openSUSE Security Update : bash (openSUSE-SU-2014:1242-1) (Shellshock)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2014-564.
#
# The text description of this plugin is (C) SUSE LLC.
#

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

if (description)
{
  script_id(77967);
  script_version("1.21");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");

  script_cve_id(
    "CVE-2014-6271",
    "CVE-2014-7169",
    "CVE-2014-7186",
    "CVE-2014-7187"
  );
  script_xref(name:"IAVA", value:"2014-A-0142");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/07/28");
  script_xref(name:"CEA-ID", value:"CEA-2019-0240");

  script_name(english:"openSUSE Security Update : bash (openSUSE-SU-2014:1242-1) (Shellshock)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The command-line shell 'bash' evaluates environment variables, which
allows the injection of characters and might be used to access files
on the system in some circumstances (CVE-2014-7169).

Please note that this issue is different from a previously fixed
vulnerability tracked under CVE-2014-6271 and it is less serious due
to the special, non-default system configuration that is needed to
create an exploitable situation.

To remove further exploitation potential we now limit the
function-in-environment variable to variables prefixed with BASH_FUNC_
. This hardening feature is work in progress and might be improved in
later updates.

Additionaly two more security issues were fixed in bash:
CVE-2014-7186: Nested HERE documents could lead to a crash of bash.

CVE-2014-7187: Nesting of for loops could lead to a crash of bash.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=898346");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=898603");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=898604");
  script_set_attribute(attribute:"see_also", value:"https://lists.opensuse.org/opensuse-updates/2014-09/msg00052.html");
  script_set_attribute(attribute:"solution", value:
"Update the affected bash packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Qmail SMTP Bash Environment Variable Injection (Shellshock)');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
  script_set_attribute(attribute:"in_the_news", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2014/09/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/09/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/09/29");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash-debuginfo-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash-lang");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash-loadables");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bash-loadables-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libreadline6");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libreadline6-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libreadline6-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libreadline6-debuginfo-32bit");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:readline-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:readline-devel-32bit");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:13.1");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2014-2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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 !~ "^(SUSE13\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "13.1", 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:"SUSE13.1", reference:"bash-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"bash-debuginfo-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"bash-debugsource-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"bash-devel-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"bash-lang-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"bash-loadables-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"bash-loadables-debuginfo-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"libreadline6-6.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"libreadline6-debuginfo-6.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", reference:"readline-devel-6.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", cpu:"x86_64", reference:"bash-debuginfo-32bit-4.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", cpu:"x86_64", reference:"libreadline6-32bit-6.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", cpu:"x86_64", reference:"libreadline6-debuginfo-32bit-6.2-68.8.1") ) flag++;
if ( rpm_check(release:"SUSE13.1", cpu:"x86_64", reference:"readline-devel-32bit-6.2-68.8.1") ) 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, "bash");
}