SUSE SLED15 / SLES15 Security Update : libgcrypt (SUSE-SU-2019:1859-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2019:1859-1.
# The text itself is copyright (C) SUSE.
#

include('compat.inc');

if (description)
{
  script_id(126770);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/09");

  script_cve_id("CVE-2019-12904");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : libgcrypt (SUSE-SU-2019:1859-1)");

  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 libgcrypt fixes the following issues :

Security issues fixed :

CVE-2019-12904: The C implementation of AES is vulnerable to a
flush-and-reload side-channel attack because physical addresses are
available to other processes. (The C implementation is used on
platforms where an assembly-language implementation is unavailable.)
(bsc#1138939)

Other bugfixes: Don't run full FIPS self-tests from constructor
(bsc#1097073)

Skip all the self-tests except for binary integrity when called from
the constructor (bsc#1097073)

Enforce the minimal RSA keygen size in fips mode (bsc#1125740)

avoid executing some tests twice.

Fixed a race condition in initialization.

Fixed env-script-interpreter in cavs_driver.pl

Fixed redundant fips tests in some situations causing failure to boot
in fips mode. (bsc#1097073)

This helps during booting of the system in FIPS mode with insufficient
entropy.

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=1097073");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1125740");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/show_bug.cgi?id=1138939");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2019-12904/");
  # https://www.suse.com/support/update/announcement/2019/suse-su-20191859-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?20388b12");
  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 Open Buildservice Development Tools
15:zypper in -t patch
SUSE-SLE-Module-Development-Tools-OBS-15-2019-1859=1

SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch
SUSE-SLE-Module-Basesystem-15-2019-1859=1");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-12904");

  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:"2019/06/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/07/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt-cavs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt-cavs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt-devel-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt20");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt20-32bit-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt20-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgcrypt20-hmac");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  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) 2019-2024 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:"^(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", cpu:"x86_64", reference:"libgcrypt20-32bit-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"libgcrypt20-32bit-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", cpu:"x86_64", reference:"libgcrypt20-hmac-32bit-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt-cavs-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt-cavs-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt-debugsource-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt-devel-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt-devel-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt20-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt20-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLES15", sp:"0", reference:"libgcrypt20-hmac-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"libgcrypt20-32bit-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"libgcrypt20-32bit-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", cpu:"x86_64", reference:"libgcrypt20-hmac-32bit-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt-cavs-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt-cavs-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt-debugsource-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt-devel-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt-devel-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt20-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt20-debuginfo-1.8.2-6.17.1")) flag++;
if (rpm_check(release:"SLED15", sp:"0", reference:"libgcrypt20-hmac-1.8.2-6.17.1")) 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, "libgcrypt");
}