AIX OpenSSL Advisory : openssl_advisory23.asc

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(107230);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/04/21");

  script_cve_id("CVE-2017-3731");
  script_bugtraq_id(95813);

  script_name(english:"AIX OpenSSL Advisory : openssl_advisory23.asc");
  script_summary(english:"Checks the version of the OpenSSL packages and iFixes.");

  script_set_attribute(attribute:"synopsis", value:
"The remote AIX host has a version of OpenSSL installed that is
affected by a denial of service vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of OpenSSL installed on the remote AIX host is affected by
a denial of service vulnerability in OpenSSL caused by an
out-of-bounds read when using a specific cipher. By sending specially
crafted truncated packets, a remote attacker could exploit this
vulnerability using CHACHA20/POLY1305 to cause an application crash.");
  script_set_attribute(attribute:"see_also", value:"https://aix.software.ibm.com/aix/efixes/security/openssl_advisory23.asc");
  script_set_attribute(attribute:"solution", value:
"A fix is available and can be downloaded from the IBM AIX website.");
  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_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:U/RL:O/RC:C");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/02/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:ibm:aix");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:openssl:openssl");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2018-2023 Tenable Network Security, Inc.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/AIX/lslpp", "Host/local_checks_enabled", "Host/AIX/version");

  exit(0);
}

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

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
oslevel = get_kb_item("Host/AIX/version");
if (isnull(oslevel)) audit(AUDIT_OS_NOT, "AIX");

if ( ! get_kb_item("Host/AIX/lslpp") ) audit(AUDIT_PACKAGE_LIST_MISSING);

if ( get_kb_item("Host/AIX/emgr_failure" ) ) exit(0, "This AIX package check is disabled because : "+get_kb_item("Host/AIX/emgr_failure") );

oslevel = oslevel - "AIX-";

if ( oslevel != "5.3" && oslevel != "6.1" && oslevel != "7.1" && oslevel != "7.2")
{
  audit(AUDIT_OS_NOT, "AIX 5.3 / 6.1 / 7.1 / 7.2", "AIX " + oslevel);
}

flag = 0;
package = "openssl.base";

# 1.0.2.1000
if (aix_check_ifix(release:"5.3", patch:"(102j_ifix)", package:package, minfilesetver:"1.0.2.500", maxfilesetver:"1.0.2.1000") < 0) flag++;
if (aix_check_ifix(release:"6.1", patch:"(102j_ifix)", package:package, minfilesetver:"1.0.2.500", maxfilesetver:"1.0.2.1000") < 0) flag++;
if (aix_check_ifix(release:"7.1", patch:"(102j_ifix)", package:package, minfilesetver:"1.0.2.500", maxfilesetver:"1.0.2.1000") < 0) flag++;
if (aix_check_ifix(release:"7.2", patch:"(102j_ifix)", package:package, minfilesetver:"1.0.2.500", maxfilesetver:"1.0.2.1000") < 0) flag++;

# 20.13.102.1000
if (aix_check_ifix(release:"5.3", patch:"(fips_102j)", package:package, minfilesetver:"20.13.102.1000", maxfilesetver:"20.13.102.1000") < 0) flag++;
if (aix_check_ifix(release:"6.1", patch:"(fips_102j)", package:package, minfilesetver:"20.13.102.1000", maxfilesetver:"20.13.102.1000") < 0) flag++;
if (aix_check_ifix(release:"7.1", patch:"(fips_102j)", package:package, minfilesetver:"20.13.102.1000", maxfilesetver:"20.13.102.1000") < 0) flag++;
if (aix_check_ifix(release:"7.2", patch:"(fips_102j)", package:package, minfilesetver:"20.13.102.1000", maxfilesetver:"20.13.102.1000") < 0) flag++;

if (flag)
{
  aix_report_extra = ereg_replace(string:aix_report_get(), pattern:"[()]", replace:"");
  aix_report_extra = ereg_replace(string:aix_report_extra, pattern:"[|]", replace:" or ");
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : aix_report_extra
  );
}
else
{
  tested = aix_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, package);
}