SUSE SLED12 / SLES12 Security Update : rsync (SUSE-SU-2018:0118-1)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2018:0118-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(106129);
  script_version("3.5");
  script_cvs_date("Date: 2019/09/10 13:51:46");

  script_cve_id("CVE-2017-16548", "CVE-2017-17433", "CVE-2017-17434");

  script_name(english:"SUSE SLED12 / SLES12 Security Update : rsync (SUSE-SU-2018:0118-1)");
  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 rsync fixes several issues. These security issues were
fixed :

  - CVE-2017-17434: The daemon in rsync did not check for
    fnamecmp filenames in the daemon_filter_list data
    structure (in the recv_files function in receiver.c) and
    also did not apply the sanitize_paths protection
    mechanism to pathnames found in 'xname follows' strings
    (in the read_ndx_and_attrs function in rsync.c), which
    allowed remote attackers to bypass intended access
    restrictions' (bsc#1071460).

  - CVE-2017-17433: The recv_files function in receiver.c in
    the daemon in rsync, proceeded with certain file
    metadata updates before checking for a filename in the
    daemon_filter_list data structure, which allowed remote
    attackers to bypass intended access restrictions
    (bsc#1071459).

  - CVE-2017-16548: The receive_xattr function in xattrs.c
    in rsync did not check for a trailing '\\0' character in
    an xattr name, which allowed remote attackers to cause a
    denial of service (heap-based buffer over-read and
    application crash) or possibly have unspecified other
    impact by sending crafted data to the daemon
    (bsc#1066644).

The update package also includes non-security fixes. See advisory for
details.

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=1028842"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1062063"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1066644"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1071459"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=1071460"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-16548/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17433/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2017-17434/"
  );
  # https://www.suse.com/support/update/announcement/2018/suse-su-20180118-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?2a548802"
  );
  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 Server for Raspberry Pi 12-SP2:zypper in -t
patch SUSE-SLE-RPI-12-SP2-2018-84=1

SUSE Linux Enterprise Server 12-SP3:zypper in -t patch
SUSE-SLE-SERVER-12-SP3-2018-84=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2018-84=1

SUSE Linux Enterprise Desktop 12-SP3:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP3-2018-84=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP2-2018-84=1

SUSE CaaS Platform ALL:zypper in -t patch SUSE-CAASP-ALL-2018-84=1

OpenStack Cloud Magnum Orchestration 7:zypper in -t patch
SUSE-OpenStack-Cloud-Magnum-Orchestration-7-2018-84=1

To bring your system up-to-date, use 'zypper patch'."
  );
  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:"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:rsync");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rsync-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:rsync-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/06");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/01/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2019 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:"^(2|3)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP2/3", os_ver + " SP" + sp);
if (os_ver == "SLED12" && (! preg(pattern:"^(2|3)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP2/3", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES12", sp:"3", reference:"rsync-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"rsync-debuginfo-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLES12", sp:"3", reference:"rsync-debugsource-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"rsync-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"rsync-debuginfo-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLES12", sp:"2", reference:"rsync-debugsource-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"rsync-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"rsync-debuginfo-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLED12", sp:"3", cpu:"x86_64", reference:"rsync-debugsource-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"rsync-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"rsync-debuginfo-3.1.0-13.7.1")) flag++;
if (rpm_check(release:"SLED12", sp:"2", cpu:"x86_64", reference:"rsync-debugsource-3.1.0-13.7.1")) 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, "rsync");
}