SUSE SLED15 / SLES15 Security Update : freetds (SUSE-SU-2020:1417-2)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:1417-2.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(138263);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/13");

  script_cve_id("CVE-2019-13508");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : freetds (SUSE-SU-2020:1417-2)");
  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 freetds to 1.1.36 fixes the following issues :

Security issue fixed :

CVE-2019-13508: Fixed a heap overflow that could have been caused by
malicious servers sending UDT types over protocol version 5.0
(bsc#1141132).

Non-security issues fixed :

Enabled Kerberos support

Version update to 1.1.36 :

  - Default TDS protocol version is now 'auto'

  - Improved UTF-8 performances

  - TDS Pool Server is enabled

  - MARS support is enabled

  - NTLMv2 is enabled

  - See NEWS and ChangeLog for a complete list of changes

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=1141132"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2019-13508/"
  );
  # https://www.suse.com/support/update/announcement/2020/suse-su-20201417-2
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?88902a59"
  );
  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 Server Applications 15-SP2 :

zypper in -t patch
SUSE-SLE-Module-Server-Applications-15-SP2-2020-1417=1

SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2 :

zypper in -t patch
SUSE-SLE-Module-Packagehub-Subpackages-15-SP2-2020-1417=1

SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1 :

zypper in -t patch
SUSE-SLE-Module-Packagehub-Subpackages-15-SP1-2020-1417=1"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/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:H/I:H/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-2019-13508");
  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:freetds-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:freetds-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libct4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libct4-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libsybdb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libsybdb5-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/31");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/09");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020-2021 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:"^(1|2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES15 SP1/2", os_ver + " SP" + sp);
if (os_ver == "SLED15" && (! preg(pattern:"^(1|2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED15 SP1/2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES15", sp:"1", reference:"freetds-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"freetds-debugsource-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"libsybdb5-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"1", reference:"libsybdb5-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"freetds-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"freetds-debugsource-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"libct4-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"libct4-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"libsybdb5-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLES15", sp:"2", reference:"libsybdb5-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"freetds-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"freetds-debugsource-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"libsybdb5-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"1", reference:"libsybdb5-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"freetds-debuginfo-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"freetds-debugsource-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"libsybdb5-1.1.36-3.3.1")) flag++;
if (rpm_check(release:"SLED15", sp:"2", reference:"libsybdb5-debuginfo-1.1.36-3.3.1")) 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, "freetds");
}