SUSE SLED15 / SLES15 Security Update : mgetty (SUSE-SU-2018:2894-1)

2019-01-02T00:00:00
ID SUSE_SU-2018-2894-1.NASL
Type nessus
Reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2019-01-02T00:00:00

Description

This update for mgetty fixes the following issues :

CVE-2018-16741: The function do_activate() did not properly sanitize shell metacharacters to prevent command injection (bsc#1108752).

CVE-2018-16745: The mail_to parameter was not sanitized, leading to a buffer overflow if long untrusted input reached it (bsc#1108756).

CVE-2018-16744: The mail_to parameter was not sanitized, leading to command injection if untrusted input reached reach it (bsc#1108757).

CVE-2018-16742: Prevent stack-based buffer overflow that could have been triggered via a command-line parameter (bsc#1108762).

CVE-2018-16743: The command-line parameter username wsa passed unsanitized to strcpy(), which could have caused a stack-based buffer overflow (bsc#1108761).

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:2894-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(120111);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/16");

  script_cve_id("CVE-2018-16741", "CVE-2018-16742", "CVE-2018-16743", "CVE-2018-16744", "CVE-2018-16745");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : mgetty (SUSE-SU-2018:2894-1)");
  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 update for mgetty fixes the following issues :

CVE-2018-16741: The function do_activate() did not properly sanitize
shell metacharacters to prevent command injection (bsc#1108752).

CVE-2018-16745: The mail_to parameter was not sanitized, leading to a
buffer overflow if long untrusted input reached it (bsc#1108756).

CVE-2018-16744: The mail_to parameter was not sanitized, leading to
command injection if untrusted input reached reach it (bsc#1108757).

CVE-2018-16742: Prevent stack-based buffer overflow that could have
been triggered via a command-line parameter (bsc#1108762).

CVE-2018-16743: The command-line parameter username wsa passed
unsanitized to strcpy(), which could have caused a stack-based buffer
overflow (bsc#1108761).

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=1108752"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1108756"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1108757"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1108761"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1108762"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-16741/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-16742/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-16743/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-16744/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2018-16745/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20182894-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?e99dd61d"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use the SUSE recommended
installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch
SUSE-SLE-Module-Basesystem-15-2018-2054=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:g3utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:g3utils-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:mgetty");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:mgetty-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:mgetty-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/09/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/09/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2019-2020 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:"^(SLED15|SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED15 / SLES15", "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 == "SLES15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP0", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(0)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP0", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"0", reference:"g3utils-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"g3utils-debuginfo-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"mgetty-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"mgetty-debuginfo-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"mgetty-debugsource-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"g3utils-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"g3utils-debuginfo-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"mgetty-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"mgetty-debuginfo-1.1.37-3.3.2")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"mgetty-debugsource-1.1.37-3.3.2")) 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, "mgetty");
}