement/2015/suse-su-20150281-1.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?d73f3412"
  );
  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 12 :

zypper in -t patch SUSE-SLE-SERVER-12-2015-71=1

SUSE Linux Enterprise Desktop 12 :

zypper in -t patch SUSE-SLE-DESKTOP-12-2015-71=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:P");
  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_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:strongswan");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:strongswan-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:strongswan-hmac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:strongswan-ipsec");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:strongswan-ipsec-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:strongswan-libs0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:strongswan-libs0-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/01/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/01/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/05/20");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2019 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/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)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP0", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"0", reference:"strongswan-5.1.3-9.2")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"strongswan-debugsource-5.1.3-9.2")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"strongswan-hmac-5.1.3-9.2")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"strongswan-ipsec-5.1.3-9.2")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"strongswan-ipsec-debuginfo-5.1.3-9.2")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"strongswan-libs0-5.1.3-9.2")) flag++;
if (rpm_check(release:"SLES12", sp:"0", reference:"strongswan-libs0-debuginfo-5.1.3-9.2")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"strongswan-5.1.3-9.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"strongswan-debugsource-5.1.3-9.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"strongswan-ipsec-5.1.3-9.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"strongswan-ipsec-debuginfo-5.1.3-9.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"strongswan-libs0-5.1.3-9.1")) flag++;
if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"strongswan-libs0-debuginfo-5.1.3-9.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "strongswan");
}