SUSE SLES12 Security Update : glibc (SUSE-SU-2020:0832-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2020:0832-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(135165);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/19");

  script_cve_id("CVE-2020-1751", "CVE-2020-1752", "CVE-2020-10029");

  script_name(english:"SUSE SLES12 Security Update : glibc (SUSE-SU-2020:0832-1)");

  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 glibc fixes the following issues :

CVE-2020-1752: Fixed a use after free in glob which could have allowed
a local attacker to create a specially crafted path that, when
processed by the glob function, could potentially have led to
arbitrary code execution (bsc#1167631).

CVE-2020-1751: Fixed an array overflow in backtrace for PowerPC
(bsc#1158996).

CVE-2020-10029: Fixed a stack-based buffer overflow during range
reduction (bsc#1165784).

Use 'posix_spawn' on popen preventing crash caused by 'subprocess'.
(bsc#1149332, BZ #22834)

Fix handling of needles crossing a page, preventing incorrect results
to return during the cross page boundary search. (bsc#1157893, BZ
#25226)

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=1149332");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1157893");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1158996");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1165784");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1167631");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-10029/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-1751/");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-1752/");
  # https://www.suse.com/support/update/announcement/2020/suse-su-20200832-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?11bf9386");
  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 Software Development Kit 12-SP5:zypper in -t
patch SUSE-SLE-SDK-12-SP5-2020-832=1

SUSE Linux Enterprise Software Development Kit 12-SP4:zypper in -t
patch SUSE-SLE-SDK-12-SP4-2020-832=1

SUSE Linux Enterprise Server 12-SP5:zypper in -t patch
SUSE-SLE-SERVER-12-SP5-2020-832=1

SUSE Linux Enterprise Server 12-SP4:zypper in -t patch
SUSE-SLE-SERVER-12-SP4-2020-832=1");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:P/I:P/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1751");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-1752");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-devel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-locale");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-locale-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:glibc-profile");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:nscd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:nscd-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"^(SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLES12", "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 == "SLES12" && (! preg(pattern:"^(4|5)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP4/5", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-debuginfo-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-debuginfo-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-debugsource-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-devel-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-devel-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-devel-debuginfo-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-devel-debuginfo-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-locale-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-locale-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-locale-debuginfo-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-locale-debuginfo-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-profile-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"glibc-profile-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"nscd-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"4", reference:"nscd-debuginfo-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-debuginfo-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-debuginfo-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-debugsource-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-devel-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-devel-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-devel-debuginfo-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-devel-debuginfo-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-locale-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-locale-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-locale-debuginfo-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-locale-debuginfo-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-profile-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"glibc-profile-32bit-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"nscd-2.22-100.21.5")) flag++;
if (rpm_check(release:"SLES12", sp:"5", reference:"nscd-debuginfo-2.22-100.21.5")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get());
  else security_warning(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "glibc");
}