SUSE SLED12 / SLES12 Security Update : expat (SUSE-SU-2017:0424-1)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2017:0424-1.
# The text itself is copyright (C) SUSE.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(97080);
  script_version("3.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/06");

  script_cve_id("CVE-2012-0876", "CVE-2012-6702", "CVE-2016-5300");
  script_bugtraq_id(52379);

  script_name(english:"SUSE SLED12 / SLES12 Security Update : expat (SUSE-SU-2017:0424-1)");
  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 expat fixes the following security issues :

  - CVE-2012-6702: Expat, when used in a parser that has not
    called XML_SetHashSalt or passed it a seed of 0, made it
    easier for context-dependent attackers to defeat
    cryptographic protection mechanisms via vectors
    involving use of the srand function. (bsc#983215)

  - CVE-2016-5300: The XML parser in Expat did not use
    sufficient entropy for hash initialization, which
    allowed context-dependent attackers to cause a denial of
    service (CPU consumption) via crafted identifiers in an
    XML document. NOTE: this vulnerability exists because of
    an incomplete fix for CVE-2012-0876. (bsc#983216)

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=983215"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=983216"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2012-6702/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2016-5300/"
  );
  # https://www.suse.com/support/update/announcement/2017/suse-su-20170424-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?ac5ae257"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP2:zypper in -t
patch SUSE-SLE-SDK-12-SP2-2017-212=1

SUSE Linux Enterprise Software Development Kit 12-SP1:zypper in -t
patch SUSE-SLE-SDK-12-SP1-2017-212=1

SUSE Linux Enterprise Server for Raspberry Pi 12-SP2:zypper in -t
patch SUSE-SLE-RPI-12-SP2-2017-212=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2017-212=1

SUSE Linux Enterprise Server 12-SP1:zypper in -t patch
SUSE-SLE-SERVER-12-SP1-2017-212=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP2-2017-212=1

SUSE Linux Enterprise Desktop 12-SP1:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP1-2017-212=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/I:N/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:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:expat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:expat-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:expat-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libexpat1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libexpat1-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/07/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/02/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/02/09");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2021 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:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / 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:"^(1|2)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP1/2", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(1|2)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP1/2", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"1", reference:"expat-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"expat-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"expat-debugsource-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libexpat1-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libexpat1-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"expat-debuginfo-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libexpat1-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"1", reference:"libexpat1-debuginfo-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"expat-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"expat-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"expat-debugsource-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libexpat1-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libexpat1-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"expat-debuginfo-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libexpat1-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLES12", sp:"2", cpu:"x86_64", reference:"libexpat1-debuginfo-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"expat-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"expat-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"expat-debuginfo-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"expat-debugsource-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libexpat1-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libexpat1-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libexpat1-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libexpat1-debuginfo-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"expat-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"expat-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"expat-debuginfo-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"expat-debugsource-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libexpat1-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libexpat1-32bit-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libexpat1-debuginfo-2.1.0-20.2")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"libexpat1-debuginfo-32bit-2.1.0-20.2")) 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, "expat");
}