AIX 7.2 TL 4 : bind (IJ33278)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The text in the description was extracted from AIX Security
# Advisory bind_advisory19.asc.
#

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

if (description)
{
  script_id(152152);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/21");

  script_cve_id("CVE-2021-25215");

  script_name(english:"AIX 7.2 TL 4 : bind (IJ33278)");

  script_set_attribute(attribute:"synopsis", value:
"The remote AIX host is missing a security patch.");
  script_set_attribute(attribute:"description", value:
"http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25215
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25215 ISC BIND
is vulnerable to a denial of service, caused by an assertion failure
while answering queries for DNAME records. By sending a query for
DNAME records, an attacker could exploit this vulnerability to trigger
a failed assertion check and terminate the named process.");
  script_set_attribute(attribute:"see_also", value:"https://aix.software.ibm.com/aix/efixes/security/bind_advisory19.asc");
  script_set_attribute(attribute:"solution", value:
"Install the appropriate interim fix.");
  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:"cvss_score_source", value:"CVE-2021-25215");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/07/29");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/07/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/30");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:ibm:aix:7.2");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2021-2025 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}



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

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if ( ! get_kb_item("Host/AIX/version") ) 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 iFix check is disabled because : "+get_kb_item("Host/AIX/emgr_failure") );

flag = 0;

if (aix_check_ifix(release:"7.2", ml:"04", sp:"02", patch:"IJ33278s4a", package:"bos.net.tcp.bind", minfilesetver:"7.2.4.0", maxfilesetver:"7.2.4.0") < 0) flag++;
if (aix_check_ifix(release:"7.2", ml:"04", sp:"03", patch:"IJ33278s4a", package:"bos.net.tcp.bind", minfilesetver:"7.2.4.0", maxfilesetver:"7.2.4.0") < 0) flag++;
if (aix_check_ifix(release:"7.2", ml:"04", sp:"04", patch:"IJ33278s4a", package:"bos.net.tcp.bind", minfilesetver:"7.2.4.0", maxfilesetver:"7.2.4.0") < 0) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:aix_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");