Oracle Solaris Third-Party Patch Update : telnet (cve_2011_4862_buffer_overflow)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from the Oracle Third Party software advisories.
#
include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(80781);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2011-4862");

  script_name(english:"Oracle Solaris Third-Party Patch Update : telnet (cve_2011_4862_buffer_overflow)");
  script_summary(english:"Check for the 'entire' version.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Solaris system is missing a security patch for third-party
software."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote Solaris system is missing necessary patches to address
security updates :

  - Buffer overflow in libtelnet/encrypt.c in telnetd in
    FreeBSD 7.3 through 9.0, MIT Kerberos Version 5
    Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal
    1.5.1 and earlier, GNU inetutils, and possibly other
    products allows remote attackers to execute arbitrary
    code via a long encryption key, as exploited in the wild
    in December 2011. (CVE-2011-4862)"
  );
  # https://www.oracle.com/technetwork/topics/security/thirdparty-patch-map-1482893.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4a913f44"
  );
  # https://blogs.oracle.com/sunsecurity/cve-2011-4862-buffer-overflow-vulnerability-in-telnet
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4e4b6f56"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade to Solaris 11/11 SRU 04.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  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:"exploithub_sku", value:"EH-11-760");
  script_set_attribute(attribute:"exploit_framework_exploithub", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Linux BSD-derived Telnet Service Encryption Key ID Buffer Overflow');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:solaris:11.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:solaris:telnet");

  script_set_attribute(attribute:"patch_publication_date", value:"2012/04/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/01/19");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Solaris Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Solaris11/release", "Host/Solaris11/pkg-list");

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Solaris11/release");
if (isnull(release)) audit(AUDIT_OS_NOT, "Solaris11");
pkg_list = solaris_pkg_list_leaves();
if (isnull (pkg_list)) audit(AUDIT_PACKAGE_LIST_MISSING, "Solaris pkg-list packages");

if (empty_or_null(egrep(string:pkg_list, pattern:"^telnet$"))) audit(AUDIT_PACKAGE_NOT_INSTALLED, "telnet");

flag = 0;

if (solaris_check_release(release:"0.5.11-0.175.0.4.0.5.0", sru:"SRU 4") > 0) flag++;

if (flag)
{
  error_extra = 'Affected package : telnet\n' + solaris_get_report2();
  error_extra = ereg_replace(pattern:"version", replace:"OS version", string:error_extra);
  if (report_verbosity > 0) security_hole(port:0, extra:error_extra);
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_PACKAGE_NOT_AFFECTED, "telnet");